Question about 2005 Chevrolet TrailBlazer

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Have a 2005 trailblazer,it started acting up by not wanting to run good while taking off or going up hills.put it on code reader it told me that it was cylinder 1 misfire,I changed the plug and the cylinder and it still didnt fix it.so I tried changing the fuel pump and that didnt fix it and the code reader then told me ramdom cylinder misfire..so we changed all the spark plugs...it seem to help the problem but now it wont idle it dies everytime you go to drive it...do you have any ideas?

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Could be plugged catalytic converter

Posted on Jul 16, 2009

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Try the catalytic converter. I have the same problem and that's what i'm changing next.

Posted on Jul 04, 2009

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Jun 01, 2014 | 2004 Chevrolet TrailBlazer

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I know something in my 2004 Chevy Trailblazer is drawing power from my battery when the engine is shut off. I took it to Auto zone for a diagnostic and the was told I had a code he had never seen before...


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1 Answer

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Take it to a different autoparts store and bring pen and paper. Write down codes. You can use search on browser and key in "Mercury code xxx" xxx means whatever number you are told by autoparts. Internet explorer will pull up code. Chances are the second autoparts store may be more knowledgable.

Your cold start circuit is not working and your friend may be right about coolant sensor. Also, the reader Advance used will not reprogram your car. It only reads problem so you have to change physical parts yourself.

Good Luck Joe

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