HELP with MAF
#1
HELP with MAF
I have joined this board because i have actually gotten a lot of help with this so far but now I am stuck. I have a 2000 MC with a 3.8 and also a K&N filter. It has been throwing codes (O2 sensor) since the day I bought it 3 years ago. No big deal, it was still driveable. 2 weeks ago, it started stalling and not starting and I took it to the shop. Couldn't figure it out so they replaced spark plugs and wires. Took it home and it stalled again (right in the middle of driving, when I slow down). Sometimes won't start. It wasn't originally throwing a code when it first started stalling, but after the plugs and it stalled it said MAF/VAF circuit. My boyfriend had the bright idea of unplugging MAF and no more stalling. So we ordered a new one. Put it in, and now its stalling again. Any ideas would be appreciated. I read IAC, could this be the problem. He checked the fuel pump too and is going to see if exhaust leaks. I can drive it now but I need to have it fixed. Also cleaned the air filter.
#2
Sounds to me like an O2 sensor is or has failed.....when he gets the exhaust checked.....Have them test the O2 sensors...(theres 2 of them)....coudnt hurt to remove the IAC and clean it as well... how many miles is on it?.....
#5
mine was a IAC valve and not the o2 sensor but it would say that it was the front o2 (upstream O2 changed 3 times) .Took a while to chase it down but after live scanning the car so we could see how everything was running it was just a stupid 45$ IAC.
And it fixed mine for good . Make sure you disconnect the batty before you install the IAC .
And it fixed mine for good . Make sure you disconnect the batty before you install the IAC .
#6
Thanks, I am going to try the IAC valve next. There were also instructions that came with the new MAF that says I have to reset the car, not the codes (which we di) and that a dealer would have to do that. We unplugged the battery for an hour to try it ourselves but it did nothing.
#8
Yes dump the K&N just causes that exact problem....
And dont forget when u disconnect the battery it may also clear your O2 code....
#10
Maf cleaner cures k&n oil issue. I haven't had a problem with mine yet , in either of my 3800 cars. Clean your iac then measure the pintle I do believe it should be out 1 1/8 of an inch. Also the front o2 sensor helps tell your cars computer how much fuel to use.