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Car is not starting, please help 700 1990

posted by  anastasialk on  Thu Dec 11 13:57 CST 2003
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last visit: Thu Mar 8 09:09 CST 2012
[RELATED]

Hello fellow 86' 740 B230ft wagon owner! I have some similiar problems as both of you. Mine has been going on for awhile so it has gotten worse. Can you keep in touch on this one. I would sure like to figure it out and fix it! It has been driving me crazy! What are some of the other symptoms you have been having?

Anastasia

86'740 turbo wagon 364,000
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To start, I believe there should be a grounding area on left inside side panel,(will have ignition ECU grounded here) definitely one next to FI ECU on rt side panel. Remove instrument cluster(2 hidden screws behind pop off covers ) follow black wires from cluster.I think there is another ground area next to relay/fuse cluster area. Inside engine compartment- front left side near charcoal cannister, left headlight( this is a high failure area). Firewall ground strap to valve cover.


Measure resistance of ground from battery post to engine block. High resistance indicates corroded ground wire.(may be internal and not visable at ends)

Measure voltage across ground from alternator to block.

Good Luck , Joe






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