Question about 1991 Toyota Camry

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Over heating 91camry

Cooling fans do not come on even with the radiator boiling away there are several fuses that say fan but which would it be I would think w/ 2 fans they would be on separate circuits i just replaced the radiator and they (fans)were working then ...help please ???

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Reverse the two plugs you disconnected to replace radiator............Check to make sure that the thermostatic wires coming from the raditor to the fan motors are hooked up and tight. Good luck

Posted on Feb 27, 2009

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Losing coolant, over heating but no visible external leaking


Hi Dawn it could be the thermostat sticking a quick enough fix. If not this the head gasket might be gone or even a crack in the head. Regards Jim...

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My407 rad keeps boiling in traffic any ideas


There a several reasons why an engine over heats; Low coolant level in the radiator; stuck thermostat, bad water pump, cooling fans that are not working properly. clogged radiator. All of these possible faults need to eliminated one by one.

Jun 11, 2014 | 2005 Peugeot 405

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The car was overheating i checked all hoses and replaced the thermostat the radiator it still is ovrheating and the water is boiling in the overflow tank


Answer could be a faulty thermostat,or it could be a sign that your head gasket is about to blow ,or last of all your timing could be out of sync.

Answer 2 from Inventus: It means your cooling system is funtioning properly. In a system having a coolant recovery tank, coolant in the radiator is always up to the brim, hot or cold. There is negligible or no air space. When coolant in the radiator expands sufficiently due to warming from the engine, it will squeeze past the pressure cap's bottom seal and flow into the recovery tank. (If no provision for such expansion was present, the expansion would rupture the radiator or your hoses.) Only coolant within the radiator is under pressure, and because of this pressure (together with the elevated boiling point that the "anti-freeze" permits), it normally does not boil. But once past the pressure cap's bottom seal, the overflow is at atmospheric pressure and therefore boils.
This boiling is usually unnoticed after a short, i.e., local, trip because the cooler coolant already in the recovery tank quenches it. But after some highway driving the influx of more hot overflow heats up all the coolant in the recovery tank to the (unpressurized, i.e., "natural") boiling point.
As the engine cools when shut off, the contracting coolant in the radiator sucks back coolant from the recovery tank. Fluid in the recovery tank should never be below the "full hot" or "full cold" marks, lest air be sucked in.
-- BETTER ANSWER ==
Your cooling fans are not turning on. It is not normal for your overflow tank to boil like that. It is true that your radiator is overflowing into the reserve tank, but that means yourr adiaotor is boiling. Check for blown fuses or relays for your cooling fans. IF theya re fine. run your engine for about 15 minutes and drive. When you temp level is at normal operating temp open your hood with the engine runing and see if your fans are on. If they are, then you may have a bad thermostat or a plugged radiator, or a bad water pump. If the fans are not on, get your cooling fan switch replaced if your car has one. Check your temp sending sensor

Oct 30, 2011 | Cars & Trucks

1 Answer

MY 97 kia sportage was over heating alot the thermostat was changed and the radiator flushed it still smells hot so i run the heat in just in case it has not over heated again but the smell bothers me ....


The "smell" is probably old coolant splashed in and around the engine, and radiator fins. When this residue gets hot it really stinks. Try rinsing out the engine compartment and radiator fins with low pressure water. It will go away.

OVERHEATING

Physically look in the radiator under the cap when cool, for coolant level, and check the valve in the cap for sticking. If air is present in the radiator it can't get out, and more coolant can't get in,(from the overflow). Either clean the cap or replace it and check that it is the CORRECT cap.
Radiator fins dirty, clean with a strong stream of water, not high pressure water.
Radiator clogged, have it boiled out, or replace.
Thermostat stuck open or shut, replace it.
Water pump worn out, can no longer move enough coolant, replace it.
Fan shroud broken or missing....
Electric Fan(s) not working, Check the fan, relay, fuse and engine temperature sensor's.
Belt driven fan, belt slipping, fan clutch is bad, fan blades have flattened out.

Air dam under front bumper is gone, loose, or broken. It actually has a purpose other than scraping on the driveway or curbs. It forces air up into and thru the condenser and radiator. If it's loose, airflow can actually push it out of place making it useless or blocking the airflow. Along with that, there may also be a plastic piece attached to the bottom of, and wraps up behind the bumper. If it's loose, airflow can actually push it out of place blocking the airflow. Simply reattach it with 4 or 5 screws.

Also, if the vehicle has A/C and electric fans, one fan is dedicated to the A/C and should come on almost the instant the A/C is turned on. The engine fan will run even with the key off, that is normal. The system is trying to cool itself. Hope this helps.

Aug 25, 2011 | 2000 Kia Sportage

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I own a 1990 Chevy Lumina car. I had a new radiator put in it. Then I replaced the jhoses, water pump and thermastat. After refilling the system, I ran the motor for 7-8 minutes idling, then I ran it at...


It could be the fan temp. switch but it shouldn't have been boiling in the overflow tank. I'd recommend doing a compression test to see if you have a blown head gasket. If it's a blown head gasket, the compressed air/fuel mix being force into the cooling system could well look like boiling in the over flow tank.

Jun 26, 2010 | 1990 Chevrolet Lumina

1 Answer

1996 toyota hiace disel engine. it overheating I inspected the hoses, radiator,water pump, to see if any water coming out but non, expect the recovery bottle outlet hose, water comeing out of it. it run...


if the water in your radiator or reservoir is boiling means your cars engine auxilliary cooling fan is not perfectly working enough to dissipate heat inside the radiator( heat exchanger) check cooling fan if its silicone oil filled if its rotating free and no resistance then remove fan and refill silicone oil/ if its equiped with electric fan then fan motor is busted

Apr 07, 2010 | Toyota Passenger Cars & Trucks

1 Answer

98 v6 mustang is over heating its not the thermostate or fan


Several things ... best guess, in order:
1. (very likely) Radiator fan is not blowing (turn on car and a/conditioner.
When compressor kicks in, the radiator fan must blow). If it ims not blowing,
the radiator fan motor may be burned out ($40).
2. Check / replace "cooling fan" fuse ($1) and / or "cooling fan" relay switch
($7).
3. Radiator clog (possible)
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Radiator boils over


There can be several causes, first replace the thermostat, radiator cap, also check to see if the cooling fans are working properly. They should automatically come on whenever the ac is on.

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1 Answer

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Hi
The thermostat could be stuck closed. It also could be the cooling fan motor
is burnt out causing fuse to burn out.

Apr 02, 2009 | 1999 Daewoo Lanos

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