3rd & 4th Generation (1992–1996 & 1997–2001)Toyota Camry Discussion for years: 1992-1996 & 1997-2001
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Hello I have a 92 Toyota Camry XLE that I have replaced almost everything having to do with the cooling system. It runs fine without any overheating issues except if you run the A.C. I did not think that the cooling system had anything to do with the A.C. or was connected with it at all. Has anyone experience this or know anything about it. Any suggestions would be appreciated, Thanks.
Coolant leak or overheating? Not sure what problem you're having?
Running A/C puts a much larger load on the engine, so if the cooling is marginal, running A/C can push it over the edge. Not sure about your rig, but a lot of the Camrys came with dual fans -- one of them only running when the A/C was on, specifically to help keep things cool.
BTW, is this a 4-banger or a 6-banger? A lot of possible suggestions are going to depend on the engine.
Well it is a V6 and it does not overheat. When I used the A.C. it overheated because it leaked all the coolant. It does not normally leak coolant it only does when I use the A.C. Very Strange
Leaked all the coolant from where? And what do you mean by "all"? The A/C will dump additional heat into the engine bay, so as mentioned, that could cause a marginal system to boil over. Start by replacing your radiator cap. Do your fans run normally?
Quote:
Originally Posted by hill8570
BTW, is this a 4-banger or a 6-banger? A lot of possible suggestions are going to depend on the engine.
XLE so V6.
__________________ 2000 Lexus ES300 Millenium Edition1MZ-FE 64,000 Km 1993 Camry V6 LE3VZ-FE 164,000 Km SOLD but still in the family 1990 Camry LE2VZ-FE 202,000 Km 1987 Camry LE3S-FE 435,000 Km 1971 Corolla 2-door Coupe2T-C 260,000 miles
I was looking at the A/C wiring diagram .... for another post ...
anyway, there is an A/C pressure switch which closes and does two things.
It turns on the compressor's magnetic clutch, and it also closes a switch for a condenser fan.
Do you see a separate condenser fan turn on .... just behind the radiator ... when you turn on the A/C?
__________________
98 Camry LE, 2.2L, automatic
50k miles, drop in K&N A/F recent timing belt, water pump
Well the fan was having trouble because it runs off of the hydraulic pressure and they have been know to notoriously break so it was wired (professionally) to stay on so it would not over heat. As far as the leaking coolant it looked as if it was leaking out of a small hose that runs underneath the radiator that I believe is one of the A.C. hoses. I know that it is not the radiator cap because I have replaced that. Thanks for the suggestion though.
Last edited by skateandneverdie; 07-19-2011 at 04:55 PM.
On the 1992 V6 there is only one fan, it is regulated by a solenoid on the power steering pump, that solenoid is controlled by a cooling fan "computer" under the dash on the right hand side of the car. The pressure switch AFAIK is only used to prevent the compressor from running if there is too much or too little pressure in the A/C lines, it does not interact with the hydraulic cooling fan.
edit - I just saw your post, it is not a good thing to have the hydraulic fan non-regulated, that just wastes energy from the power steering pump, I would get that fixed properly. There are no cooling system hoses that run under the radiator, do you mean the transmission cooler lines?
__________________ 2000 Lexus ES300 Millenium Edition1MZ-FE 64,000 Km 1993 Camry V6 LE3VZ-FE 164,000 Km SOLD but still in the family 1990 Camry LE2VZ-FE 202,000 Km 1987 Camry LE3S-FE 435,000 Km 1971 Corolla 2-door Coupe2T-C 260,000 miles
Well the fan was having trouble because it runs off of the hydraulic pressure and they have been know to notoriously break so it was wired (professionally) to stay on so it would not over heat. As far as the leaking coolant it looked as if it was leaking out of a small hose that runs underneath the radiator that I believe is one of the A.C. hoses. I know that it is not the radiator cap because I have replaced that. Thanks for the suggestion though.
It's not leaking from anything having to do with the A/C. My money's on a hairline crack on the upper or lower tank of the radiator that is running down and dripping off the bottom of the radiator. Easiest way to troubleshoot this would be to rent or borrow a cooling system pressure test kit from an auto parts store, pressurize the system, and start leak hunting.
Well the fan was having trouble because it runs off of the hydraulic pressure and they have been know to notoriously break so it was wired (professionally) ....
Actually, they are notorious for not breaking. Being "professionally" fixed by jury rigging it, sounds like the work of someone who has no clue about how it works.
Has it been "fixed" to run at full blast all the time? I'd imagine that would get annoying since it can get loud. not to mention putting unnecessary wear on the pump and motor. If the cooling fan ecu has been bypassed it will never get the signal from the a/c amp to speed up. I'd say this is the cause of your problem, if you dont have an external coolant leak.
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Strange Coolant Leak!!
recent timing belt, water pump
Linear Mode
