Question about 2003 Ford Expedition
P0306 misfire 1st 1000 revs
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Posted on Jan 02, 2017
do a compression test, you may have a bend valve , I'm assuming its not getting overheating so I don't think its the head gasket..a compression test can give you the answer..hope this was very helpful...thanks
Posted on Aug 08, 2009
SOURCE: engine light code P1507:
P1507 is "Idle Air Control System Underspeed Error". This code indicates a problem with the Idle Air Control (IAC) valve assembly, harness wiring for the IAC or the Powertrain Control Module. So checking the IAC next is the most logical step.
Posted on Oct 07, 2009
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