Question about 1992 Chevrolet Cavalier

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My 92 RS Cavalier is loosing water fast/overheating/ heater fan does not blow and I am not sure what parts I will need for the fix..... just the pump or the hoses and clamps. Also are these two problems linked? I have a 3.1 FI 6 cylinder

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If the hoses, radiator, thermostat,radiator, and water pump are working properly and the overheating is being caused by the cooling fan not operating, then I would check the relay for the cooling fan with a multimeter. If it is ok, I would look at the coolant temperature sensor. Hope this helped.

Posted on Jul 16, 2009

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Water from the radiator comes out of the water holder what do i do

Posted on Aug 07, 2012

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Few days ago cavalier decided to empty coolant out of its tank and overheat. we since then took compressor off serpentine belt changed thermostat checked oil for water flushed system checked fan heater...


Water pump. The impeller can come loose from the shaft and not circulate enough coolant. These can throw you off, because when you remove the pump the impeller will be tight against the shaft. It is when they warm up they begin to slip. If the heater core is not leaking don't bypass it.

Aug 17, 2011 | 1997 Chevrolet Cavalier

3 Answers

Overheating radiator without leakage


I posted this in a different web sight I hope it helps.


Re: Overheating and blowing cold air
I have been a mechanic for 20 years. Your problem is the heater core is plugged. The cold water from the radiator blows directly at the thermostat keeping it closed even when you are overheating! BAD DESIGN!! If you look at the water flow charts in AllData you will understand. If you rev the motor to 3,000 rpm's the turbulent HOT water at the water pump impeller (near the thermostat) will reach the thermostat to open it and the car's temp will fall very fast to the correct temperature. If you remove the thermostat it will not overheat but will run way to cold. If you bypass (loop) the heater core it will not over heat.

The hot water that leaves the heater core returns to the engine at the thermostat. It is the only hot water introduced to the thermostat to keep it open and allow the water to flow from and to the radiator. I normally just back wash the heater core and get large chunks of rust flake out then its fixed. Back wash then froward wash repeatedly many times. Also flush out the motor so you don't re plug the heater core. I hope you have now blown the head gaskets or cracked a head yet. Make sure to run the proper coolant in the car so you don't promote more rust flakes. And bleed the air out as mentioned in detail by other posters.

Nobody knows this little secret. Not even Subaru mechanics at the dealer, no TSB (Technical Service Bulletins a special note after the fact to mechanics). After days and days of trouble shooting a 1993 Subaru Impreza (2.0?) I looked at the water flow chart and then it was clear what was happening. This phantom overheating problem stumps the best mechanics and sends many Subarus to the crusher.

http://www.subaruoutback.org/forums/...threadid=17264

Jan 16, 2010 | 1990 Subaru Legacy

2 Answers

Overheating had new radiator, water pump,thermostat, &heat sending unitHELP!!!!!!!!!!!!!!


Has anyone looked at the a/c condenser to make sure it's not plugged up with leaves, bugs etc? Does the heater blow hot? and, stupid to ask but is the thermostat installed with the spring end towards the engine and does it overheat without the t stat? On the stupid question line again, if the pump is belt driven, is it turning in the right direction (on some cars, if the belt is on wrong it is possible)

Dec 04, 2009 | 1998 Chevrolet Cavalier

1 Answer

My dodge dakota doesn't blow hot air at all. i have replaced the thermostat, water pump, fan, and fan clutch. i had problems with it over heating i've fixed that problem but now living in CO. I don't have...


May be a plugged heater core. OR Someone removed your thermostat to cure you overheating problem. Remove heater hoses , (in and out hoses) leading to and from heater core and try to blow through it. DO NOT clean out using more than 16 p.s.i. as this will burst you heater core.Also check to be sure heater flap is opering to let heated air into cab.

Nov 29, 2009 | 1998 Dodge Dakota

2 Answers

The car over heats in a matter of minutes. We put a new water pump on but we need to know where the fans sensors are? Cn you help?


If it's overheating in a matter of minutes from cold, it is probably not the fan or fan switches. If the gauge goes up that fast, it is often because of air in the system. When hot air hits a water sensor, the gauge will skyrocket. make sure the radiator is full and open any bleeders in the cooling system (if it has any) to purge all of the air out. Also, try turning on the air conditioner -- that should start the cooling fan -- to see if that makes a difference. One more thing: just because a part is new, don't assume it's good. I once saw a car overheating with no heat and a full radiator (classic water pump) with a new water pump on it. We took it off and realized the impellor (blades) was loose on the shaft! Good luck.

Nov 20, 2009 | 1997 Dodge Intrepid

1 Answer

My 92 Ford Explorer just started over heating.........Just put new radiator in it because it was leaking........after radiator got put in overheated again..........we think it is air locked.took the...


If the cooling system has no bleeder valves to vent air, you may have to temporarily loosen a heater hose to get all the air out of the system...Also check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem..Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Apr 18, 2009 | Ford Explorer Cars & Trucks

5 Answers

Replaced waterpump, still overheating lights comes on


Check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem..Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Mar 18, 2009 | 2005 Chevrolet Impala

2 Answers

Overheating


Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Feb 25, 2009 | 1994 BMW 3 Series

1 Answer

1990 ford ranger is overheating


If the cooling system has no bleeder valves to vent air, you may have to temporarily loosen a heater hose to get all the air out of the system...Also check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem....Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Oct 20, 2008 | 1998 Oldsmobile Bravada

1 Answer

Overheating


Check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem..Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Aug 06, 2008 | 1998 Plymouth Breeze

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