Vacuum leak I think.
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Joined: Nov 2024
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From: Murfreesboro Tn
Vacuum leak I think.
So I just replaced the crankshaft position sensor, and took out the IAC to look at it, And I now have a high pitch whistle almost and my truck is running really rough. It's hunting RPMs violently hopping up and down on the gauge. Any ideas where I should start
