Just wondered if anyone can help me with diagnosing & repairing this intermittent fault we have with our caddy.

The vehicle in question is a "52" Caddy SDI & the problems we are having are intermittent limp home mode (1000rpm max) & the fault P1639 * Accelerator position sensor (G79/G185) * Implausible signal P1639 intermittent.

Both codes retreived using Snap on modis.

I have already replaced pedal potentiometer with no success & also found a very green & corroded ECU connecting plug which i soldered & shrink wrapped each wire to the ecu pins to repair.

Anyone with any idea to help me cure this would be a hero..!!