Question: After running an hour or so on a long trip the transmission oil light comes on showing it is overheating. Pull over and let it idle until cool down, but it will do it again unless speed held under sixty. Had transmission flushed, but it keeps on happening. Suggestions for fixing the problem most welcome.
Suggestion:This is a suggestion, I can’t diagnose the car or transmission complaint without examining the car. You can not diagnose a problem unless the car is at the mechanic repair shop. Similar to a doctor, a mechanic has to look at the patient for a diagnosis. Anything else is a guess. Guessing, and then inadvertently replacement parts, like people in forums suggest is wasting money.
My first thought is that your transmission is not shifting into all of it’s ranges. Since the problem occurs at over sixty miles per hour, the transmission is not up-shifting into overdrive or into lock-up mode. In either case the transmission is causing the engine to spin, or rev at higher speeds. This generated more heat, especially in the transmission. Causing it to overheat. Burns the fluid too.
You did not mention the type of vehicle, get it to a reliable transmission shop ASAP and have it diagnosed, the problem may be quite simple like a part called the inhibitor switch. Which tells the transmission what gear to be in. It is exposed to the elements and prone to failure.
The most noticeable sign your transmission is not shifting is a loss of fuel mileage. Some cars shift so smooth and ride so quietly it is hard for some folks to notice that the transmission is not going through it’s full range of gears.
Some years ago I worked on the transmission of a Nissan Infinity. The transmission was literally powdered. It was badly overheated and needed a complete rebuilt transmission. After the transmission rebuild was done and we road-tested the car, it would not shift. That was the red flag that told us why her transmission failed. It was not shifting. After some diagnosis time we found that the inhibitor switch was bad, thus not allowing it to up-shift past 3rd gear.
Being such a smooth running car is a testimonial for it’s overall excellence in engineering and quality. The drawback is that the lady who owned the car could not feel that the car was not shifting and that the engine was revving or spinning to fast. Which caused the transmission to overheat and fail.
Don’t waste too much time getting this examined and fixed while the problem is still relatively simple, otherwise you might as well bookmark this site. Got Transmissions.com has the best rebuilt infinity transmissions on the market. Call now for a free quote @ 866-320-1182
