Skip the auto shop - Our mechanics make house calls

Q: Why would my ecm or tcm overheat

asked by on

My ECM or PCM is overheating I was wondering what would cause that

My car has 200 miles.
My car has an automatic transmission.

All the ECM’s or PCM’s will generate some normal heat from the transistors, processors, or chips. If you are having failure from a problem, then there should be codes stored inside the module that may indicate the problem. You may feel the housing is warm or even hot on sections that have heatsinks. If you begin to experience more severe drivability concerns, I would have a certified technician inspect your electrical system to see what may be causing the modules to overheat.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: How do I bypass the PAT system? Or how do I bypass the anti-theft command controlled by the PCM?

The PATS system cannot be bypassed. You are required to have a coded PATS ignition key in order for the computer to turn on the spark and fuel to the engine. If you do not have a PATS programmed key...

Q: Will turn over but won't spark to start, 1987 Chevrolet Cavalier

Hey there, thanks for writing in about your 1987 Chevrolet Cavalier. As you may already know, your car needs air, fuel, and spark to start. You have covered most of that already. If it is not getting spark, start by...

Q: Brand new rebuilt engine - gets hot quick, high idle. 1986 Volvo 245

Hello - it sounds like your distributor was installed 1 gear cog off from where it should have been to allow for adequate "timing adjustment" motion. Pull the distributor, and re-install one cog "more advanced" to give you more adjustment...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.