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Best Selling Genuine Nissan Oxygen Sensors

  • We Stock the following top leading brands, including NTK, Denso
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We stock Oxygen Sensor parts for most Nissan models, including 300ZX, 350Z, 370Z, Altima, Armada, D21, Frontier, Maxima, Murano, Pathfinder, Pickup, Quest, Rogue, Sentra, Titan, Versa, Versa Note, Xterra.

NTK
2005 Nissan X-Trail Oxygen Sensor NTK

P311-0110040    W0133-1890042  New

Qty:
$75.78
NTK Oxygen Sensor
  • 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.
  • OE Connector
Brand: NTK
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2005 - Nissan X-Trail
Denso
1999 Nissan Frontier Oxygen Sensor - Upstream Left 6 Cyl 3.3L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Left
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Frontier V 3275 - Upstream Left
Denso
1995 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1995 - Nissan Maxima V 2988 182 Upstream
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream Right 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Right
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream Right
Denso
1999 Nissan Frontier Oxygen Sensor - Upstream Left 6 Cyl 3.3L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Left
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Frontier V 3275 - Upstream Left
Denso
1995 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1995 - Nissan Maxima V 2988 182 Upstream
Denso
1999 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • Excludes Calif. O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Maxima V 2988 182 Upstream
Denso
1999 Nissan Maxima Oxygen Sensor - Upstream Right 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Right
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • Calif. O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Maxima V 2988 182 Upstream Right
Denso
1996 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • To 06/96 O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1996 - Nissan Maxima V 2988 182 Upstream
Denso
1996 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • From 06/96 O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1996 - Nissan Maxima V 2988 182 Upstream
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream Right 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Right
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • From 06/98; Calif. O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream Right
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • From 06/98; Excludes Calif. O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • To 06/98 O.E. Quality Replacement Sensor
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream
Denso
1995 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor 2 Required
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1995 - Nissan Maxima V 2988 182 Upstream
Denso
1999 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor 2 Required Excludes Calif.
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Maxima V 2988 182 Upstream
Denso
1999 Nissan Maxima Oxygen Sensor - Upstream Right 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Right
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor Calif.
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1999 - Nissan Maxima V 2988 182 Upstream Right
Denso
1996 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor 2 Required To 06/96
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1996 - Nissan Maxima V 2988 182 Upstream
Denso
1996 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor 2 Required From 06/96
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1996 - Nissan Maxima V 2988 182 Upstream
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream Right 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream Right
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor From 06/98; Calif.
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream Right
Denso
1998 Nissan Maxima Oxygen Sensor - Upstream 6 Cyl 3.0L Denso

P311-29350D2    234-3098  New

Qty:
$49.20
Denso Oxygen Sensor  Upstream
  • 3 Wire, Direct Fit, Heated, Wire Length: 35.04
  • O.E. Quality Replacement Sensor 2 Required From 06/98; Excludes Calif.
  • OE Style
  • DENSO oxygen sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Additional Fitment Information:
Vehicle Block CC CID Position
1998 - Nissan Maxima V 2988 182 Upstream

Latest Nissan Repair and Oxygen Sensor Installation Advice

CarJunky AutoAdvice

OXYGEN SENSOR- 2001 NISSAN PATHFINDER

Showing 2 out of 2 Posts
Question From LIZV on OXYGEN SENSOR- 2001 NISSAN PATHFINDER

2001 NISSAN PATHFINDER 6CYLINDER. Would like to know where are the oxygen sensor is located for bank1?

Response From Hammer Time Top Rated Answer

If you look at the right side of the engine, right where the plenum meets the lower intake, you will see the connector aligned with the second bolt from the rear. Follow the wire to the sensor.

95 nissan altima gxe

Showing 2 out of 2 Posts
Question From aardvark on 95 nissan altima gxe

i was told this car also needs a new oxygen sensor. can i replace this myself?

Response From Tom Greenleaf Top Rated Answer

Anything in exhaust system will be tricky and a O2 sensor is no exception, T

Ps: Corrosion and time can make any of this a pill

nissan altima parts

Showing 6 out of 6 Posts
Question From rjwt on nissan altima parts

Hi,

I'm new to this site, but it seems like the appropriate place for this question. If not, please let me know. I have a 1995 Nissan Altima with a broken power transistor, broken oxygen sensor, and an exhaust leak. It has an 8 month old new transmission though and everything else works as far as I know. We are ready to just get rid of it, but were wondering if there is a way to sell it for parts or even if the parts are worth anything? If anyone has advice or experience with selling cars for parts please post for me.

