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01-23-2012, 10:12 PM | #1 | |
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Join Date: Jan 2012
Location: Brookings, South Dakota
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99 Escort runs fine then dies
I have a 1999 ford escort 4 door sedan, when the car is cold I can get it to start and it will run just fine, after it starts to warm up, it starts to make a misfire/ sputtering noise when it is starting to die when idling. when I am driving it, there are no signs it is going to die.
I took it to the ford dealership today and they said that I need to replace the fuel pump, and the relay control module. I just replaced the fuel pump a week ago because I thought that was the problem. So I am thinking it is the Relay Control Module- only problem is I don't know where it is located can anyone tell me where it is? thank you |
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01-24-2012, 10:27 PM | #2 | |
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Join Date: Jan 2009
Location: Cincinnati, Ohio
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Re: 99 Escort runs fine then dies
I am no mechanic and of course have no access to the vehicle. But in a similar situation would investigate/eliminate the possibility of vacuum leak(s), Idle Air Control valve malfunction, and dirty Mass Air-Flow sensor.
Personally would not expect a fuel pump or regulator to cause the problem described, as an engine uses the greatest amount of fuel when cold. However, I suppose it's possible that the pump's motor has bad bearings and seizes as it heats up. To test this possibility, I would activate the pump relay, forcing it to stay on, heat up, prior to running the engine. Then I would start the engine (with a fuel pump gauge connected) to see whether it behaves similarly. With a stuttering engine, it's normal for the fuel pump to wane a little as available power fluctuates between available battery and alternator voltage(amp) levels. |
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