I HAVE A COLORADO WITH , , 111,000 MILES. iT HAS BEEN KEPT UP, ONLYHAD IT 1 YR

55

Asked by May 04, 2015 at 12:03 AM about the 2012 Chevrolet Colorado LT1 Ext. Cab

Question type: Maintenance & Repair

1 YR, LAST SUMMER IT STARTED IDLING ROUGH THEM AT A STOP IT WOULD
JUMP A LITTLE , SO HAD THROTTLE BODY CLEANED, SPARK PLUGS
REPLACED, 2 NEW  COILS,AIR FILTER STILL NO CHANGE. WHEN THE ENGINE
LIGHT WOULD COME ON THE CODE SAID, AIR INJECTION VALVE
MALFUNCTION, SO HAD THAT ALL CHECKED OUT. AS WEATHER GOT COOLER
IT STOPPED. NOW ITS BACK AGAIN HAS NO POWER  WITH AC ON
ESPECIALLY WHEN ENYERING THE FRWY HAVE TO TURN AC OFF. WHAT IS
GOING ON?

3 Answers

69,305

Sounds like the engine needs a Motovac treatment. We use Colorados as delivery vehicles at my job. They sometimes develop a surging, rough idle condition. The Motovac treatment straightens them out. HTH. -Jim

3 of 3 people found this helpful.
Best Answer Mark helpful
55

Good to know, I use my Colorado to deliver parts in, so I drive a lot! I'll get that done and see if it helps, thank you

1 of 1 people found this helpful.
69,305

You're welcome. Glad to help. Thank you for the best answer click as well. -Jim

1 of 1 people found this helpful.

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