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My ignition system manual points out that I have problem with Ignition system.
There is no spark at Ignition coil on 740 '88.
I concluded that Power Stage must be at fault so:
I swapped the Power Stage from my 740 '86 to 740 '88. My 740 '88 still will not start. But I connected the power stage from 740'88 to 740'86 and my '86 will not start either. Putting Power Stage back to '86 and the '86 starts right up. Can anybody explain this?
Both volvos '88 & '86 are using the same Bosch Power Stage.
Joseph
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