Can you swap in a used PCM, ECM or module?

Can you swap in a used PCM, ECM, or module from a junkyard? The short answer is NO, you cannot swap in a used PCM, ECM or module from a junkyard. Even if the part number on the used PCM, ECM or module is exactly the same, that doesn’t mean it’s programmed properly.

Can you replace your PCM with a junkyard PCM?

Also to test this computer theory could i swap one from a 1996 that is identical other than the 1996 has cruise control. Click to expand… the tranny is controlled by the speedo sender fluid. the new one would have to be reflashed with your Vin code before it would work in your truck. Click to expand…

When did I replace my ECM on my Avalon?

I actually replaced an ECM myself on my ’99 Avalon – twice actually. The first time I bought a ECM from a junkyard for about $40 without shipping. I plugged it in and unfortunately it was DOA.

What should I do if my ECM doesn’t work?

I plugged it in and unfortunately it was DOA. Shipped it back and ordered another ECM from a different wrecker. this time it worked fine (thankfully) – although as a relative of mine is an Electrical Engineer I actually had some extra industrial grade tools to diagnose my car.

How do you replace an ECM in a GM car?

Install hardware on the replacement unit. Reconnect the electrical connectors, making sure they are clean and firmly seated. Install replacement ECM using the hardware from the original unit. 5. TESTING Connect a scan tool to the diagnostic connector located under the dash on the driver’s side.

I actually replaced an ECM myself on my ’99 Avalon – twice actually. The first time I bought a ECM from a junkyard for about $40 without shipping. I plugged it in and unfortunately it was DOA.

How much does it cost to replace an ECM?

The replacement of an engine control module can be a pricey fix. An OE ECM replacement part can cost about $45 for a basic ECM that is remanufactured or needs programming. Take note that diagnosing which part of the ECM is faulty is very tricky, and you might end up replacing more parts than you originally intended.

Where is the ECM located on a car?

Depending on your car, your engine control module might have other functions, including idle speed control, electronic valve control, and variable valve timing (VVT) control. Generally, the ECM is located on the passenger’s side behind the glove box, under the floorboard or the seats.

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.

How much does it cost to replace an OE ECM?

An OE ECM replacement part can cost about $45 for a basic ECM that is remanufactured or needs programming. Take note that diagnosing which part of the ECM is faulty is very tricky, and you might end up replacing more parts than you originally intended.

Where can I find the replacement part number on my PCM?

Most supplier’s catalogs list replacement PCMs both ways. So if in doubt, always refer to the OEM number on the PCM and look it up in the suppliers cross reference index to find their replacement part number. The calibration chip and PROM contains the programming instructions for the vehicle application.