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The Following brands are available based on your search.

  • Bosal
    Bosal
  • DEC
    DEC
  • Davico Converters
    Davico Converters
  • Eastern Catalytic
    Eastern Catalytic
  • MagnaFlow Performance Exhaust
    MagnaFlow Performance Exhaust
  • Magnaflow
    Magnaflow
  • Walker
    Walker

Best Selling Genuine Bmw Catalytic Converters

  • We Stock the following top leading brands, including Magnaflow, Bosal, Eastern Catalytic, Walker
  • Constantly Updated Inventory of Bmw Replacement Catalytic Converter Parts

We stock Catalytic Converter parts for most Bmw models, including 318i, 318is, 318ti, 320i, 323i, 325i, 325is, 325Ci, 328i, 328i xDrive, 328is, 328xi, 330i, 330xi, 335i, 335xi, 525i, 525xi, 528i, 530i, 530xi, 535i, 535i xDrive, 540i, 545i, 635CSi, 645Ci, 650i, 740i, 740iL, 745Li, 745i, 750iL, M3, M5, M6, X3, X5, Z3, Z4.

Magnaflow
Qty:
$91.25
Magnaflow Catalytic Converter
  • Universal Catalytic Converter - 2.00in.
  • Cutting and welding required during installation
  • Universal Standard Grade Federal (Excludes CA)
  • Product Attributes:
    • Body Length: 13.375
    • Body Shape: Oval
    • Body Type: Clam Shell
    • Body Width: 6.375
    • Overall Length: 17.375
    • Series: Standard Grade
    • Substrate Material: Ceramic
    • Title: Universal Converter
Brand: Magnaflow
Additional Fitment Information:
Vehicle Block Engine CID CC
1992 - BMW 735iL L 6 Cyl 3.5L - 3430
Magnaflow
Qty:
$91.25
Magnaflow Catalytic Converter
  • Universal Catalytic Converter - 2.00in.
  • Cutting and welding required during installation Split Date From: From 03/1987
  • Universal Standard Grade Federal (Excludes CA)
  • Product Attributes:
    • Body Length: 13.375
    • Body Shape: Oval
    • Body Type: Clam Shell
    • Body Width: 6.375
    • Overall Length: 17.375
    • Series: Standard Grade
    • Substrate Material: Ceramic
    • Title: Universal Converter
Brand: Magnaflow
Additional Fitment Information:
Vehicle Block Engine CID CC
1988 - BMW 528e L 6 Cyl 2.7L - 2693
Magnaflow
Qty:
$91.25
Magnaflow Catalytic Converter
  • Universal Catalytic Converter - 2.00in.
  • Cutting and welding required during installation Split Date From: From 08/1987
  • Universal Standard Grade Federal (Excludes CA)
  • Product Attributes:
    • Body Length: 13.375
    • Body Shape: Oval
    • Body Type: Clam Shell
    • Body Width: 6.375
    • Overall Length: 17.375
    • Series: Standard Grade
    • Substrate Material: Ceramic
    • Title: Universal Converter
Brand: Magnaflow
Additional Fitment Information:
Vehicle Block Engine CID CC
1988 - BMW 635CSi L 6 Cyl 3.5L - 3430
Bosal
Qty:
$422.60
Bosal Catalytic Converter
  • BMW 328I 96-98 $O/S$
  • Bosal Federal Direct-Fit Standard Load OBDII Catalytic Converter
Brand: Bosal
Additional Fitment Information:
Vehicle Block Engine CID CC
1996 - BMW M3 L 6 Cyl 3.2L - 3152
Eastern Catalytic
1987 BMW 325es Catalytic Converter 6 Cyl 2.7L Eastern Catalytic - UNIVERSAL

P311-0368AFA    70316  New

Qty:
$50.29
Eastern Catalytic Catalytic Converter
  • Federal / EPA Semi-Universal Converter - Standard
  • Undercar Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Standard
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • O2 Sensor Ports: None
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Shape: Oval
    • Test Weight: 5.9 / 6000
  • Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology also helps to maintain industry-leading efficiency, productivity, and competitive prices. The proprietary NANO substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency.
Brand: Eastern Catalytic
Additional Fitment Information:
Vehicle Block Engine CID CC
1987 - BMW 325es L 6 Cyl 2.7L - 2693
Eastern Catalytic
2003 BMW X5 Catalytic Converter - Left 8 Cyl 4.4L Eastern Catalytic - UNIVERSAL

