ronsws6

iTrader: (1)

Think I have a bad MAF, but want opinions. Yesterday, (it was a rainy day) my car suddenly started running like crap.! (running rich, hesitating, shutters etc) eventually it ran ok. Now if I start it, it is fine for about 2 minutes then starts acting up again. Before I go drop 150-200 bux, any opinions?

BLK02WS6

iTrader: (2)

Unplug it and find out...

Kaltech Tuning

iTrader: (17)

Try this ^^ and if not look at your O2 sensors.

70cartruck

iTrader: (1)

im having some issues with my car also......if it runs perfect in safe mode....with the mass air sensor unpluged.....can that mean a bad mass air flow sensor....it doesnt throw a code for it......?

sorry to hijack the thread.....

thanks

BLK02WS6

iTrader: (2)

That is actually called Speed Density, not safe mode. But yes, if it runs perfect with the MAF unplugged, you may have a bad MAF - but it could just be dirty. They make a MAF cleaner spray - look for it at the auto parts store. Also, look for anything caught in the wires - saw a guy had foam from the air lid gasket caught in a descreened MAF once causing issues...

Mike454SS

iTrader: (4)

MAF sensors don't always throw a code (mine never did)...but you can tell with a good scan tool if it's giving ridiculous readings.

Either way, try unplugging it, try cleaning it properly, and scan the car before you spend any money on throwing new sensors at it.

ronsws6

iTrader: (1)

Thanks. For some reason I thought I recalled someone saying this didn't work on LS1's, so I hadn't tried it. I'll unplug it and see if it gets better. If it does I'll pull it and clean it first and see what happens.
Thanks again

ronsws6

iTrader: (1)

I think I remember a story of someone stuffing a shop towel in one to "keep the mice out" and forgetting to remove it and then starting having MAF issues.