I have a 3.8 liter impala ls, upon start up a loud noise coming from the air box vacinity comes on for about 30 seconds to a minute then shuts off.It sounds like some sort of fan kicking on. Can you please tell me what this is?? Also car has been acting as if it wants to stall, rpm's drop and car starts to putter and then brings itself back up to idle. I have checked the fuel pressure and it is where it's supposed to be. The service engine light hasn't come on so i can't get any codes. Please HELP!!
Apr 17, 2008 at 7:47 PM