I have a 95 4runner 3.0l n my engine is heating up when i'm in town driving or on highway for a period of time when i have my a/c on and it makes a/c blow hot air.... I put in a new radiator and thermostat and it helped a little but not much....please help to what may be going on..there are no signs of leaks anywhere. the fan seems to be working. one friend suggested a collapsing hose but i don't know about that but maybe i'm wrong. any advice please! thank you!!
Engine heating up with a/c on
- Thread starter azhawk22
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rustbucket
New member
Did you properly burp the cooling system? May have air in the system still......or a stuck thermostat.
the_dingman
New member
Yes, but:
The condenser is in front of the radiator, and it generates extra heat, reducing the cooling capacity of the radiator, while the compressor puts extra strain on the engine.
The first thing I would check is to make sure there is no debris in between the condenser and the radiator. Beyond that, I would check the cooling system itself. Assuming that the AC is only on when it's really hot, and it's always on when it's really hot, it may not have anything to do with the A/C, but have everything to do with the temperature.
Also, is the 3VZE a belt-driven or electric fan?
thanks for the reply's, i appreciate them!!! my engine is belt driven. thermostat and radiator are new so shouldn't be an issue there, the line was burped of air n no leaks anywhere..... is the a/c condenser fan suppose to run on idle or lower speeds? engine only gets hot when a/c is on. had compressor checked and freon a month ago and all good there...i'll try n check the fans..i'm at a loss here 
arty:
Rix
New member
Do I get a cookie?
as3goliath
New member
Actually answer is no price is cheaper and mechanical puts out slot of com as far as air movement if u wheel slot I'd say electric and mechanical is good idea cuz at low speeds mechanical lacks cooling but electric makes that up
Staceman
New member
I have the same issue. New BIG V6 radiator, thermostat, fan clutch in my 85 22RE SR5. Mine heats up on the hiway, with A/C on, if temp outside is over 105 degrees and I go over 70MPH. However, I now have a plate bumper and winch basically blocking the radiator all together now. I "rigged" a small air scoop to force in air from the bottom. Helps a little. I am debating the electric fan mod to help suck air thru the radiator...
fourwd1
Moderator
An electric fan does not use a clutch, belt driven ones do.
Since neither the 22RE or 3VZE engines ever came with an e-fan, there is no direct bolt-in application. You would have to devise mounting, wiring, t-stat installation, etc on your own. It is done quite often, so if you do a little research you will find plenty of info.
If the clutch on your stock belt driven fan is bad, replacing it would be much simpler.
