ENG ROUGH W/AC

2006 Hummer H3

Tiny

djase

July, 21, 2010 AT 10:56 AM

Engine Cooling problem
2006 Hummer H3 V8 Four Wheel Drive Automatic 118000 miles

My 06 Hummer H3 suddenly began missing running extremely roughly especially when the AC is on. I did get some suspicious fuel so have some concern that it is bad fuel in the system. The engine light is coming on. What should I do? Fuel filter? Injectors? Plugs? HELP? Thanks in advance.

FOUND 2468 RELATED QUESTIONS

A/c

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Air Conditioning

12 ANSWERS

1 Answer

Tiny

factoryjack

August, 5, 2010 AT 10:55 PM

Have it checked for misfires, if it occurs mostly at idle, there may be issues with the cylinder head. There was valve issues in 2006.

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