1994 Ford Astrostar van

Asked by Mar 17, 2013 at 01:10 PM about the Ford Aerostar

Question type: Maintenance & Repair

The engine when running surges high and low. What could be the prob? The vehicle has been sitting for over a year.

2 Answers

could be a vacuum leak, of course, but the controls that regulate idle speed would no something was wrong...connect your diagnostic tool (about 40 bucks for one of these) and reveal what's goin' down in this town.

100,045

After sitting a year, it could be many things. Gaskets and seal are dry. Electrical connections are corroded. Gas is old. Squirrels have been chewing the wires. Chipmunks made nests in the air cleaner. Get it up to temperature, run it on the road, refill the gas tank, step on the gas a few times, replace the filters, etc.

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