Question about 2002 Chevrolet TrailBlazer

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2002 Chevy Trailblazer 6 cyclinder engine (112,000 miles to date) choking up at idle (not stalling, yet), smell of surpur at tailpipe exhaust, computer code P1345 for the camshaft and chankshaft sensor (changed these) but still ruff idle. Factory analyst done next. Possible that timing is off?

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It sounds like your EGR valve needs to be replaced. You can go to any auto parts store and get one. Try replacing spark plugs and plug wires also. If the timing was off it would pick up speed slowly and would vibrate really bad at idle. When you go to accelerate if it doesn't accelerate normally it may be the timing but i highly dought it. Try plugs and wires first. then the EGR valve.

Posted on Sep 29, 2010

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