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The Following brands are available based on your search.

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    True Tech

Best Selling Genuine Oldsmobile EGR valves

  • We Stock the following top leading brands, including Delphi, Standard Ignition, True Tech, ACDelco
  • Constantly Updated Inventory of Oldsmobile Replacement EGR Valve Parts
Delphi
2000 Oldsmobile Bravada EGR Valve Delphi

P311-0BD928A    EG10026  New

EGV589T , 17113618 , 8170963090 , 8-25180-481-0 , 1302042 , 8-17113-303-0 , 1302067 , 17204035 , EGR1273 , 2141038 , 12576918 , 1302057 , 4F1139 , 8-17096-309-0 , 17113806 , 130-2042 , 12568582 , 10516 , 8-17113-405-0 , 17113303 , 8251804810 , 8171134050 , 8125769180 , FE3233 , 2M1 , 2145070 , EGV606 , EGR1043 , 17113615 , 17114583 , 4F1088 , 130-2067 , 130-2104 , 17096309 , EGR1067 , 226154 , 2141043 , EGV589 , 17113619 , 8-12576-918-0 , 8171133030 , 2141080 , 2141042 , 2141065 , 1302100 , 130-2100 , 1302104 , 17113405 , 130-2057 , 2145071

Qty:
$128.77
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle
2000 - Oldsmobile Bravada
Delphi
1996 Oldsmobile Achieva EGR Valve 4 Cyl 2.4L Delphi

P311-4CEEB20    EG10020  New

17200254 , 8170963060 , EGR1329 , 17115346 , 10518 , 8125780360 , EGR1272 , 8-17096-306-0 , 17096306 , EGV543 , 17113712 , 2145060 , FE3232 , 12578036 , 226208 , 4F1031 , 8-12578-036-0 , EGR1024

Qty:
$148.99
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle Submodel Engine VIN Block Engine CID CC
1996 - Oldsmobile Achieva S T L 4 Cyl 2.4L 146 2392
Delphi
1999 Oldsmobile Alero EGR Valve 6 Cyl 3.4L Delphi

P311-4F15B69    EG10022  New

EGV468 , 2145061 , FE3207 , EGV468T , 17113285 , 1302040 , 130-2040 , 12578041 , 10515 , EGR1029 , 226130 , 1M7 , 17115366 , 17200264 , EGR1246 , 2141083 , EGR1246P

Qty:
$137.34
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle Engine VIN Block Engine CID CC
1999 - Oldsmobile Alero E V 6 Cyl 3.4L 207 -
Delphi
1996 Oldsmobile LSS EGR Valve Delphi

P311-1B3DA3E    EG10169  New

EGR1030 , 130-509 , 17200279 , 1302102 , 12578034 , 10510 , EGR1046 , 2141033 , 226002 , 17113643 , FE3055 , 17114578 , 130-2102 , 10520 , 17114574 , 2145051 , EGR1095 , EGV466T , EGR1151 , 2145067 , 4F1054 , 12570094 , EGV466 , 17095163 , 1M6 , 17113617 , 17096199 , 130509 , 17113284

Qty:
$108.21
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle Aspiration Engine VIN
1996 - Oldsmobile LSS Supercharged 1
Delphi
1995 Oldsmobile 88 EGR Valve 6 Cyl 3.8L Delphi

P311-393F34C    EG10023  New

23206 , FE3053 , EGR1027 , 17115364 , 17200267 , 2145007 , 17113283 , 10519 , 130-507 , 130507 , EGV514 , 12578042 , EGR1093

Qty:
$130.65
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle Aspiration Engine VIN Block Engine CID CC
1995 - Oldsmobile 88 Supercharged 1 V 6 Cyl 3.8L 231 3800
Delphi
1998 Oldsmobile Aurora EGR Valve Delphi

P311-5C90F6D    EG10170  New

FE3206 , 17114577 , EGR1092 , EGV513 , EGV691 , 226129 , 12578040 , 2145058 , 17200258 , 10523 , EGR1043 , EGR1245 , 4F1088 , 17113301 , FE3052 , 17113713

Qty:
$154.29
Delphi EGR Valve
  • EGR Valve
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle
1998 - Oldsmobile Aurora
Delphi
1994 Oldsmobile Bravada EGR Valve Delphi

