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My radiator light keeps coming on - 1998 Cadillac Catera

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General motors uses a level sensor of some type to watch the level in the cooling system . if the cooling system is not low . then i would suspect this sensor is faulty . it could be mounted in the radiator or in the radiator plastic tank . check with your local parts store to see if its available after market this would save you some money .if not its off to the dealer for the part .

Posted on Mar 16, 2011


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2003 alero coolant light keeps coming on i refill and drive a couple of miles and it comes right back on Then it might go off as the temp rises. Might i need to replace the radiator or thermostat? M

let it cool,then take the cap off of the radiator,fill with antifreeze,run motor with cap off for 1 minute,shut off fill with anti freeze and put cover back on,if you continue having problems,replace the thermostat,if you have to keep refilling it,then you have a leak,check your radiator ,hoses and pump for leakage

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Why is my add coolant light on

your coolant light is on because there is not enough coolant in the radiator. When the coolant is hot it expands and the excess water is pushed out into the reservoir and as it cools down the water is sucked back in and so keeps the top tank of the radiator full. However if you have a leak or a faulty radiator cap the water comes out ok but instead of sucking back in water it allows air in instead. Therefore you have a one way circuit of water out but no water back in. Your coolant light is telling you to check out the fault before you over heat the engine

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95 olds aurora running hot on freeway mostly oil light keeps coming on but oil never shows It's low. Check engine light on & it keeps saying engine hot....a/c off. Got new radiator thermostat...

Check themostat it ususally is located where the hose from top of radiator goe onto motor. Oil pump inside oil pan may be bad.
water pump may not be working

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1 Answer

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Change the fan relay in the fuse box under the hood. There are 2 one for air condioner on and one for temp sensor.

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1 Answer

My radiator light keeps coming on.. I have change water heater, thermal pump,all hoses, and radiator.. but keep have to fill up coolant

If there is no obvious external coolant leak, the coolant is being burned in the engine and going out the exhaust pipe.
You could have a leaking head gasket.

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1 Answer

My car keeps heating up and the check gage light comes on

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if its a headgasket you would have white/blueish tint smoke coming out, is there any smoke?

the check engine light is basically your throwing a code somewhere in the car.

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1 Answer

A red light with a circle and 3 small peaks within the circle come on, what does this mean?

Probably coolant temp light. When vehicle has cooled overnight, check the coolant level in the radiator. Very difficult to open radiator cap on this vehicle, because engine brace is in they way. You don't want to keep driving with this light on on, could do damage to engine.

Oct 01, 2009 | 2003 Pontiac Montana

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Radiator warning light

Check your over flow canister.Sometimes if it is a little low it will make the light flash or come on.When the motor cools off Try topping it off with some coolant.If level is at or above operating level the the sensor itself might be sticking or you may have some air pockets in the system.You can also tap on the sensor which should be the only one on the radiator tank,(a two wire sensor) that may be sticking..If it still keeps coming on you may need to change that sensor..

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I have a 1998 chevy caviliar and this light keeps coming. it has a arrow with water underneith what is that


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