What causes an Allison transmission to overheat?
Possible the heat exchanger in the radiator does not have good flow. The lower fitting can get debris from failed converter clutch material. Running the trans fluid at the top hash mark can cause the Allison to run hotter than normal.
How do I cool my Allison transmission?
Set the parking brake, place the transmission in PARK (P) and allow the engine to idle until the transmission temperature falls below 265°F (130°C).” My personal transmission temperature redline is 250°F before I start looking for a place to pull over and cool it down.
What temp is too hot for Allison Transmission?
Temperatures from 230-240 have been reached with no damage to the transmission. If you are seeing temps above 225 degrees on a regular basis you should check your fluid level. Fluid levels to high may cause excessive temperature.
What are typical problems of an Allison Transmission?
Other problems include the transmission throwing fluid out of the fill tube, excessive engine flares, intermittent noises and the retarder not functioning properly. Abnormal shifts in an Allison transmission happen during shifting at high and low speeds.
What to do if your transmission is slipping?
Using the wrong transmission fluid will ruin your transmission. If the fluid is below the ‘Add’ mark, you need to refill it with the specific fluid for your car. Use a funnel to refill the transmission fluid to the recommended level. After this fix, check for transmission slipping again.
Why is my Allison AT545 making low torque?
Intake or exhaust air leaks, dirty/damaged aftercooler, turbo problems, and fuel system issues are among a few things that will affect low end take off power very easily. Low take off power is usually a problem with the engine and not the transmission. My only thought is that the TC has too low of a stall speed for that engine.
What does it mean when your transmission is overheating?
Transmission slipping should not be ignored because it’s a sign of problems that should be addressed immediately – including an overheating transmission caused by bad fluid. So, a good examination of the fluid level and its condition might be just what you need.