1987 Volvo 740 Wet Weather Poor Performance

1987 VOLVO 740
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VOLVOQUESTION001
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Engine Performance problem
1987 Volvo 740 4 cyl Two Wheel Drive Automatic
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Hello
In wet or humid weather my 740 gle has little or no acceleration. I have already changed the plugs, wires, dist cap and rotor but it is still the same.

What can the problem be? It's fine when its dry outside.
Jul 3, 2008 at 10:55 AM
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