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Registered
Join Date: Jan 2020
Posts: 2
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04 ZHP, RPM drops below idle when stopped
Hello gents!
I started to notice a week ago that my RPM dropping below idle occasionally when stopped at a light. it usually does it ones per complete drive. no check engine light. I was wondering if either the DISA valve or CCV that is causing this issue. the following jobs have been done on this 98K vehicle: full cooling system refresh (thermostat, expansion tank and hoses) valve cover gasket Spark plugs ECU reflash @ BMW dealer Thank you in advance! |
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