If love is a synonym for motivation and stubborn to actually finish a car, then great haha.
Nick and I were reflecting in the cold the other night that we were actually pretty proud and happy to get the car to where it is.
1) he called me a photo whore for documenting so much stuff
2) he was amazed at how much we actually did over the course of the repair and restore13 July 2016
Installed washer jets, need to find the hoses and then that job is done
I removed the gauge cluster and plugged in my cluster, checked the cluster loom and various connectors/flexible circuit board at the rear but no sign of issues or anyone tapping in.
We took the car out during the night and checked the speedometer against a GPS speed meter app on the phones. Speed seems to be about half the value of what the speed should be.
Raised poss cap issue with Dee who replaced the caps in the ECU. He did suggest that caps on the cluster itself could have failed or be leaking.
Also contacted the previous owner. No changes or issues when he had the car. Seems to be an issue that has cropped up during the changes Nick and I have made.
Things to do for testing:
- check all grounds on engine and in dash
- run test leads to gauge cluster/ECU/speed sensor connections to test voltage and resistance against each other
- fix my gauge cluster to read correctly and then test in the car properly. My gauge cluster was way out due to me mucking about with the needles and mechanism 8 years ago
- identify, through the wiring diagram, the path of the speed signal e.g. speed sensor > speedometer > ECU or speed sensor > ECU > speedometer
- remove panels from underside of dash and centre console and check all wiring
- check if jumper wire is in engine diagnostic port
- check if former alarm module wiring was removed cleanly with no issue in wiring
- check all fuses and all wiring under the dash as back lighting seems dim across the whole dash
Thinking: If it is reading about half, then I think it is a resistance issue. Could be a dry solder joint, could be a break in the signal connection, though the speedometer is still reading consistently.
Finally, we'll look to change the gearbox oil over the weekend and bleed the clutch fluid. That notchy 3rd gear is getting really annoying now.
Becoming a running list of things to check re: speedo. Fun with electricity lol