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Won't Fire After Much Replacement 700 1988

posted by  gritchell on  Mon Jul 11 14:20 CST 2005
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I have an '88 740GLE Wagon, non-turbo, with an electrical/ignition problem.
It orginal wouldn't ture over, just a heavy click. After doing the following I got it to crank:

1. Charged battery, only a year & half old
2. Replaced Positive (+) Battery Cable
3. Replaced Positive (+) Wire Feed Connectors at battery (sodered)
4. Cleaned and Reseated negative (-) battery cables and grounds to block and frame
5. Swapped out misc. relays with used, no response, replaced originals
6. Replaced Starter/Solenoid
7. Cleaned and INcreased tension on the Neutral Safety Switch circuit contacts

Got it to Crank with transmission in neutral, but no spark to plugs.

1. Tune-up, including Cap, Rotor, Plugs, Wires
2. Replaced Coil (tested bad in primary reading)

Last advice I got that I haven't been able to find is the Power Stage located over by the air filter box.
There is a small flat device with a wire for the harness running into it on the inside of the fender beside the
air filter box. Is this the Power Stage? I don't have the Volvo Electrical Manual to verify. Is there an on-line
source for Volvo schematic assemblies. I have some of the original Volvo Of America.

Thanks...






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