where can I find the chassis computer on 1993 Volkswagen Jetta

one shop return my car not running the other one could not get it running said it needed the computer

1 answer
If its the 2.0 L gasoline engine, open the hood at the back of the engine compartment just under the windscreen toward the center of the w/screen is where the Electronic Control Module is. There are several service bulletins regarding the ECM. If you take the computer out contact Fuel Injection Corporation in Livermore CA I have found them to be very good at repairing PCM's, you will find them on the internet.