P311-031B39E    EG10031  New

FE3054 , 130508 , 17200269 , 226001 , 10524 , EGV515T , 4F1137 , EGR1044 , 17113533 , 2145593 , 17115340 , 12578043 , EGV515 , 130-508 , EGR1094

Qty:
$108.53
Delphi EGR Valve
  • EGR Valve
  • Optional
  • Product Attributes:
    • EGR Valve Type: Linear
  • Delphi's OE line of EGR valves provides accurate exhaust flow control and emission control; Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments; Each valve and seat is precision machined, helping to maintain long-term stability and performance; No spacers or washers are required and they come with gaskets for an exact fit, saving time, labor and more bay turns for repair shops.
Brand: Delphi
Additional Fitment Information:
Vehicle
1994 - Oldsmobile Bravada
Standard Ignition
1998 Oldsmobile 88 EGR Valve Standard Ignition

P311-33585AE    EGV466  New

LHE 1550AC , 12570094 , 776-02051 , 19240980 , LHE1550AA , 1M6 , 214-5051 , 214-1033 , 214-5057 , 17096199 , 2-9138 , 41530 , 5163 , 12578034 , 17113645 , 10510 , 17113643 , EG10169 , 17113617 , 4F1054 , EG10030 , 214-2274 , 214-5067 , EGR1030 , 17095163 , 17113284 , 70-5517 , 130-509 , EGR1095 , 911-695 , 10520

Qty:
$121.34
Standard Ignition EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Electronic
    • Gaskets Included: Yes
    • Hose Connector Quantity: 1
    • Terminal Gender: Male
    • Terminal Quantity: 5
    • Terminal Type: Blade
  • Heavy-duty solenoids and stainless-steel valve components ensure durability. Alloy sensor contact ensures durability and proper performance. Includes gasket that is impregnated with graphite. Direct-fit replacement for ease of installation.
Brand: Standard Ignition
Additional Fitment Information:
Vehicle Body
1998 - Oldsmobile 88 Sedan
Standard Ignition
1996 Oldsmobile Bravada EGR Valve Standard Ignition

P311-222962E    EGV589  New

EG10009 , 214-1080 , 8-17096-309-0 , 2-9157 , 214-1038 , 17113619 , 17096188 , 70-5542 , 8-12568-582-0 , 8-17113-405-0 , EG10026-11B1 , 17093020 , 214-5071 , 12568582 , 17113575 , 17113618 , EG10026 , 17096309 , 214-1960 , 214-5054 , EGR1043 , 17113303 , 8-17113-618-0 , 4F1403 , 10516 , 8-12576-918-0 , 214-1042 , 17113615 , 17113405 , 214-5009 , 8-17113-303-0 , 8-17113-278-0 , 776-01631 , 19146117 , 214-5070 , 8-17200-276-0 , 911-164 , 70-6060 , 41528 , EGR1067 , 214-1065 , EGR1067VC , 8-17096178-1 , EG10175 , EGR1273 , 4F1139 , 2M1 , 17112996 , 8-25180-481-0 , 130-2042 , 17113278 , 8-17096-188-0 , 12576918

Qty:
$126.36
Standard Ignition EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Electronic
    • Gaskets Included: No
    • Terminal Gender: Male
    • Terminal Quantity: 5
    • Terminal Type: Pin
  • Heavy-duty solenoids and stainless-steel valve components ensure durability. Alloy sensor contact ensures durability and proper performance. Includes gasket that is impregnated with graphite. Direct-fit replacement for ease of installation.
Brand: Standard Ignition
Additional Fitment Information:
Vehicle
1996 - Oldsmobile Bravada
Standard Ignition
2003 Oldsmobile Silhouette EGR Valve Standard Ignition

P311-01ADB88    EGV612  New

214-1090 , 70-6179 , 12581876 , 7760-1621 , 12633889 , 2-9173 , 12573722 , 12565309 , 12613270 , EGR4372 , EGR1147VC , 130-2098 , 911-163 , 9Q4 , EGR1147 , EGR1291 , 41525 , 70-5587 , 776-01621 , 2EGR0002 , 214-2098 , EG10172 , 4F1051 , 24508966

