1998 Volvo S70 flashing check engine light at high rpm &

1998 VOLVO S70
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GEORGE SCOTT
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Engine Performance problem
1998 Volvo S70 Front Wheel Drive Automatic 174K miles

engine misses at under high rpm & load.
tune up has been done.
obo2 reader code is P303, which is misfire on cylinder #3.
Its going from "closed loop to open loop" during mis-fire.
there is perceivable loss of power during mis-fire.
check engine light flashes during mis-fire and changes too a constant light at steady speed.
This is a 5 cylinder 2.4 litre non- turbo
Dec 14, 2008 at 4:53 PM
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DOCFIXIT
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Have you replaced plug wires? It maybe an injector problem no fuel will cause miss on a cyl. What is fuel pump pressure?
Dec 15, 2008 at 10:38 AM