P311-483252B    82724  New

Qty:
$73.94
Eastern Catalytic Catalytic Converter  Left
  • Federal / EPA Semi-Universal Converter - ECO II
  • Undercar Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Eco Ii
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Test Weight: 5.9 / 6000
  • Proprietary ECO II NANO substrate chemistry is designed to be effective on most complex or second-generation on board diagnostics (OBD II) systems and yields highly efficient loadings for lower cost and better converter efficiency. Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology helps to maintain industry-leading efficiency, productivity, and competitive prices.
Brand: Eastern Catalytic
Position: Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2003 - BMW X5 Left V 8 Cyl 4.4L - 4398
Eastern Catalytic
Qty:
$73.94
Eastern Catalytic Catalytic Converter  Front
  • Federal / EPA Semi-Universal Converter - ECO II
  • Undercar Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Eco Ii
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Test Weight: 5.9 / 6000
  • Proprietary ECO II NANO substrate chemistry is designed to be effective on most complex or second-generation on board diagnostics (OBD II) systems and yields highly efficient loadings for lower cost and better converter efficiency. Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology helps to maintain industry-leading efficiency, productivity, and competitive prices.
Brand: Eastern Catalytic
Position: Front
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1998 - BMW 328is Front L 6 Cyl 2.8L - 2793
Eastern Catalytic
1999 BMW 318ti Catalytic Converter 4 Cyl 1.9L Eastern Catalytic - UNIVERSAL

P311-2DB4F7C    83174  New

Qty:
$74.79
Eastern Catalytic Catalytic Converter
  • Federal / EPA Semi-Universal Converter - ECO II
  • Undercar Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 12"
    • Catalyst Type: Eco Ii
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • O2 Sensor Ports: None
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Shape: Oval
    • Test Weight: 5.9 / 6000
  • Proprietary ECO II NANO substrate chemistry is designed to be effective on most complex or second-generation on board diagnostics (OBD II) systems and yields highly efficient loadings for lower cost and better converter efficiency. Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology helps to maintain industry-leading efficiency, productivity, and competitive prices.
Brand: Eastern Catalytic
Additional Fitment Information:
Vehicle Block Engine CID CC
1999 - BMW 318ti L 4 Cyl 1.9L - 1895
Eastern Catalytic
1987 BMW 528e Catalytic Converter 6 Cyl 2.7L Eastern Catalytic - UNIVERSAL

P311-0368AFA    70316  New

Qty:
$50.29
Eastern Catalytic Catalytic Converter
  • Federal / EPA Semi-Universal Converter - Standard
  • Undercar; To 3/87 Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Standard
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • O2 Sensor Ports: None
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Shape: Oval
    • Test Weight: 5.9 / 6000
  • Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology also helps to maintain industry-leading efficiency, productivity, and competitive prices. The proprietary NANO substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency.
Brand: Eastern Catalytic
Additional Fitment Information:
Vehicle Block Engine CID CC
1987 - BMW 528e L 6 Cyl 2.7L - 2693
Eastern Catalytic
Qty:
$50.29
Eastern Catalytic Catalytic Converter  Front Right
  • Federal / EPA Semi-Universal Converter - Standard
  • Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Standard
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.50" Id
    • O2 Sensor Ports: None
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.50" Id
    • Shape: Oval
    • Test Weight: 5.9 / 6000
  • Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology also helps to maintain industry-leading efficiency, productivity, and competitive prices. The proprietary NANO substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency.
Brand: Eastern Catalytic
Position: Front Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1994 - BMW 750iL Front Right V 12 Cyl 5.0L - 4988
Eastern Catalytic
2003 BMW X5 Catalytic Converter - Right 8 Cyl 4.4L Eastern Catalytic - UNIVERSAL

