Steve Piette just refurbed my GVR4 ECU and did an amazing job. The ECU is beautiful, looks new and even came with that new ECU smell
. He was very responsive, helpful, professional and provided a service report. It was time for another set of caps and there was some acid damage left over that needed repair. Highly recommended!
Here's his web page: http://home.xnet.com/~steve/Auto/DSM/ECURepair.html
and my summary report:
MD165810 91-92 GVR4 (E39A) Federal MT EPROM ECU
6578E Processor board from MD166262 6/90-6/92 Federal MT 1G DSM Turbo AWD
R129 Installed R25 Installed
R130 Not Installed R26 Installed
Reported Problem: Capacitor Replacement and repair.
ECU executes heartbeat on arrival.
Capacitors previously replaced and potted.
Electrolyte still present under potting
D118 removed to clean. Reinstalled.
C44 ground open. Replaced.
C108 +5 pad almost gone. Repaired.
C106 ground pad gone. Repaired.
C106 +12 pad almost gone. Repaired.
Pin 68 (ISC B2) open at C106 via. Repaired.
C19 damaged. Replaced.
R46 damaged. Replaced.
C106, C107, C108 replaced.
ECU executes heartbeat after repair.
Passes all sensor and solenoid tests.
Car starts, runs, no codes.