Qty:
$77.87
Standard Ignition EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Electronic
    • Gaskets Included: No
    • Terminal Gender: Male
    • Terminal Quantity: 5
    • Terminal Type: Pin
  • Heavy-duty solenoids and stainless-steel valve components ensure durability. Alloy sensor contact ensures durability and proper performance. Includes gasket that is impregnated with graphite. Direct-fit replacement for ease of installation.
Brand: Standard Ignition
Additional Fitment Information:
Vehicle
2003 - Oldsmobile Silhouette
True Tech
1994 Oldsmobile Achieva EGR Valve 6 Cyl 3.1L True Tech

P311-3266857    EGV384T  New

130-2027 , 4F1049 , 9C3 , 10551 , 214-5004 , 41334 , 17091147 , 17112477 , EGR173 , 17092178 , 214-2129 , 70-5641 , EGR159 , 214-5002 , 17112683 , 19187311 , 2-9132 , 70-5632 , 4F1052 , 17112652 , 17112610 , 130-500

Qty:
$69.66
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Mechanical
    • Gaskets Included: Yes
    • Mounting Type: Bolt Mount
    • Terminal Gender: Male
    • Terminal Quantity: 4
    • Terminal Type: Pin
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Block Engine CID CC
1994 - Oldsmobile Achieva V 6 Cyl 3.1L 189 -
True Tech
1990 Oldsmobile Cutlass Supreme EGR Valve 6 Cyl 3.1L True Tech

P311-3266857    EGV384T  New

130-2027 , 4F1049 , 9C3 , 10551 , 214-5004 , 41334 , 17091147 , 17112477 , EGR173 , 17092178 , 214-2129 , 70-5641 , EGR159 , 214-5002 , 17112683 , 19187311 , 2-9132 , 70-5632 , 4F1052 , 17112652 , 17112610 , 130-500

Qty:
$69.66
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • ; Electronic Control
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Mechanical
    • Gaskets Included: Yes
    • Mounting Type: Bolt Mount
    • Terminal Gender: Male
    • Terminal Quantity: 4
    • Terminal Type: Pin
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Block Engine CID CC
1990 - Oldsmobile Cutlass Supreme V 6 Cyl 3.1L 189 -
True Tech
1988 Oldsmobile 98 EGR Valve 6 Cyl 3.8L True Tech

P311-3266857    EGV384T  New

130-2027 , 4F1049 , 9C3 , 10551 , 214-5004 , 41334 , 17091147 , 17112477 , EGR173 , 17092178 , 214-2129 , 70-5641 , EGR159 , 214-5002 , 17112683 , 19187311 , 2-9132 , 70-5632 , 4F1052 , 17112652 , 17112610 , 130-500

Qty:
$69.66
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • ; with U.S. Emissions
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Mechanical
    • Gaskets Included: Yes
    • Mounting Type: Bolt Mount
    • Terminal Gender: Male
    • Terminal Quantity: 4
    • Terminal Type: Pin
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1988 - Oldsmobile 98 Regency V 6 Cyl 3.8L 231 3800
True Tech
1991 Oldsmobile 98 EGR Valve 6 Cyl 3.8L True Tech

P311-3266857    EGV384T  New

130-2027 , 4F1049 , 9C3 , 10551 , 214-5004 , 41334 , 17091147 , 17112477 , EGR173 , 17092178 , 214-2129 , 70-5641 , EGR159 , 214-5002 , 17112683 , 19187311 , 2-9132 , 70-5632 , 4F1052 , 17112652 , 17112610 , 130-500

Qty:
$69.66
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • ; OE No. 17091147
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Mechanical
    • Gaskets Included: Yes
    • Mounting Type: Bolt Mount
    • Terminal Gender: Male
    • Terminal Quantity: 4
    • Terminal Type: Pin
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Block Engine CID CC
1991 - Oldsmobile 98 V 6 Cyl 3.8L 231 3800
True Tech
1998 Oldsmobile Cutlass EGR Valve 6 Cyl 3.1L True Tech

P311-563D83C    EGV468T  New

214-1083 , 1M7 , 214-5061 , EGR4320 , 10515 , EGR1179 , 70-5598 , 130-2040 , 911-696 , EGR1029 , EG10022 , 4F1871 , 214-2275 , 41529 , 2-9139 , 12578041 , 70-6148 , 70-5585 , 70-5515 , 17096154 , EGR1145 , 4F1050 , 17113285 , 19240981 , 4F1569 , 4F1839

