I checked the resistance when cranking the engine and its changing so I guess it is working. I checked spark on coil itself and there is no spark, but there is something weird because I used light bulb one time and it was flicking (instead of coil). I might give it a try again today to be 1000% sure...

Hi arpski, An old topic yes, but still as relevant as ever! You appear to have diagnosed your problem - if you are measuring 1500 ohms accross the Renix unit coil contacts it does indeed suggest a faulty unit - rare but not unknown (obviously ensure the contacts are perfectly clean). You can confir...

I have 340 1.4 CVT volvo from 87 or 86, ive checked everything and there is no spark at all. I bought new coil and capacitor, still no effect, there is earth and +12V on white plug (the renix thing), engine speed sensor is working (around 200ohms). Is it the renix control unit broken? I checked and ...

This is quite old topic, but i give it a try. I have 340 1.4 CVT volvo from 87 or 86, ive checked everything and there is no spark at all. I bought new coil and capacitor, still no effect, there is earth and +12V on white plug, engine speed sensor is working (around 200ohms). Is it the renix control...