P311-483252B    82724  New

Qty:
$73.94
Eastern Catalytic Catalytic Converter  Right
  • Federal / EPA Semi-Universal Converter - ECO II
  • Undercar Legal Note: Not For Sale or Use in the state of CA/NY & Maine (vehicles with California Emissions)
  • UNIVERSAL
  • Product Attributes:
    • Air Tube Qty: None
    • Body Length (IN): 10"
    • Catalyst Type: Eco Ii
    • Inlet Gasket Qty: None
    • Inlet Hardware: None
    • Inlet Type A: 2.00" Id
    • Outlet Gasket Qty: None
    • Outlet Hardware: None
    • Outlet Type A: 2.00" Id
    • Test Weight: 5.9 / 6000
  • Proprietary ECO II NANO substrate chemistry is designed to be effective on most complex or second-generation on board diagnostics (OBD II) systems and yields highly efficient loadings for lower cost and better converter efficiency. Latest advanced-manufacturing technology, including automated workstations, spinner welding equipment, and high-speed production lines ensures that all converters are built to exact OE dimensions and fitment. This technology helps to maintain industry-leading efficiency, productivity, and competitive prices.
Brand: Eastern Catalytic
Position: Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2003 - BMW X5 Right V 8 Cyl 4.4L - 4398
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.000
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2015
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1993
    • Most Popular Make / Model: Toyota Corolla
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.000
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 13861319
Brand: Walker
Position: Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1997 - BMW 528i Left L 6 Cyl 2.8L - 2793
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.000
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2015
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1993
    • Most Popular Make / Model: Toyota Corolla
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.000
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 13861319
Brand: Walker
Position: Rear
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1998 - BMW 328is Rear L 6 Cyl 2.8L - 2793
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.000
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2015
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1993
    • Most Popular Make / Model: Toyota Corolla
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.000
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 13861319
Brand: Walker
Position: Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1998 - BMW 528i Right L 6 Cyl 2.8L - 2793
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Position: Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1996 - BMW 850Ci Left V 12 Cyl 5.4L - 5379
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Additional Fitment Information:
Vehicle Block Engine CID CC
1999 - BMW 328is L 6 Cyl 2.8L - 2793
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Position: Rear
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2000 - BMW 328i Rear L 6 Cyl 2.8L - 2793
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Position: Rear Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2013 - BMW 328i xDrive Rear Left L 6 Cyl 3.0L - 2996
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Position: Rear Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2013 - BMW 328i xDrive Rear Right L 6 Cyl 3.0L - 2996
Walker
Qty:
$112.13
  • Fits Fed. & Calif. Emiss. Models.; Modifications and/or Additional Parts Required.
  • Walker EPA Ultra Universal Converter
  • Product Attributes:
    • Air Tube: No
    • Body Height: 4.500
    • Body Length: 8.000
    • Body Shape: Round
    • Body Width: 4.375
    • Fitment: Universal
    • Inlet Connection Type: Pipe Connection
    • Inlet Diameter 1: 2.250
    • Inlet Diameter Designation: Inside Diameter
    • Max Year Covered: 2016
    • Maximum Engine Size: 5.9l
    • Maximum Test Weight: 8500
    • Min Year Covered: 1995
    • Most Popular Make / Model: Toyota Camry
    • Most Popular Year: 2007
    • Outlet Connection Type: Pipe Connection
    • Outlet Diameter 1: 2.250
    • Outlet Diameter Designation: Inside Diameter
    • Overall Length: 11.500
    • Product Grade: Economy
    • Substrate Material: Ceramic
    • Total Part VIO: 21750274
Brand: Walker
Position: Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1996 - BMW 850Ci Right V 12 Cyl 5.4L - 5379

Latest Bmw Repair and Catalytic Converter Installation Advice

CarJunky AutoAdvice

NJ Motor Vehicle inspection follow up....

Showing 2 out of 12 Posts | Show 10 Hidden Posts
Question From carminejg3 on NJ Motor Vehicle inspection follow up....

Well I replaced the brake light, and had the window clip fixed as well as the front struts replaced. ($700 for both struts, some sleeve and a little weight looking thing that protects the strut from a sudden upward motion)

But as we may have guessed I still failed the emissions test results:
My emissions test results below:

Gas Standard Reading
NOx 970 1624 Failed
HC 128 148 Failed
CO% .71 .49 Pass
CO2% 14.4
O2% 0.4


Before I failed with a NOx reading of 1970 and a HC reading of 179

I changed the spark plugs, and air filter as well as went back to running 93 octane gas (like I'm suppose to be) see note at bottom.

So What do you guys think I should change next? The Oxygen Sensor (o2).... I changed this the last time and the car did pass...
I'm wondering if changing the gas octane could ruin an o2 sensor, or could my car be doing something that is burning out the oxygen sensor?

Any suggestions would be great!!




Gasoline NOTE: Run what the car Manufactors suggest.... It goes WAY beyond the price... 87 octane burns a lot faster, then 93 Octane and your car is designed to fire at a certain point, so the other octane will make it fire early or late....

