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RPM fluctuation issues

81 Views 0 Replies 1 Participant Last post by  Mueed
bentley continental R 1998 - had its ECU recently replaced by and the car was finally after 5 months up and running , but from 2-3 days engine RPM is fluctuating a lot after a few mins of ignition. what should we be looking at for a fix? engine timing sensor and fuel filter were replaced earlier too. much thanks!
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