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Idle problem

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Old 05-03-2007, 10:21 PM   #1
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Default 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.
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Old 05-18-2007, 04:38 AM   #2
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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.
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Old 05-22-2007, 08:28 PM   #3
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Default Same problem

I have a 97' 4.6 also with the same problem I pulled the IAC and cleaned it. This seemed to help, it still surges a little but it doesn't die.
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Old 05-24-2007, 09:11 AM   #4
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i.a.c is probably gummed up. i used brake cleaner to clean mine. idles great now. dont go crazy just a few sprays is all it takes.
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Old 01-23-2011, 03:33 AM   #5
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Doe anyone know if I can replace my 97 4x4 steering colum with one from a 2000 modle? And will there be any issues if I do,,,they both look the same. Thanks
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