auto tranny over heating
#1
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Join Date: Feb 2007
Location: Rosemount, MN
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auto tranny over heating
when i bought this car(91) the previous owner had installed a newer auto tranny. when i talked to him about it he told me that i had to replace the tranny cooler. my question is, what causes the tranny to over heat even when there's a tranny cooler there to help? how can i prevent this from happening? cause when the tranny over heats it stays in what ever gear its on and it feels like there's no power to the wheels what so ever.
#2
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Auto Tranny over heating
I had the same problem except mine never had shift problems, just overheat. I replaced the water pump, radiator, and installed a trans cooler in place of A/C condenser, and a 180* thermo. A bit of overkill, I probably should have stayed with just the new radiator. I also put an electric fan with on/off thermostat. Now it`s running too cool. I had given this car to my son and now he says it won`t shift `til it warms up. What needs to happen now is the original range thermostat installed and maybe bypass the external cooler, especially with colder weather coming up. Later, he`ll probably want to replace the A/C condenser for next summer. Help any??
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#9
oi oi oi
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I dont know what auto trans is in our cars never seen one in person or have my book on me but have worked in a trans shop for a while and usually if your temps are up on trans. it usually is a blocked line, abuse, or insufficient cooling. If you have an external cooler and is overheating the damage is probably done. Drop the pan and break the filter apart and look for metal inside. Is the fluid burnt. Is there a trans temp gauge on autos or a dummy light. How do you know its overheating.
#10
oi oi oi
iTrader: (7)
And if you have problems a good flush is a fantastic way of wiping out the trans completely. The nasty *** old fluid acts as a friction modifyer on the beat up old clutches. if its a clogged cooler flush cooler only. take to trans shop and have them hot flush it. a regular trans flush most likely wont clean cooler out anyway. And external coolers are the way to go in any hard driving condition. A cheap 12 by 6 cooler from a parts store is only like 30 bucks.
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