MY DAUGHTERS CAR A 95 CIRRUS TRANSMISSION QUITS WORKING WHEN IT GETS HOT BUT WHEN SHE LETS IT COOL DOWN IT RUNS FINE UNTIL IT GETS HOT AGAIN ANY THOUGHTS I WAS TOLD TO FLUSH THE COOLER AND CHANGE FILTER
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It means that the transmission oil is overheating and you need to cool the oil by allowing the engine to idle for a period of time . The transmission oil cooler is in the radiator and that means that the engine temperature will also be running hot . Check oil level in transmission and adjust to correct level. Check the load being carried /towed as this makes the transmission torque converter work harder and the speed you are travelling at What ever the reason I suggest that you run the fault codes to check for transmission problems
The tanks are plastic and if the hose fitting broke out then the fix is a new radiator. As in radiator coolers are prone to failure before you invest in a new radiator , consider buying an air to air oil cooler to cool the transmission oil . The oil will run at ambient temp and not at 95 degrees c or hotter and the radiator is not having the load of trying to cool really hot oil. Talk with an auto transmission shop to get some details and I think that you will find the oil cooler cheaper than a new radiator.
if it is indeed hooked to your transmisson, its the transmissoin cooler lines, which are ran to the radiator to get cooled off. The oil cooler cools your engine oil, and has nothing to do with the transmission. If these lines are severed, or cut, your transmission will not operate. It will squirt out all the transmission fluid. I suggest replacing them because if they are already hanging low, then a crimp or weak spot is already in place to cause transmission problems.
oil in the cooling system comes from a transmission oil cooler in the radiator leaking. I take it that you have an automatic transmission Normally if you have a gasket problem the water would be in the sump oil. You will need to replace the radiator to effectively fix the problem and as a side suggestion consider an air cooled transmission oil cooler for the transmission oil as it helps the car to run cooler and keeps the transmission oil cooler and extends the life of the transmission.
If it is in the radiator it should as the fittings are the only problem you are likely to encounter. If you are wondering if the cooling capability is affected consider this . Hot tranny oil has to be cooled in the radiator water and this heat makes the radiaror work hard.Why don"t you consider a external cooler. They keep the oil cooler as they are are running in the outside air. Ie air temp 30 deg C oil temp 150c+ water temp 85degC oil temp 150c. You can see that the tranny oil looses more heat and it will not overload the radiator capability
Does it have an engine oil cooler? There will be cooler lines going to the radiator. Smaller lines will be an automatic transmission cooler and larger would be engine oil. The internal coolers can be leaking inside the radiator. Check those fluid levels as well. If one or both are low that may be where its going.
Then it could be transmission fluid but I would hope you don't let it go until it gets black.
Also, what color is the coolant? Is it the original red? May need to just flush the cooling system. There has been compliants on the factory red Dex-Cool. It would create sludge and plug heater cores.
If that is the e4od transmission ..They are known for that..Ford claims it gets too hot while idling..But you said you had a cooler..You can try taking out the vent and make sure its clear of debri..Its located on top of the transmission..
check your fluid levels first, and if its getting over 1/2 on your gauge you have cooling problems, check fluid levels, your transmission lines run through a part of the radiator in order to cool them, so you need to resolve the cooling problems
For starters have the radiator and coolant system flushed which may help cool the engine better. But when it gets too hot, motor oil loses it's viscosity ( thickness and lubrication properties ) and gets thinner. Especially in hot weather you should make sure you have good oil and make sure you dont run it low on oil. On the flip side make sure that it's not overfilled because this will blow out the seals and you'll have much bigger problems than no power. Hope it helps!