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Engine races on startup

11-09-2005, 10:54 PM
I have a 93 aerostar with a 3.0 liter.Opon start-ups the engine goes into a high rev for about 5 minutes and slowly comes down to idle speed.I have changed the idle sensor and air flow sensors and it is still the same.If anybody knows about this please let me know what it is,i can't afford the gas it is burning.

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