on the freeway cruising 62mph, the car runs fine, however when I slow down the all hell breaks loose and the car overheats. In the the city, the car overheats after 30 minutes driving.
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1999 Cadillac DeVille Question: what causes the motor to overheat
pushrod November 17, 2012, 10:05Master
Best guess : radiator cooling fans are not working. Ram air at speed will cool rad. but at slower speed fans have to do it.
Answer #2your.mechanic November 18, 2012, 01:07Master
most likely the cooling fans or its circuit...this vehicle has a complicated cooling fan electric circuit.