Hello, my 1994 Camry LE V6 just started overheating recently. Water seems to constantly evaporate from the coolant tank, but shows no signs of leakage. Also, the engine oil appears fine, not cloudy or milky. Yesterday, the car made a whining, whirring sound after overheating fairly quickly, lost power and acceleration, and then died on the freeway. Steam or smoke came from the engine, but not from the exhaust. I thought for sure that I had a blown head gasket. However, after getting towed home, the car somehow started up again fine today. I am very confused! Would a blown head gasket prevent the car from starting up at all? Could there be another issue such as a belt or radiator that would cause overheating and loss of power, instead of the head gasket? I am afraid to drive the car again on the freeway because I do not want to be stranded again from overheating. Can around-town driving be feasible for now due to less strain on the temperature? I cannot afford a new car or repairs to fix the head gasket either. Thank you for any help!!
It is best to be systematic about this. It could be either the water loss or the overheating which is the basic cause, either one could come first.
- there is a test for combustion gases in the water jacket, from a blown head gasket. This will very quickly cause overheating, and the excess pressure will blow the water out the overflow reservoir. If the car has already overheated and died, this is unfortunately quite likely
http://www.youtube.com/watch?v=1_SIwHMLmkM
- the temperature sensor in the block may have failed. This will prevent the fans from running when the engine overheats, and you can see this. The fans are not driven by a belt. P68....
http://www.turboninjas.com/camry/eg2.pdf
- the thermostat may have stuck closed. You will have to get it out and test it, but this is not difficult. See p328
http://www.turboninjas.com/camry/eg2.pdf
- this model of Camry has a plastic top tank to the radiator, which eventually cracks. Look there carefully.
- it may be that a radiator hose has gone soft and closed up. Check they are allowing good coolant flow.
- it could be that in a car this age that the radiator has silted up and is not allowing coolant through. Disconnect the top and bottom radiator hoses, when cool, and run water through from a garden hose to get some idea about that.
SOURCE: 1993 Toyota Camry V6: Engine Overheating Prob
Yes if it hydraulically operated it could be because the pump for the fan is bad. If I am not mistaken the fan is run off of the power steering pump correct. check and make sure the pump is working correctly. I have not seen a hydraulic motor on a car I know they put them on a lot of diesel trucks like humvees and some Chevy diesels but not on a car. Most are usually electrical. I know on humvees with a hydraulic fan they have a fan controller check this and make sure it is working right you can unplug the controller and the fan should stay ingaged and turn faster.
SOURCE: 1993 Toyota Camry V6: Coolant Overheating Problem.
how do u change the water pump in a 1993 toyota camry v6 engine?
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Thank you so much for your very thorough reply!! This information is exceptionally helpful and gives me a starting point. Do you think I can drive the car around town, since the engine does not overheat during around town driving (under 45 mph)?
Yes you can drive around, watching for overheating.
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