Funny to note by changing back to 93 octane gasoline..... I gained another 30 mphs....

Response From TekDiva


I joined the site to make this post! LOL. Looks like a great forum though...

Do you know that, in NJ, if you have spent $450 trying to repair the failed emissions you can ask for a special waiver? You need to bring the original invoices and they must be from a liscensed EMF. It's good for 2 years and can be re-issued if applicable.

Hope that helps...

TekDiva

Response From carminejg3

Thanks a lot.

I think this site makes you register to help keep it clean, besides it was fairly simply to register right.

I actually just bought another o2 sensor since I had High NOx and HC.

That back fired on me.

The NOx and HC went up from.

Gas Standard Reading
NOx 970 1624 Failed
HC 128 148 Failed

to:
Gas Standard Reading
NOx 970 2150 Failed
128 250 Failed

Now I'm thinking is it my catalytic converter again (2 years old) or is my car just a piece of crap lol.

Response From Tom Greenleaf

I wish I knew more about the emmisions systems. The octane of fuel shouldn't matter if the car was designed for 87 octane. Have one of my own that fails by the slightest amount of Nox, and I put in a new EGR and things that should help and it tested worse by a smidge. It's a 1989 Town Car and this state still want's it to blow fresh air and it wasn't even designed for that so I'm ticked. That car now has 209,000 miles and is rusting badly so it's now on its last sticker.

Your converter should last longer than two years but if it's been taxed too much it could have given up.

If this car runs well it should be just some stupid problem like intake vacuum or any vacuum leaks. Take it out safely for a good beating -- meaning foot to the floor several times especially if the normal driving is just poking around as mine are.

Your #s are pretty high so there is something wrong and it is costing you fuel economy too.

I've heard isopropyl dry gas can help some but probably not as much as you need.

You can test for vacuum leaks with brakecleaner or carb/throttle body cleaner but some if flammable and on a hot engine a bit dangerous so if you try that have a real ABC fire extinguisher handy as some of these can flash with a hot engine. Engine idle should not change when using this trick on a vacuum suspect leak. Use sparingly if you try that, T

Response From carminejg3 Top Rated Answer

Latest I changed the O2 Sensor, and my results shot up to

NOx 2254 (need 970)
HC 250 (need 128)

Do I need a new catalytic converter? Or what does an ERG system control and how could you check it out in a 92 325i bmw

Response From Tom Greenleaf

The EGR (Exhaust Gas Recirculation) is there to put a bit of already burned gas back into the intake but only at part throttle. It should be off at idle and off at full throttle. For some reason the tidbit it puts into fresh fuel and air lowers the combustion temp which lowers NOx. A colder engine will have less NOx but have higher HC.

The EGR was never meant to just reburn any unburned fuel as first thought by many.

A new Cat Converter would help but I'm not sure that would be enough.

Do you have a vacuum gauge? If not get one that makes vaccuum with a gauge and a peice of howe and a "T" that fits the hose for some testing.

Manifold vacuum should be about 18Hg at idle and the same without load at about 2,000 or it's indicating an exhaust restiction!

Also -- Is ignition timing correct? That could throw things off too, Just the thoughts du jour, T

Response From carminejg3

Hey Tom,

I recently noticed that once in a while my car is now giving a little backfire, not the loud boom, but you can hear a backfire after stepping on the gas and then coasting with the car still in gear

Response From Tom Greenleaf

What kind of car is this and how many miles? If it uses a timing belt and it's overdue it may have jumped a tooth, T

Response From carminejg3

tom its a 92 bmw 325i... with 215,000 miles.

Response From Tom Greenleaf

?? I guess check the timing and see if it jumps around too much but doubt that for a Beamer and that could mean a worn distributor, T

Response From TekDiva


I really feel for ya ....

I'm just starting down this road right now- trying to save my beloved beater 87 manual trans bronco. I think it will be quite a "trip" ...

Personally, I'm really relieved to know that I'm not "into" the emissions for more than $450. I don't care what the critics say, I just really love this car and really want to save it. Call me a silly mach-a dork!

lol

TekDiva

Response From carminejg3

Yeah I know the feeling.... I already spent 700 on struts, so I'm going to try and replace the catalytic. And see what happens from there.

Or I'll do what everyone else seems to be doing in NJ, registering my car in a different state for cheap insurance and less straight motor vehicle test.

