I'm helping with a problem on an 86 Syncro GL. This thing has a new
Distributor, Temp II Sensor, O2 Sensor, Plugs. After installing these,
the engine would still die when it hit a bump. It was eventually
discovered that tapping on the ECU would kill the engine. To re-start,
it would require much tapping on the ECU, once again. Upon request, I
showed up on the scene with 4 used ECUs. These were all tested on my
86 Syncro and all worked fine. Well, that engine would not start with
any of my ECUs. It would only start, eventually and with enough
tapping, on the original, shaky ECU. Any ideas?
Thanks,
Miguel

'In heaven all the interesting people are missing.'
  - Friedrich Nietzsche