1 reply to this topic

[MSmiley89]

Hello everyone,

I've looked at some pinned posts but couldn't find quite what I was after, with my specific issues. Any help would be much appreciated please!

My 1995 SPi won't start cold. My MEMS diagnostics cable says there's a coolant temperature sensor fault. I can't clear it. I had the pleasant job of replacing the sensor at the weekend, but that hasn't worked either. The diagnostics cable shows a fixed 59 deg reading with a fault present - I wonder if this might help narrow down where the fault is?

The engine primes and turns over, just doesn't start. At the risk of killing my battery, I eventually got it to start, and it was perfect after that. Running beautifully and starting first time

The only thing I can think of is:
- damaged cable from sensor to ECU
- I found one of those resistor cables to the coolant temperature sensor
- ceramic heater on the inlet manifold

Any other thoughts please?

Thank you,
Matt

Attached Files

•  PXL_20230729_121138395.jpg   36.73K   4 downloads
•  Screenshot_20230714-173917.png   119.94K   3 downloads

Edited by MSmiley89, 31 July 2023 - 09:33 PM.

[68+86auto]

I can't comment on the SPI specific details such as the temperature sensor fault but check the battery voltage while cranking. If the voltage drops too low it could cause issues.