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    Holden Vectra won't go over 40 km/h

    Holden Holden Advice Holden Vectra Holden Vectra Advice Holden Vectra 1999

    My 1999 JS Holden Vectra won't go over 40 km/h, is it possible the computer is in "limp" mode? If so, how do I fix it? Or could it be something else?

    Answered by CarsGuide
    19 December 2014
    Graham Smith

    It is possible that it could be in limp-home mode, but if it is you should have warning lights showing on the dash indicating a problem. If there are lights on you could try turning the ignition off and on again, which might reboot the computer it it's a glitch in the system. If it won't reboot and there are warning lights on take it to a mechanic to have the problem diagnosed. If there are no lights showing it could be a blocked exhaust. Again you need to have a mechanic check the exhaust, particularly the catalytic converter to see of the ceramic structure has collapsed.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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