Q: 4l80e transmission in limp mode

asked by on

I changed out same ECM and transmission from my other van that is same year and model that all worked perfect before change out, after chanhr out transmission is in limp mode, checked with scanner and there is no fault codes, thanks for any clues.

My car has 140000 miles.
My car has an automatic transmission.

Hello and thanks for your question. When changing out the transmission and ECM from another vehicle to your vehicle with the same year and model can effect many things. Check all plug to ensure that everything on the transmission is plugged in. Check the computer system to ensure all of the cables are tight and locked together. On most newer vehicles, the ignition switch is programmed with the computer system and is coded with the VIN number. In this case, you could do two things, either take the other ignition switch from the other vehicle and swap it out (only if the key has a chip), or have your computer flashed to the VIN on your vehicle. Also, try hooking up the original ECM to your vehicle, that is if the harnesses are the same and your old ECM is functional. As long as the same sensors are on the transmission as the other one, the ECM will not care what kind of transmission you have installed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 4l80e transmission in limp mode

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What is the price range to reset and/or reprogram the computer?

Billing question was sent to CS for the cost to reset or reprogram a ECM (computer) for a 2008 Volvo S80 with a L6-3.0L turbo engine.

Q: 2000 Audi A6; Any idea on an average amount of miles before the car starts having problems.

Most vehicles last between 250K to 350K depending on the maintenance that is performed. Some exceptions are when the vehicle is taken real good care of and lasts more than 350K miles. If the vehicle is at 130K miles and...

Q: mysterious oil disappearance

Hello. It sounds like your engine may be consuming oil. Blue smoke is usually the result of engine oil being burned in the combustion chamber. It may be possible that the piston rings or valve stem seals have begun to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...