Questions & Answers for: trailblazer running rough

...trailblazer has rough idle My 2002 Chevy Trailblazer idles rough and is slugish when pulling out. The vehicle runs fine when moving but when I stop at a red light or stop sign it idles rough. I have ...

...Trailblazer with 4200 vortec engine. Runs rough at idle and slow with acceleration. Had Check Engine Soon Light with P0301 code.Had O2 sensor changed, throttle plate cleaned and spark plug wires ...

...TRAILBLAZER HAS STARTED TO RUN ROUGH ENGINE BOUNCING SLIGHTLY WHEN I STOP AND COMPRESSION IS DOWN.ENGINE LIGHT IS ON BUT SOMETIMES IT RUNS SMOOTH AND THEN GOES BACK TO RUNNING ROUGH Have the codes ...

...TRAILBLAZER 4.2 LTR CHANGED PLUGS, COIL PACKS ARE GOOD, GOOD AIR FILTER, RUNS SMOOTH AT IDLE, BUT WHEN PUT INTO DRIVE RUNS ROUGH, AND STARTS TO STALL OUT HELP PLS Throttle body needs to be

Trailblazer 6 cyl The catalytic converter is running properly code has been on and now after a bad batch of gas the engine is running very rough and a new code popped up cyl 2 misfiring. I changed the

where to locate idle air control on 2006 4.2 trailblazer I have a 2008 Chevy trailblazer. Hard time cranking then runs really rough. And my r p m gauge drops after running a minute and loses power

trailblazer is running rough so i changed the plugs and it is still rough. like it is missing or a fuel injector is clogged. The fuel mileage is also suffering. But there is no code for a problem best

trailblazer and we have just replaced 4 coil packs, and also a cam position sensor. When I start it in the morning it runs extremely rough. It sounds like a cylinder is misfiring. Upon take off it has

...trailblazer the check engine light has been on since I have owned roughly 3 years but now sometimes stars flashing then stops after a while also running rough Engine misfire ! Flashing check engine ...

...trailblazer stalls and runs rough after warmup is at nornal temp, let cool and will start but run rough code 0300, new plugs, coil pk, map sensor, cam sensor, and 55lb fuel pressure The basics for ...