For about a month now I have been experiencing a rough idle where the rpms consistently go up and down between 700 and 800 rpm. This only happens in drive with the brakes pressed. This also goes away if I shift the gear selector to manual mode. No check engine light. Car is 2011 LS with 1.8 LUW engine and automatic trans. Any ideas on this would be greatly appreciated.
Rough/fluctuating idle only in drive while brakes depressed.
Snappa
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Crawl under your car with a hammer and tap your cat and listen for “sand”, from past experiences with other cars when the cat starts clog it starts to bog things down, with a load things bog down. It could also be an intake man. or maf sensor going out but those usually throw out a code
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