Question about 2002 Chevrolet TrailBlazer

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I own a Trailblazer 2002 and the engine light started flashing, so i stopped and scanned it. The scanner came up with multiple codes that was showing misfire in cylinder #5, and other codes referred to cam shaft positioning and throttle body. I have now replaced the coil pack for the misfire to cylinder #5, also replaced the cam shaft and cleaned the throttle body. I took the truck for a test drive and the light is on and runs rough still!! I have no idea where to go from here, does anyone know what my next step would be? Please HELP me figure this out.

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Its a high possibility that you could have a bad injector at your #5 cylinder.My suggestion would be to take your truck to a reputable service station and have them do an injector balance test this will tell you whether or not that cylinder has a bad injector.It could also be the throttle position sensor that could be bad.This sensor can also be tested but let a service station test it because all the electrical values are different for each vehicle.

Posted on Mar 13, 2011

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Posted on Jan 02, 2017

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