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Have a 98 sonoma rough idle poor acceleration and flashing engine light

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HAVE VECHICLE SCANNED.AT AUTO ZONE THEY WILL DO IT FREE.SOUND LIKE FAULTY TPS SENSOR,FAULTY EGR VALVE OR O2 SENSOR.MANY THINGS WILL CAUSE ROUGH IDLING LEAN MISFIRE CAUSED BY VACUUM LEAK PVC VALVE OR INTAKE.CLOGGED FUEL FILTER,DIRTY FUEL INJECTORS.GETTING CAR SCANNED WILL SAVE YOU TIME AND MONEY.

Posted on Sep 27, 2010

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Posted on Jan 02, 2017

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Idle rough no acceleration


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My 2001 GMC Sonoma is idling rough, starts hard but when accelerates sounds good. I have replaced the fuel pump, fuel filter, and now all the plugs and wires, but still rough?


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1 Answer

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