E150 Idle troubles
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Freshman User
Joined: Mar 2004
Posts: 41
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From: WI
E150 Idle troubles
My 1990 E150 has a strange idle problem. It starts up fine.. seems to idle kinda high.. then slowly bogs down and after a minute or two dies unless I give it some gas. Anyone know what could be causing this?
Thanks
Thanks
Senior User
Joined: Jan 2004
Posts: 174
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From: Virginia Beach, VA
easy to replace if its the problem. Have you done a code scan yet? it will point out out of tolerance items. Group wisdom says its the IAC, but best to be sure.
I have not purchased one in awhile so I don't know the current costs.
I have not purchased one in awhile so I don't know the current costs.
Senior User
Joined: Dec 2003
Posts: 354
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From: Memphis, TN USA
IAC typically costs $29 or so and easy to replace. The problem you have might be the TPS which usually costs around $18.
You might want to just remove the IAC clean it and clean the inside where the IAC goes in the TB because it will be gunked up with carbon and put back the IAC and test it.
You might want to just remove the IAC clean it and clean the inside where the IAC goes in the TB because it will be gunked up with carbon and put back the IAC and test it.
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Freshman User
Joined: Mar 2004
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From: WI
Ok, is there any 'special procedure' that has to be taken as far as safety is concerned when removing this part? Or is it basically just unbolt - clean- rebolt ?
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High Idle
My 94 E150 5.8L Club Wagon has just started idling high. It starts up cold high, and stays high the whole time, probably 1500-2000 rpm or so. I found this post. The IAC looks easy to get to. There is no check engine light on, and other than the high idle, it runs fine. It has 96K miles. Should I just remove the IAC unit and clean it, or just get a new one and replace it? Any other things I should look for?
Chris
Chris
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Originally Posted by pfogle
I had the high idle problem, it was NOT my IAC it was the throttle position sensor.. The IAC was 80+ dollars, and the TPS was $35. (this was in summer of '02)
Chris
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Joined: Jun 2004
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I am having the same problem on a '91 E150 (5.0L V8). Already checked vacuum hoses and cleaned Idle Controller (has rubber ring gasket).
According to Haynes manual, the TPS is mounted under the throttle body. I can see something with wires attached to it in that place, but it looks like a real pain to get at. Any insights into this replacement procedure are appreciated.
Joe V.
According to Haynes manual, the TPS is mounted under the throttle body. I can see something with wires attached to it in that place, but it looks like a real pain to get at. Any insights into this replacement procedure are appreciated.
Joe V.