Thanks,
Becca

Response From carjunky

Hi Becca,

Depending on how many miles the car has on it and the overall shape of the car would help make this an easier question to answer. According to kelly's blue book a 95 nissan altima SE Sedan 4Din with 100k miles in fair shape would trade in for $995 and private party sell for $2450.


If you could buy the parts needed.
I looked in the parts catalog above and they would range for:

Catalytic Converter runs from $131 - $171
Muffler $109
oxygen sensor $30 - $115

Nissan Altima Replacement parts

so your looking at about $400-$700 with parts and labor, so if the car is in good shape it might be worth fixing it up. Since if you part the car unless you want to strip it down and see headlights and all piece by piece, its up to you. But I think thats a lot of time to spend on parting out a car. You could always see what a local slavage yard or junk yard would pay....

Response From rjwt

thanks for your input. We don't really want to put money into fixing it, but at the same time I feel bad about wasting the parts that work. Perhaps we will donate it to some charity and they can fix it and sell it if they want to. Anyway, thanks for taking the time to respond.

Response From Tom Greenleaf

Perhaps sell it whole and state that it needs work. I parted out a car once and it took me more time than it was worth. Just an idea for you or folks in the same position, Tom

Response From rjwt Top Rated Answer

thanks again-- I think that's what we'll try first.

Response From Tom Greenleaf

I think if you stated the overall condition, miles etc and a price - and location you might get some better response. If it's really just a parts car, you probably will do better to advertize local to you. Good Luck, Tom

Engine Runs Rough

Showing 2 out of 2 Posts
Question From photohiker on Engine Runs Rough

I have a 1992 Nissan Sentra with a 1.6L engine(170,000 miles) that starts ok, but runs rough & idles rough. It also has a real lack of power when accelerating. I changed the oxygen sensor & inspected vacuum hoses for leaks, but no change.

Response From Hammer Time Top Rated Answer

It sounds like it has a dead cylinder or two. You have to determine which ones and why.

naughty altima

Showing 2 out of 15 Posts | Show 13 Hidden Posts
Question From Guest on naughty altima

This is what happens when I stop my 2001 altima (86000 miles) on the red light. The car starts to shake, RPM gauge goes 500-800-700-600…up and down, up and down…when I switch on AC and the RPM goes above 800 the shaking stops ….? The check engine light is off. I checked the spark plags already, they are ok. Went to Autozone and have it tested for codes, it passed without any codes being active…any idea ? dirty fuel injector ?

Response From Tom Greenleaf

Check for vacuum leaks and the integrity of the air filter and the housings along the way to be tight and no cracks found. You might have luck cleaning throttle body too,

T

Response From Guest

i am sorry but I am not following ? how can dirty air filter and cracked air filter hoses cause my engine to choke ?

Response From Tom Greenleaf

Ok: In the absence of any codes right now I was hoping for something simple. With the idle flutuating as is does it seems to be getting some wrong info as to the load on it to stay at a steady idle. Much of that is measures air flow, and speed of air which will make other computer adjustments to allow a stead idle. When you put the A/C on it knows there's going to be a load and picks a higher idle speed which seems to overcome what could be minor flaws in just the way the housing that holds the air filter and the parts involved with snorkeling air in to the throttle body. If there's mis information there the car gets confused.

Any leaks can cause problems. Basic vacuum hose is used and info is constantly being read and adjustment made to run perfectly.

I'm only guessing at some possiblities out of many. You may get lucky and find something not right, unhooked or something. Air filter alone even if dirty wouldn't just be allright with the A/C request. Cleaning the throttle body is just to rule out that while you may be there looking. Throttle body is metal - not a filter.

Being sensitive as you described until a load on it suggests intake and vacuum items MAY be the cause. Chances are if you held the idle up with gas pedal, brake on, in gear (use judgment please) to the 800 rpm it would smooth out also.

Just some ideas before it needs more help and diagnosing to figure it out. Also just a gut feeling this isn't dirty fuel or injector related because it seems to straighten right out with a small load,

T

Response From Guest

thanks so much !

Response From Guest


Thanks to your suggestion I have found 1 hose (in red) hanging lose. A guy at the gas station told me the hose should be connected to that round object - circled in red (forgive me my ignorance). Well.. The shaking is not so severe as it used to have been …however the problem still persists ….you think I should tighten the hose with some clamp ?

