I took my e30 out of storage last week, and noticed a couple of strange electric issues, which I need guidance in solving.
Here are the symptoms:
1. tach+mpg gauge are completely dead.
2. OBC display dead. The backlight works, but no info is displayed
3. Radio resets every time I turn the car off--it asks for the unlock code but my station presets remain.
4. Interior light works on one side, not the other (bulbs are good)
What I've done so far:
Replace fuses 10,12,21,27 with new units (all fuses in the car are new)
Disconnect radio and reinstall
Change SI board with brand new unit (tested in another car, cluster is fully operational there)
I'm led to believe that there is a grounding problem somewhere, but I'm not sure where. I have seen many threads with dead tachs, obcs and radios, but they seem to be fixed with fuse replacement. The fact that my radio works fine but resets seems unusual in that context.
Everything worked fine in September (when I parked it). The battery (new last summer) did discharge a bit over the winter, it took a 20-minute 6-amp charge to get the car to start with no issues thereafter). Not sure if that's pertinent.
Any ideas?
Here are the symptoms:
1. tach+mpg gauge are completely dead.
2. OBC display dead. The backlight works, but no info is displayed
3. Radio resets every time I turn the car off--it asks for the unlock code but my station presets remain.
4. Interior light works on one side, not the other (bulbs are good)
What I've done so far:
Replace fuses 10,12,21,27 with new units (all fuses in the car are new)
Disconnect radio and reinstall
Change SI board with brand new unit (tested in another car, cluster is fully operational there)
I'm led to believe that there is a grounding problem somewhere, but I'm not sure where. I have seen many threads with dead tachs, obcs and radios, but they seem to be fixed with fuse replacement. The fact that my radio works fine but resets seems unusual in that context.
Everything worked fine in September (when I parked it). The battery (new last summer) did discharge a bit over the winter, it took a 20-minute 6-amp charge to get the car to start with no issues thereafter). Not sure if that's pertinent.
Any ideas?
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