Does the PCM control shifting?
With both the ECM and TCM together in a single unit, PCMs can better synchronize the functions of each one for better power delivery, fuel economy, and overall efficiency. For example, when the PCM decides to change gears, it can back off the throttle to make the shift smoother.
How do I know my PCM is bad?
Continuing to run a vehicle with a bad PCM could cause further damage. Because the PCM controls the emissions of your car, a failed emissions test or the presence of oddly-colored or foul smelling exhaust may be a sign that your PCM is going bad. A malfunctioning PCM will activate dashboard error lights.
Can a PCM be repaired?
PCMs are not rebuilt in the same way that alternators and water pumps because there are no mechanical parts that wear out. Remanufacturing in this case usually means testing the computer, isolating and repairing any faults that may be found, then retesting the computer to make sure everything works correctly.
Is ECM and PCM same thing?
ECMs (Engine Control Module) and PCMs (Powertrain Control Module) are used in the same parts of the engine: the computing module. The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. …
Why do I need a transmission repair at AAMCO?
Below are the tops reasons or signs that you may require transmission repair: AAMCO is the most trusted name in transmission repair and has been for over 50 years. What sets us apart is our comprehensive diagnostic approach, along with the knowledge and expertise to pinpoint the root of your transmission issue.
What happens if you have a bad PCM in your car?
If your automatic transmission vehicle isn’t shifting normally, take it to a mechanic immediately. A failed PCM or TCM can cause the car to get stuck in gear, which can be a serious safety issue. It can also lead to costly transmission damage.
When to replace your PCM ( and when not to )?
The onboard computer is the brains of the engine control system, so when the brain isn’t functioning correctly neither is the engine or anything else that the microprocessor controls – which may include the charging system, transmission, various emission controls and communications with other onboard control modules.
Can a mechanic tell if there is an issue with your ECM?
Sometimes, this light can be triggered when there are no issues present, but a simple test will determine which error codes are being thrown. A mechanic will be able to tell you if there is an issue with your ECM or another component.