Idle Issue
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Idle Issue
I have a 2002 F150 2wd with the 4.6. Past week or so the idle has been running between 50-100 higher than usual and when the heater is on and the engine is sitting at a stop or in park, surges up 200 rpm every so often (sounds like something clicks then rpms got up). Not quite sure what it is. I took the IAC off last week and cleaned it (it was very dirty) but it did not seem to make a difference. Thanks in advance for any help you can provide.
UPDATE - Bought new IAC no difference. still running high
UPDATE - Bought new IAC no difference. still running high
Last edited by coopstar55; Nov 30, 2009 at 07:05 PM. Reason: bought new iac no change
budget is getting low
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I looked at the lines today in the sun and the only one that looks at all questionable is the line that comes out of the top of the throttle body and connects to something on the drivers side firewall. The line there says gas on it but it is the only one that looks old and where it attaches to the part on the firewall the connection is a bit loose. Do you know what that line is and what it is going to on the firewall? thanks
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