89 rough idle
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89 rough idle
I have a 89 f150 5.0 2wd m50d. When i start it it tends to idle high (couldn't tell you by how much, no tach) but then after a min or two it drops down to normal rpm, then when i start driving it jumps back up, even in between shifts. I assumed it was my idle air control valve/motor whatever you want to call it, i have been kinda putting it off because its like $80, i pulled the codes earlier today and it gave me an 11 11 on my koeo, then a 33 and a 43 from my continuous memory (which mean EGR Valve open/not detected and PFE or EVP circuit has intermittently failed above the closed limit of .67 volts) Would either one of these cause my idling problem? sorry for the long post. thanks for your help
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