Response From Tom Greenleaf

Was that the larger hose to the black thing or a hose to the diaphragm where your red line is? I just couldn't see what was what too well. If a clamp was used I'd use one again. You can also try spraying something like carb cleaner at suspect leak areas and if idle changes that isn't right and there's still a leak. Careful doing that near hot engine parts if you try that,

T

Response From Guest Top Rated Answer


I opened throttle body (disconnected ait intake)… and it was clean like new after 85k miles…amazing ...


So anyways after weeks of deliberation I finally decided to make that formidable step and spend $45 and have my car diagnosed. The computer spit out 2 codes :
1. multiple cylinder misfires - I plan to replace spark plags, cables. The mechanic told me the cap and the thing inside is ok
2. oxygen sensor - and here is my dilemma :

1st option : There are oxygen sensors available for as much as $20 on ebay
http://cgi.ebay.com/ebaymotors/OXYGEN-SENSOR-nissan-ALTIMA-93-06-05-04-03-02-01-00-99_W0QQcmdZViewItemQQcategoryZ42610QQihZ015QQitemZ250266487859QQrdZ1QQsspagenameZWDVW
However they come with no connector so I would need to cut and splice the cables myself. If the connector is the problem, then I will need need to buy the connector …do you think that the connector might be the problem ? Is it easy to cut and splice those cables and hook up existing connector ? Do you want to go : new sensor/old connector ?

2nd option is to buy an oxygen sensor for $110 with the connector and then it is an easy plag and play.

So interesting …oxygen sensor with no connector = $20 …oxygen sensor with connector $110…is it so labour intensive to put the connector on the top of those cables ???


What do you recommend ? Thanks so much for your great help

Response From Tom Greenleaf

Just a note on O2 sensors. I don't know if all will splice in and work properly. Some are heated and reports from tech friends here still in biz (I'm not) is that cheap stuff comes back too much. Your call of course. Also know that IMO that short of wires and corrosion problems I think most O2 sensors are killed and not just failed by them selved and the upstream problem if not solved will wreck replacements.

I'd certainly do the tune-up items and have those ruled out. "multiple misfires" is a vague diagnosis so far as to what's causing it.......

T

Response From Guest

i searched a little more and it seems that leaking intake manifold gasket is usually a problem in altimas ca. 80-100k miles ...i replaced o2 sensor, did tune up (new spar plags, wires, cap and rotor) did not help. is there a way to check where I might have an air leak .. like some kind of spray to spray in air intake and see where it comes out ..maybe it is some hose .. when the engine is idling i hear sometinh like air leak .ssssssss ..getting ready to spend > $300...;-(

Response From Tom Greenleaf

Hearing a hissssss does sound like a vacuum leak and gaskets can leak as well as hose or whatever is holding vacuum. When they are not apparent easily I favor (*caution - fire hazard) spraying carb cleaner while at idle at suspect areas while listening and observing idle. When a leak is found idle may improve or get worse for a moment and or change sound of a hiss.

*Use care to do that with cooler engine and not directly on hot exhaust parts and be prepared.....

T

Response From Guest

do you think that the only way to repair leaking intake manifold gasket is to replace it ? this is a labour intensive thing and costs upward from $400...
how about RTV the hell of it would that help ? ...they checked the pressure on my engine and it goes down on idle ..

Response From Tom Greenleaf

If you could pin point a limited area of accessable intake gasket flaw (this time you could use motor oil in a squirt can and watch it suck in) then perhaps you could fake it with a small bead of high temp RTV. The last thing you need is RTV sucking into the engine and then fixing it right will look cheap!

T

Response From Guest

Hi,
Was wondering if this issue was ever solved. I also have a 2001 Altima with 156,000 miles. I have experienced the same problem. I replaced Cap, Rotor, Air filter, Fuel Filter, Plugs, wires. No change after warm up. The car runs great except for idle. I just found a hissing noise coming from a diaphram thingy with a vaccuum hose attached to it. After running my fingers up under it to see if I could hear the leak change, I realized that one of the diaphrams was open on the bottom and I was able to actuate the diaphram by pushing up under it which made the car want to stall.
I've never had any problems with this car and would drive it on a 1,500 mile trip tomorrow because the reliability of the car is that good. I don't know the name of the part and am going to just take it off and take it to auto zone and tell them I need to replace that piece. Will get back with results.

Response From Loren Champlain Sr

Sounds like you are referring to an EGR valve. Once removed, check to see if a piece of carbon is holding the pintle open. That would create a major vacuum leak.