Quote:
Originally Posted by C Richards
OK, I've actually found the problem. I initially thought ICV, I had previously replaced this and it did help a little but the problem was still there. It actually turned out to be a problem of my own making, if I'm not going to use the car for a few days I disconnect the battery from my reading this looses some learnt settings from the ECU and reverts it to factory settings. I drove it yesterday and did my usual drive until it's warm then switch off and restart, I left the car overnight (with battery connected) and used it again today and it's perfect.
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Don't know where you read this, but this is not correct. The ECU on '80s Carrera is completely switched off from power supply (battery) every time ignition is switched off. No memory is maintained and no backup power supply is used by this generation of Motronic ECU. Hence it makes no difference whether you keep the battery connected or disconnect it.
If your problem has disappeared, it must be a coincidence.