Hello all. Im getting stumped on my MAF. About every month month and a half the MAF quits and car dies and wont restart. I unplug it to get it home take old out do votage test at connection. Plus other tests i have done in past but nothing is telling me what is causing them to go bad. Auto parts store is getting pissy about warranty replacement that often. Any help finding real issue would be great. Also exhaust does have almost like a bleach smell to it at rear of car.

How are you determining that each one is bad?

What auto parts store?

Who is the manufacturer of the part?

What are the meter readings on a new one?

What are the meter readings on a bad one?

Is the car completely stock? No aftermarket air intake or exhaust or tune in the PCM or anything else etc.? If there is aftermarket stuff, list it please.

It might be that the cat is partially melted. I've smelled a nearly-bleach smell on a couple that the core was mostly melted and what little of it wasn't melted was processing exhaust like it was at high load (because it was processing all the exhaust through 10% of the core). That came along with performance issues though.

Are you having performance issues (besides the above)?

How many miles on the car?

How many miles have you owned the car?

Parts came from autozone but it is acdelco also tried delphi still same issues. Never check reading on bad ones anymore the pigtail always checks with voltage drop test i know i have ugged scan tool into a few times and new ones read right where they need to be. The car does seem a little weak. Car currently has 252xxx miles on it. Have had it for about 6k of that. I ha e also put new TPS, and baro sensor as well as a new vacuum harness. New leaks around intake either.

Is the car completely stock? No aftermarket air intake or exhaust or tune in the PCM or anything else etc.? If there is aftermarket stuff, list it please.

All I know is you say they were bad and you tell us you tested the wiring but don't tell us how or the results.If the hot wire is not being damaged due to no air filter of such then your testing is very suspect.

i kmow what the results are suppossed to read on the voltage drop tests. As well as signal volts both with key on engine off and key on engine running. That doesnt need to be discussed i dont think. All im looking for is other things to check outlike egr system or cat. Again car is bone stock The car was owned from new till i boight it by the same person. Rigorously maintained. I have recipts for everytime it had anything done to it. Im just looking for direction on other things to investigate deeper.

There isn't anything else to investigate. If the MAF works for a while at a time then wiring and PCM are probably good. What'* next to check at that point? The difference between a bad MAF sensor and a good one. That'* why we are attempting to follow this path.

Nothing about the EGR system will damage a MAF sensor . . . unless you take an EGR part off and use it to repeatedly strike the MAF sensor.

Same goes for the catalytic converter.

So I'm supposed to believe that your tests prove the integrity of the wiring. Did you do pin tension tests? How many amps used in the load test?
If you don't want to provide actual test results I see no reason to continue with this conversation.

Hello I have the same car and the same exact problem I don't have volt testers or anything but my MAF SENSOR GOES OUT WITHIN A MINUTE IM disabled DNT have money to do ALOT I've bought some online through eBay for 20$ first one lasted 4 months then I bought 2 backups from another distributor and these threw a code in 2 minutes I tryed both of them then got out first one cleaned with MAF SENSOR cleaner cleaned out air box and throttle body inside and out with the MAF SENSOR CLEANER it did fine for 5 miles then threw code runs like crap rough idle no power backfires car shakes has 202000 miles on it has brand new cat and oxygen sensor bank 1 . For the life of me I can't figure it out , I've worked on cars and done complete restos for 30 years or more as I understand the ecu is also in the air box ? Any and all comments welcomed DNT nd ignorant ones ither .