So, my 1983.5 1.9l WBX now has a wonky temp gauge AND the ECU indicator LED won't stop blinking no matter how long I wait for the ECU to self-check, or run the engine.
Even if I:
> Start the engine cold, or 
> Cycle the ECU by turning off the ignition and waiting, then wait with ignition on but not starting, or
> Disconnect either water temp sensor, or both (cycling the ECU each variation), or
> Disconnect, clean, and re-connect the ECU cable bundle. 
> 
> The 1.9l cold starts normally at ~ 1200-1400 rpm, and then drops the idle to ~ 800-1k rpm when warm, as usual. Engine seeks at hot idle a bit wider/faster than normally. Haven't been able to evaluate mpg.
> 
> Suggestions, please? Thanks!
> .
> 
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