Question about 1993 Chevrolet Corvette

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My 1993 corvette over heats at every stop and in slow traffic iam affraid to drive any where fear of my car over heating

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This could be cause by a variety of problems such as low coolant, bad water pump, head gasket leak, manifold leak, malfunctioning fan clutch, broken electric fan, etc etc.

If you have an electric fan, it is designed to turn on triggered by a temperature sensor located near your top rad hose mounting on the intake manifold. If this sensor is broke you will over heat without the fan kicking in at stops. Same with a clutched fan. Could be not moving enough air at a stop.

Check your coolant levels and let your vehicle run while watching to be sure your fan kicks in. Keep your fingers away from it while running. It can start up anytime. If all is well, you may have a plugged rad or restricted rad.

Posted on Jun 30, 2009

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1 Answer

What causes the 2006 Nissan Serena to be constantly over heating. After two overall complete rebuild done to the engine b4 I replace it with a fearly new one. And still have the same over heating prb


could be a number of reasons for the problem
If you can comment again or reply stating exactly when the engine is over heating (conditions of driving , stopped at lights , slow moving traffic , fan hub or electric fans etc) then we may be able to pinpoint the fault.

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Coolant gauge rising at or above 240 degrees in stop and go traffic


be sure to see if you may be a little low on your coolant but if that's all its doing feel good but your temp in your car shouldn,t go up all that much once it get to its running tempiture so keep a mental an physical eye on it but if it keeps going up an down specially when you give it gas an it goes up and down when you let off the gas you could have a problem

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1 Answer

No heat when stopped for traffic


1-your thermostate is stuck open half way. thermostate is a simple device that made of enlarging metals when heat is applied. it suposed to be in close position to allow engine heat up, when specified temp reached it opens and let it flow and radiator tries to keep coolant cool.when it is broken it stucks or it acts slow or it wont acts at all. in your situation it is stuck open half way. it allows enough water to be heated but flow is limited to heat cabin heater.

2-if there are cabin heater selenoid/selenoids for two different temperature for cabin left and right, on some instance those selenoid valves to adjust cabin heater stuck open or closed like thermostate acts on first case. so heat is not enough to heat up cabin heater.

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1 Answer

Over heating


If your vehical is over heating at idea it is most likely the radiator fan
this can be checked by running the car until it heats up and looking at the fan to see if it is running.
This usually isn't an issue as long as you are driving, but when you stop or driving slow or in traffic it will start heating up quickly. your fan keeps air flow going through the engine while at a stop to help cool down the engine compartment and pull.push air through the radiator

If you still over heat no matter if your driving or stopped it may be a thermostatic radiator valve that went bad. this is a release valve between the radiator and the engine that helps control the coolent flow between the engine and radiator and control how much heat is taken out of the engine to be cooled in the radiator.

So, run the car and see if the radiator fan kicks on. if it does, it's probably not a bad fan. if your car starts over heating and the fan never comes on it's most likely some problem with the fan

if it is turning and you are still having problems overheating go buy a new valve and change it out. cost you at most 5 bucks for a new one (probably less)

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1 Answer

Over heats at adle 1993 corvette where are fuses for the cooling fan in my 1993 corvett


The cooling fan relays are located on the upper radiator support in front of the left front wheelhouse.

you have 2 relays for your fan, primary and secondary
their controled by the PCM according to the temperature

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1 Answer

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Check your thermostat. To see if it opens when hot. From cold drop the thermostat in hot water, if it opens it is alright.

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