1999 Nissan Sentra GXE

Asked by Karen Jan 19, 2020 at 07:22 PM

Question type: Maintenance & Repair

Car idle goes up and down.

2 Answers
101,595

KenF answered 4 years ago

Check intake air sensor as well. Idling "up and down" may mean a sensor input is constantly changing or off or there is unmetered air getting into the engine (via vacuum leak).

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