Question about 1998 Ford Escort

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When a start my escort 1600 up when cold for the first 3/4 mins the engine seems to be idling at 2500revs but then it goes back down to about 1000revs when warmed up, ive changed the sparkplugs and leads as i was told it may be this??but its still the same. anyone with an idea what it may be please????? thanks....... kev.b.

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When the vehicle is cold the computer bumps up the injector pulse till the engine is warmed up but if it is doing this more than usual it could be either your thermostat is stuck open or you have a bad temp sensor the resistance in the sensor could change over time and cause this condition and if the thermostat is stuck open it will take longer for the vehicle to warm up.

Posted on May 11, 2009

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