Recent content by JL232

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    Changed intake manifold gaskets - now cyl 1 misfires

    Hello, I've got a problem w/ my 1999 Tahoe (gasoline, 2WD, 105K miles). I just changed the intake manifold gaskets and now I have 2 problems: 1. Engine idles fast, ~1300 RPM. Code P0507 - Idle Air Control system RPM higher than expected 2. Misfire cylinder 1 - Code 0301 I have...
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