Question about Chevrolet TrailBlazer

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I can start the trailblazer fine but sometimes when its idiling are sitting in drive at a stop sign it loses power and sometimes shuts off if i dont keep the gas on just put on new altenator

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  • bobbynme18 Feb 05, 2010

    its a 2004 with a 6cyl engine it has a 110,000 miles no other stuff was done to the engine it dont do this all the time

  • bobbynme18 Feb 05, 2010

    also no check engine lights come on lights dim in the battery voltage goes down to about nine

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How many miles are on this vehicle? Was there any other work done to the engine before the alternator replacement? Are there any lights that come on, such as check engine??? Also, what year is the vehicle and engine size?

Posted on Feb 05, 2010

  • GetMeOttaHere Feb 05, 2010

    Ok, you need to plug the spark plugs and inspect them and possibly replace them if this was never done. Also, you can purchase a can of Intake fuel injection cleaner and spray out the throttle body, the throttle body is most likely gummed up. If this does not correct the problem, you will need to check your fuel pressure with a fuel pressure gauge. Was the fuel filter changed, if so when. How long have you owned the vehicle?? Why was the alternator replaced?? How old is the battery??? Sorry for all the questions, but I have to know where we stand. Thanks.

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