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The water light and check engine light came on in your mercury marquis 1998 and the water gauge went up when you turned on the air conditioner it went down but your check engine light is still on?
Wiki User
∙ 14y ago
it sounds like your primary coolant fan has quit and when you turn your A/C on it causes your secondary coolant fan to turn on and then cools the coolant in your radiator!
Wiki User
∙ 14y ago
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Bad door switch or bad headlight switch
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why 2003 ford focus stall when air conditioner is turned on
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Fuel pump will not run and engine will not start.
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The 1999 Saturn S-Series engine heats up the coolant, the thermostat valve opens and the coolant circulates between the radiator and the engine. Then the radiator fans turn on to cool it back down. The fans are also turned on when the air conditioner is turned on to aid in cooling the radiator and the air conditioner condensor.
Why would blower motor of air conditioner stay on in 1999 Chevrolet Express van when engine is turned off?
Blower fan relay is stuck or fused contacts, replace it
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because you have too many dead babies in your air conditioner tank
