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Old 08-19-2005, 01:37 PM
2000CAYukon 2000CAYukon is offline
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Re: Re: 1990 truck won't idel when cold

Quote:
Originally Posted by rpreston
Could also be a bad coolant temperture sensor.
That is exactly what I was thinking. If you disconnect it and the truck idles cold, then the sensor is bad.

By disconnecting it, the PCM will think the engine is real cold.

//2000CAYukon
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