High Idle Problem
08-14-2005, 05:33 AM
#1
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Join Date: Aug 2005
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Posts: 29
High Idle Problem
I recently installed a '99 Explorer intake on my 5.0 and I now have an idle problem. After hard excelleration it will not come back down to an idle, it stays around 2k rpm. I can unplug the IAC and it will idle back down to normal, but when I plug it back in it jumps back up to 2k. I have replaced the IAC assembly, I installed a new computer, I installed a new throttle body, and I have a spacer block between the IAC and throttle body for more precise idle adjustment, but I still have the same problem. Anyone ever have this type of problem or have any tips?
08-14-2005, 03:53 PM
#3
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RE: High Idle Problem
ORIGINAL: Quik
check your salt/pepper shakers. also od a search and look for where i spoke about fixing the idle
check your salt/pepper shakers. also od a search and look for where i spoke about fixing the idle
08-14-2005, 04:06 PM
#4
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Join Date: Jul 2005
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RE: High Idle Problem
i have the same problem and have been trying to fix it for a while now. i found the vacuum line to the MAP sensor was sucking flat at idle, and now that i fixed that the problem seems to have went away. what year is your 5.0. if its not a MAF car look at the map sensor vacuum line. check for vacuum leaks around the intake, TB, and spacer.
08-14-2005, 04:44 PM
#5
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RE: High Idle Problem
ORIGINAL: wildstang87
i have the same problem and have been trying to fix it for a while now. i found the vacuum line to the MAP sensor was sucking flat at idle, and now that i fixed that the problem seems to have went away. what year is your 5.0. if its not a MAF car look at the map sensor vacuum line. check for vacuum leaks around the intake, TB, and spacer.
i have the same problem and have been trying to fix it for a while now. i found the vacuum line to the MAP sensor was sucking flat at idle, and now that i fixed that the problem seems to have went away. what year is your 5.0. if its not a MAF car look at the map sensor vacuum line. check for vacuum leaks around the intake, TB, and spacer.
08-14-2005, 11:58 PM
#9
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Join Date: Nov 2004
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Posts: 547
RE: High Idle Problem
Check to see if the spring under ur throttle body(it makes the throttle door open and shut) is hitting the valve covers...that gave me a HIGH idle cuz the throttle was stuck semi-open from rubbing on the covers. Check that.
08-14-2005, 11:58 PM
#10
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Join Date: Jul 2005
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Posts: 466
RE: High Idle Problem
well, i thought my problem was fixed, on the way back from the bar tonight it did it again after racing some kid in a mazda, oh well, i guess i will be on the search again. by the way, my driveability got alot better after cleaning the S&P shakers but it didnt help the idle. these old EFIs are just very sensitive, any little thing can make them go nuts.