I have a 1992 Volvo 960, 3 litre, 6 cylinder saloon with 120,000 miles on the clock. For the last two years I have had an intermitant misfire. The problem especially occurs when cruising and accelerating quickly. The whole car shakes initially and percists for a few miles and clears.
Its been to the main Volvo dealer numerous times without resolution. The plugs and coils have been changed.
No one seemsb to have a clue.
Please help.
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