Is my maf going bad?

[ml21]

Hey guys happy holidays, i have a quick question when my 01 pathfinder is warmed up and sitting at a light in drive with my foot on the brake i feel it slightly kinda misfire/jerk is this the maf going bad?

[m0nkeyprince]

i think that has more to do with the ignition, check your spark plug wires, when was the last time you changed the spark plugs? if you washed your engine bay, that could cause temporary misfires. If you get a code, the "check engine" light, then that would help pin point the problem faster.

[ml21]

spark plugs done 20k ago never washed engine bay and there is no check engine light on. what i do kno is that its using more gas than usual and i notice the little misfires/jerks when idle in drive with foot on brake only

[asnorton44]

Coils are notorious for going bad also.

[ml21]

Coils are notorious for going bad also.

coils replaced at 60k by nissan under warranty my truck is now at 90k could they go bad that fast plus if coils were bad i would have a ses light on but mines isnt on and i checked the ses light dose work.

[asnorton44]

Okay if coils were replaced definately look into the MAF.

[ml21]

Is there any other way to dertimine its the maf such as a test? because at 60k it was replaced by nissan with my coils

[asnorton44]

Your MAF was replaced with the coils at 60K?

[ml21]

yes nissan dealership replaced all 6 coils and maf under warranty because i went in once for a severe misfire and stalling and mechanic recommended maf and coils because he thought it was a customer pay tickect he didnt kno i had a warranty so nissan had to pay the price for their mistake thinking i was out of warranty when i wasnt. but any input on what this might be the misfire/jerk is very annoying

[asnorton44]

How many miles on the vehicle now?

[ml21]

There are 97,000miles

[ml21]

anyone have any ideas also found out that when i hold rpms to about 2000 it drops too 1500 and goes back up to 2000 on and on what could this be?

[asnorton44]

Have you tried cleaning the MAF yet? Whats the air filter lookin like?

[ml21]

maf cleaned 2 months ago and new air filter as wel

[m0nkeyprince]

So lets see, no codes, but there is still a misfire or jerking around the engine, could it be a bad motor mount? but that would make the engine shake even more at the highway. hmm

MAF- check
Coils/plugs -check
Air/fuel filter- check, you did do your fuel filter right? if not, its a quick 20 min job that will cost you 12 dollars
motor mounts
throttle body- i suggest you clean that too, also very easy
timing

[m0nkeyprince]

where do you live? if you live near san jose, CA i could lend you my MAF , see if thats the problem

[ml21]

where do you live? if you live near san jose, CA i could lend you my MAF , see if thats the problem

Thanks for the maf offer but I live in chicago, but I will check out my fuel filter