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Why does both cooling fans run at the same time on a 1987 cadillac deville?
Wiki User
∙ 15y ago
The cooling fans will run when there is a signal calling for them to come on. High temps will do that. Also anytime the ac is on, a fan will run. Try turning the ac off and see if one of the fans stop. Do this when the engine is cold. If the fans run anyway, check your fan relays, they may be stuck on.
Wiki User
∙ 15y ago
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the fan has a high amp draw roasting the control module replace them both!!
