1988 Dodge Ram 98 1500 5 2 That Crank Morning Takes While Idle Get Low

1988 DODGE RAM
273,367 MILES
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I have a 98 dodge ram 1500 5.2 and the problem is that when I crank it up in the morning it takes a while for the idle to get low which causes the transmission to slip when is cold but once is warm it drives fine?
Oct 16, 2012 at 7:29 PM
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CARADIODOC
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Do you have an '88 or a '98? High idle speed won't cause a transmission to slip. Is the Check Engine light on? Have you checked for diagnostic fault codes?

Vacuum leaks are a common cause of high idle but if it goes away when the engine warms up, that suggests a coolant temperature sensor problem. That's not real common on Chrysler products.
Oct 17, 2012 at 2:13 AM
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