Idle problem
#1
Idle problem
Hey guys, I have a 97 f150 w/4.6, auto. In park and nuetral it idles fine, but while in gear when you come to a stop, the idle will surge and sometimes the engine will stall. With the a/c on it is not as likely to stall but the idle still surges. Thanks in advance for any advice or suggestions.
#2
Sounds like it might be your MAFS "Mass Air Flow Sensor". Usually when they go bad. And you run the a/c it puts a strain on the motor and will cause it to run rough and die. But I could be wrong. I don't want to give bad advice. But that would be my first clue. Either that or you have a bad vacuum line somewhere. Such as a PCV valve. Don't ever look at the most expensive things. Always start cheap. Then if it doesn't fix it. Go to the more expensive things. Just a tip. Hope I helped you out alittle.