Posted: Fri Nov 09, 2012 4:52 pm Post subject: engine sputtering,revving up and down
When it up shifts and the rpms go down to around 1500 all of a sudden the rpms go up and down and the car bucks with it. Replaced the maf sensor a few months ago cuz it kept stalling, replaced plugs and wires last night but no change. Also have a bad burning plastic smell mostly during city driving for roughly a year now and smoke coming from under the hood. Figured it was oil burning from seepage out the valve cover but after replacing the plug wires it really smelled like plastic burning worse. Any ideas? Its not throwing any codes. 183,000 miles on it with 3800 engine. Thanks in advance!
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