95 Pathfinder Check Engine Light

Umby · Feb 18th, 2005, 08:15 AM

Hey guys. I just picked up my second Pathfinder... an automatic XE-V6 4wd with about 123k on the clock. Truck is in great shape and runs wonderful... but when I sit in any kind of traffic the CE light comes on but when I hit the open road for a few minutes it will turn off. Any ideas? Anyway I can pull codes on it by myself? THANX!!! Oh yeah, I'm a newb here...

Umby · Feb 18th, 2005, 11:09 AM

OK, so I realized that there was a thread on how to check the codes and I did so... its giving me a 12 which is mass air flow sensor... What do I need to check???

Umby · Feb 18th, 2005, 04:42 PM

Anyone??? Please?

**88pathoffroad** · Feb 18th, 2005, 10:23 PM

I'd suggest checking the mass airflow sensor.

Umby · Feb 20th, 2005, 05:27 PM

Well... I pretty much got that part... but how can I tell if anything is wrong with it??? The truck runs great, all the connections are OK, so is there anyway to test it???

NPath · Feb 20th, 2005, 07:33 PM

Quote:

Originally Posted by Umby

Well... I pretty much got that part... but how can I tell if anything is wrong with it??? The truck runs great, all the connections are OK, so is there anyway to test it???

Look for a red wire inside the MAF sensor. If the wire is broken, then time to get a new one.

Umby · Feb 21st, 2005, 12:14 AM

THANX!!! I'll check it tomorrow.

jacksapple · Feb 21st, 2005, 12:57 AM

If you will do a search here in this forum for Mass Air Flow, or MAF you will find some information on how to check and possibly clean the Mass Air Flow Unit.

Umby · Feb 26th, 2005, 10:06 AM

Thanx, I'll do that...

Lotust · Feb 26th, 2005, 01:44 PM

Quote:

Originally Posted by Umby

Thanx, I'll do that...

I did not find any threads on cleaning it..

I did find this one but the picture links are messed up.

http://nissan4wheelers.com/eve/ubb.x...5&m=7546012535

Lotust · Feb 26th, 2005, 04:14 PM

Quote:

Originally Posted by Lotust

I did not find any threads on cleaning it..

I did find this one but the picture links are messed up.

http://nissan4wheelers.com/eve/ubb.x...5&m=7546012535

I just went outside and cleaned mine. It was easy ! just 2 scews and up it comes out. Then just rub GENTLY with rubbing alcohol I used 70% but the write up says 90% i dont know where to find 90%

here are some pics of what came off. I hope i pick up a few MPG.

http://groups.msn.com/_Secure/0WwCbAvAZVG6apza!Vs77OHaJTx4zPG*17!dTdDKz8PAHP1gPD Ecrfettu3Yna5v63rmzma0F8ZS5Y!zBmc8TJGEdteXUfYId1Ec ab5BeZ*fOpwOn8rYMGwz7zWdl3LT*OyDZxofMoKY/2-26-05%20MAF%20sensor%20008.jpg

http://groups.msn.com/_Secure/0WwAAAPEZkm6apza!Vs77OHaJTx4zPG*17!dTdDKz8PBC0GmNW Fs!52TZUa9H*6If8Viy22CHqqhwoUAmBMBe0AYT56cg87jhw*r IJyAIKqgOAjGjOMXNA60R4wXgj784Ac5GIBT5mSM/2-26-05%20MAF%20sensor%20009.jpg

Umby · Feb 27th, 2005, 12:11 PM

Well, I cleaned it and checked it... still getting an engine light. Should I suck it up and get a new one? Is there anything else that could trigger that code? Like I said, the only noticable problem with the car is an occasional rough idle...

**88pathoffroad** · Feb 28th, 2005, 03:53 AM

Replace all the vaccuum lines and give it a tune-up. There are entirely too many things that can cause that kind of problem without ruling out all the new parts.

Umby · Feb 28th, 2005, 05:20 AM

I actually lucked out and was able to test fit a new MAF on the car yesterday and it didn't help... time to start checking every damn thing

**88pathoffroad** · Feb 28th, 2005, 03:33 PM

Try running a totally new separate ground wire to the MAF. I've heard of that helping for a few people.