My 95 Corsica is having issue moving air through the heating system. It seems like the fan that circulates the air may have died, as it had been making a squeaking noise for a few days, and the other day, the noise stopped, but not matter what I set the air flow to, regardless of AC/heat setting, no air would move. It worked again briefly yesterday, but has failed again today. Is it possible to fix this on my own, and if so, what is involved.
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Re: No air movement in heating system
It can be a little bit of a pain, but fairly simple. The blower motor is usually located on the passenger side, under the dash, and with a few pieces of interior parts taken out from underneath, you should be able to access the blower motor. They have three to four bolts holding them up. Of course you have to unplug the electrical, be sure not to rip them out. Suggestion on fixing it, go the the salvage yard and get one. You can cut the wires off the one at the salvage and put them on your battery terminals, being very careful, to see if it works. Then you can just unplug those wires and put your on back home. I do suggest that you clean the new one out, it should be really simple to do. Hope it helps.
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it indicates a failure of the cooling system fan ( if fitted)
coolant is cooled by air passing through the radiator so when riding the road speed provides the air flow and so the temp is normal but when stationary there is no air flow so the temp will rise
If there is a fan fitted the check the fan,fan relay or coolant sensor for correct operation
If not fitted then it could be considered normal as there is no air movement to do the cooling
The same thing happens when the engine is shut off as there is no coolant circulation there is still residual heat in the metal of the engine and so there will be a rise in temp as that heat moves to the coolant
talk with a service center and discuss what could be a normal temp rise when stationary to determine if you have a problem
u probably have air in system.need bleed air out,otherwise water wont circulate and fans will not work.check you thermostat(more likely not a problem).if that dont resolve problem,you need change water pump..let me know
Is the water pump impeller eaten away Thermostat somehow not in correctly Is there some type of electric circulating pump in system, as well as the mechanical one
Do a Cylinder Combustion Test on the rad filler opening There is a plastic container with blue fluid,if it turns yellow, you have combustion gases in the coolant & a head gasket or other issue,cracks,etc
if there is no thermostat in the engine and the cooling system is full and no air in the system then you could have a water pump impeller that is not circulating the coolant,a rad flow problem, or a head gasket problem.
might need to bleed heating system / radiator. Air lock could stop flow of hot water. Check water colour in radiator - if brown and gungy there could be a build up of sludge so radiator flush required.
when dial / lever moved to turn heat on / off see if you can hear anything moving - there should be! Quite often when heater turned on or off small solid wires move valves that are visible under dash and on engine bay firewall. Watch these rods when someone is turning the heater from cold to hot and see if anything is sticking or loose
Hi, Sounds like you have tried about everything. Ok the aux. coolant switch is for the electric pump for the heater core will notcause an over heating condition just a longer warm up of the heater core. Has the cooling system been bleed properly if there is a trapped air pocket it will not let coolant circulate. Was the new thermostat installed correctly? They have a vent that needs to be towards the top or they trap air on the back side and cant take an accurate reading to open and close. Other areas to look at would be proper operation of the fan clutch, if they fail they can cause the fan to not lock up properly and supply enough air movement through the radiator. The aux. electric fans and their temp switches do you hear them coming on are they coming on at the right temp.
um...strange ...engine temp reaches 210 before thermostat opens and lets water circulate ..fans go on before that normally..180 or so..hot air from heater going to cold air? strange...could you elaborate for me /us?