Qty:
$97.55
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Shape: Oval
    • Digital/Mechanical: Electronic
    • Gaskets Included: Yes
    • Hose Connector Quantity: 1
    • Terminal Gender: Male
    • Terminal Quantity: 5
    • Terminal Type: Blade
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Block Engine CID CC
1998 - Oldsmobile Cutlass V 6 Cyl 3.1L 189 -
True Tech
2004 Oldsmobile Alero EGR Valve 6 Cyl 3.4L True Tech

P311-3897CE4    EGV612T  New

214-1090 , 7760-1621 , 12613270 , 214-2098 , 70-5587 , EGR1147 , 9Q4 , 4F1051 , 2EGR0002 , 130-2098 , EGR4372 , 776-01621 , EG10172 , 2-9173 , EGR1147VC , 12633889 , 911-163 , 70-6179 , 41525

Qty:
$67.52
True Tech EGR Valve
  • Exhaust Gas Recirculation Valve
  • Product Attributes:
    • Connector Gender: Female
    • Connector Shape: Oval
    • Digital/Mechanical: Electronic
    • Gaskets Included: No
    • Terminal Gender: Male
    • Terminal Quantity: 5
    • Terminal Type: Pin
  • Standard?« T-Series EGR valves rotate 360?? and along with the necessary washers they accommodate multi-fit applications. Made from quality components for dependability.
Brand: True Tech
Additional Fitment Information:
Vehicle Block Engine CID CC
2004 - Oldsmobile Alero V 6 Cyl 3.4L 207 -
ACDelco
2000 Oldsmobile Intrigue EGR Valve ACDelco

P311-43A4D75    W0133-1683597  New

Qty:
$277.43
ACDelco EGR Valve
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle
2000 - Oldsmobile Intrigue
ACDelco
2002 Oldsmobile Silhouette EGR Valve ACDelco

P311-1A445BE    W0133-1951229  New

Qty:
$221.60
ACDelco EGR Valve
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle
2002 - Oldsmobile Silhouette

Latest Oldsmobile Repair and EGR Valve Installation Advice

CarJunky AutoAdvice

oldsmobile stalling

Showing 2 out of 3 Posts | Show 1 Hidden Posts
Question From ebryga on oldsmobile stalling

Anyone have any ideas?
I recently bought a 1985 oldsmobile 98 at an auction, it's in really good shape with only 125000 km on it, with a 3.8 fuel injected engine
The problem i'm having is it won't stay running when it's cold. When you start it, it will run for about a minute and then stall unless you stay on the gas. When it does stall, it will start right up again, but you still have to stay on the gas until it warms up.

So far, i've had the fuel pump changed, and the intake gasket replaced. I've sprayed the throttle body with cleaner, and removed the high idle valve and sprayed it down with cleaner, but the problem still persists.

Response From dave284 Top Rated Answer

Have you checked the EGR valve...some times they stick other times they leak

Response From Tom Greenleaf

Of interest: I knew of that exact car owned by my parts store owner - demo (year old or so) and it idled annoyingly low - would vibrate the car! Back to well known dealer a few times and it was written off as normal and it didn't stall but seemed like it would all the time. Idle isn't supposed to be mechanically set and the computer setting just wouldn't allow to raise it just a tad.

Been a while - I think I found an adjustment to something on throttle body or idle speed motor just to kick it up 100 RPM as the rock bottom base idle and it stayed that way just fine for 20 years more with no problms. It was just that year and that car - not the others. It was the first year for the FWD '98 - right? Just a thought - the one I dealt with didn't stall,

T

Power hesitation for 2002 Oldsmobile Alero

Showing 8 out of 8 Posts
Question From towcar on Power hesitation for 2002 Oldsmobile Alero

Hi guys, first time lurker here.

My car recently started having issue, where at lower speed the car will lose power (the engine still revs, but not much accleration/power, it gains speed slowly and jerks a little), after a while the car would gain more power again with a stronger jerk (35mph +). Described the symptom to my co-worker (he's ASE certified, but he's currently a maintenance supervisor at my place and he's always busy) and he scanned with his meter (don't know what model) and it didn't give any code. He suggested me to take the car to a transmission shop and have it checked.

At Aamco the guys checked it out and said it's a not a problem with the transmission but with the Catalytic Converter, the tech took it off and the car ran fine. They said the cat is plugged and it stinks when he took it off. As my cat is still under warranty (8 years, 80k Mi). They didn't charge me and I took it to the dealer.