Lincoln LS6 engine power loss

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Question From rhamaker on Lincoln LS6 engine power loss

OK, I am posting here hoping that someone has had this issue before, as I am stumped. I have an 05 Lincoln LS6 that i am working on currently. The car cranks up fine and idles pretty well. When I put it in gear, the engine physically shakes back and fourth and the idle becomes very choppy and sputters, but doesn't die. I can drive the car down the road and it seems the farther i get the worse it drives, but it never dies. The idle gets worse and it has no power at all, almost like it is being choked out. My initial instinct was a clogged catalytic converter, but once I get the car back home and put it in park, it goes back to a pretty smooth idle. I am thinking also that if it was a cat, the car would throw a code. That is the oddest part about it, is I have no engine error codes. I even put an OBD2 reader on it yesterday just to make sure it was clean and the computer thinks it is OK. I dont know if that car has a MAF and a MAP sensor or not, or whether that could even be an issue, but if anyone out there has seen this or can shed light on where to go please let me know. I am stumped at this point, and without a diagnostic code to go off of I am flying blind. I have checked the oil and water and have no bleed over that I can tell so I am fairly confident it isn't a head or gasket problem. I haven't done a compression test to rule it out though. I had thought maybe fuel pump but dont really know a way to test fuel pressure under load, and didnt think it made sense for it to get worse only as more load got put on the engine. It seems as though it is an intake issue, but the throttle body is new on the car and other than the sensors i am not sure what to look at.

Response From Discretesignals

LS6? Do you mean LS with the 6 cylinder?

Those are bad for coil problems. When you put the engine underload that puts more load on the ignition coils. If you have a weak coil, it will cause a miss and the engine will buck and have loss of power. You can do one of two things. If you know someone that has a high end scan tool that shows mode $06 information you can look at the misfire CIDs and see which cylinders are counting up. If the miss is bad enough, you can unplug each coil one at a time while the engine is running and skipping. The cylinder that doesn't change the running of the engine is the suspected cylinder that is missing. From there you either have a bad coil or some other problem. You can swap coils and see if the miss moves to another cylinder. If it moves, the coil is the culprit.

Its not unusual to have more coil problems later on down the road if you find you have a bad coil. Sometimes it is best to replace all the coils if you find one that is bad because when one goes bad the others aren't far behind.

Response From rhamaker Top Rated Answer

Yes, it is the LS with the V6. My apologies for not mentioning that.

OK, I will start looking more towards ignition problems then. I know dealing with European cars, when they are misfiring they throw codes. I had the exact same issue from a 325 BMW I was working on recently but it was producing a misfire code and even gave the cylinder number. Something else i didnt mention earlier and should have, the exhaust is very potent. It doesnt smell rich, just very strong.

Response From Hammer Time

It doesnt smell rich, just very strong.

What's the difference?

Response From rhamaker

It doesn't smell like gas

Response From Hammer Time

Neither does a rich mixture.

Response From rhamaker

Ok well then let me restate, the car has a strong exhaust smell. I will try changing the coil packs and see if that helps.

Response From Hammer Time

The dartboard method of just throwing parts at it until something works will only serve to empty your wallet. You could have it professionally diagnosed for the price of one coil.

Response From rhamaker

The point of trying to get some professional opinions was to not take it to the shop for a professional diagnosis. If that was the route i wanted to take i would not have wasted my time posting here. The price of one coil pack is $36 for this particular engine which is no where near what a professional diagnosis would be. I have worked on engines quite a bit in the past with fairly decent success, but this is the first time I have encountered this problem. I would appreciate if anyone had any helpful advice such as Discretesignals had in his post. The barrage of telling me to take it for professional diagnosis doesnt help me learn the problem, or further my knowledge of diagnosing cars.

Response From Hammer Time

We are not there to run tests on your car to isolate issues and you apparently are intent on throwing parts at it so you don't have a lot of options. You already stated you were planning on changing all the coils, even if you edited that statement out. 6 coils @ $36 each is $216. My shop get $44 for a diagnostic so which one is cheaper, especially since you may still be in the same boat after changing the coils.

Response From Hammer Time

This wouldn't really be a hard thing for an experienced tech to figure out with the help of a professional scan tool but I can tell you that just about every suggestion you have made would be wrong for the symptoms you are describing. I suggest you enlist some professional help with this. I mean one that actually gets to look at the car.