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1990 Volvo 780 Question: car has no power



, 2.3L 4 Cylinder Turbo, Belleville, IL, March 24, 2011, 10:34

after reparing warped head, test drive at70miles hr. backfired after slowing to return home. checked timming,cylinder pressure,replaced master flow sensor. car starts but no power!HEIP!

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  • Answer #1

    March 24, 2011, 16:34

    Do you have a way to check fuel pressure? Does it have an EGR?
    Do you have a diagram with the relay layout?


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