Dealer called back saying the problem isn't with the Cat, but they did get a random misfire code and a code for the EGR valve. They wanted to do a fuel induction service, new spark plugs, wire, and replace the EGR valve, $899 + tax and all the fees of course.

I have my co-worker called them and explain to what the guys at Aamco find but the dealer insisted that they problem isn't with the Cat and that they have better machinery for the diagnosis of the problem.

I've had service twice before at this dealer due to bad gas (or so they say) where they did the fuel induction service, spark plugs, the whole deal, and drained the gas tank and cleaned it. They also mentioned each time when I was paying that they also replaced the fuel pump under warranty, even though they're not supposed to do. The last time I was there was 1.5 years ago and my spark plugs and wire looked brand new to my co-worker.

I don't know who to believe here, something tells me that the dealer is kinda fishy with the fuel pump replacement (may be that's the real culpit and they're charging me all the extra work for nothing??).

I can always take it to another shop but it'd be another $100. What do you guys think I should do? My co-worker did say may be he can bang on the cat for me and put it back where it won't be plugged anymore, but i think also render the cat useless.

Help...

Response From towcar

Thanks for the great suggestions and knowledge guys.

The thing is I just had all the fuel system cleaned, new spark plugs, wire, fuel tank cleaned less than 2 years ago. So the real question is could whatever bad stuff i got in my tank from before i got my fuel system cleaned slowly caused this issue almost 2 years later?

Or could the EGR valve cause the cat to fail?

I really have a few options:

1) Pay $1k (899 + tax and fees) for the dealer to fix it. I think there is more gaurantee there.
2) Go to a second dealer to get a second opinion (another $100).
3) Pay $5xx for the shop to replace the cat. Don't know if there is guarantee their even as they diagnosed it as a cat problem.
4) Buy a cat online and swap it out myself (i think the cat is bolted) as the mech at the shop was able to test drive without it so the bolts should still in good shape and don't have to be cut.

Response From Tom Greenleaf

Any reason - if the engine isn't running near perfectly it would likely throw too much raw gas at converter and kill it.

Alone a restricted exhaust like a bad converter would just take power away smoothly IMO. A source problem needs to be fixed or you'll just be doing another converter soon. Anything that can make an engine run poorly can cause this - may need pro help to diagnose it,

T

Response From Loren Champlain Sr

towcar; The symptoms point to a plugged catalytic converter. This can be checked with a pressure guage connected at where the oxygen sensor is located. Anything above 2psi is not acceptable. With that said, if it is a plugged cat, something had to 'cause' it. As we say in the industry, Cats don't die, they are murdered. A misfire, if ignored, can ruin a cat. Sooooo.... The injector service shouldn't be needed more often than 30K mile intervals. Of course, it depends on what fuel you have been using. Stay with name brands. Chevron, Union 76, Texaco, ect. No minit mart or ARCO. If the cat smelled like sulphur, it is dirty. If it is dirty it's because it's burning contaminants. Being an '02, your car has misfire detection and should tell you which cylinder is causing the problem, as well as setting a code for low catalyst efficiency. The EGR valve could cause a problem if it is sticking open, but you should be able to tell if the engine is running poorly.

Response From towcar Top Rated Answer

Thanks for the quick reply.

I think it could be due to the "bad gas" problem that was fixed before. I only go to places like Sunoco and Chevron, and occasionally Walmart gas station. I never go to the mom and pop shop.

It could be that the Cat problem is caused by burning of bad gas from before?

My dilema is that if it's the Cat, it's still under warranty. However, I can't convince the current dealer that's the issue. Taking it to another shop is risky as it's another $100 and it may be a different diagnosis.

Perhaps my best course of action is to wait for my co-worker friend to look at it and may be try to lose up the cat a bit to see if the problem goes away first. If it is the cat may be i'll get the part myself on the web and pay some local shop to replace it for me. screw the warranty...

Response From Loren Champlain Sr

I'd definitely pursue the warranty option. The aftermarket 'cats' just don't last. But, if it is the cat, you need to address what caused it to die.

Response From Tom Greenleaf

As our own famous DanD would say - converters don't die - they are killed. Any misfire must be corrected asap or it will kill a converter(s),

T

Response From towcar

Additional detail: the lower intake manifold/gasket was replaced before as well (it leaked coolant). Apparently it's very common the V6.