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Short running

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  • Short running

    Our 2004 C70 will start and run very well for about 20 minutes and then the motors seems to choke up and all warning lights come on. Power seems to be lost to operate windows, seats etc. Leave for a short time and vehicle starts and the cycle begins again. Any help really appreciated.

  • #2
    The most effective way to diagnose a problem like this is to connect the car to VIDA. If you don't have access to that software then I would call around to local Volvo shops and see if any have the software. A generic OBD 2 scanner might suffice too but VIDA is the best.

    The possible issues could be failing crank or cam position sensors, bad MAP sensor, etc... Or the loss of accessory power could point towards an immobilizer issue. This kind of issue is difficult to solve without a proper diagnostic tool.