powere issues

Asked by Smooth Aug 17, 2018 at 10:25 AM about the 2003 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

replaced battery and alternator car still cuts off when idling

1 Answer
102,905

KenF answered 6 years ago

Give it a tune up, check for vacuum leaks, clean throttle body and clean or replace filters. The intake air control valve governs air supply to engine when at idle, take a look at that, too.

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