Question about 2010 Chevrolet HHR

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I have a flat spot at 3200-3500 rpms on 2.4 ectec do you have any cures

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Run the fault codes to check for possible sensor failures. this could be injector related but it will be difficult to find as the rpm range is only 300 rpms. This could equate to a down shift of the transmission as there is about 300rpm between ratios in the box.

Posted on Dec 15, 2014

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