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Help me narrow down the diagnosis >>> ’90 760 Turbo stalling…

on the two relays in the engine compartment drivers side, switch the connectors. If this solves problem remove both and resolder connections inside or replace. (mine had cold solder joints)

I also recommend that you pull the fuel pump relay and resolder.(located on relay rack behind ash tray.Access after removeing right side plastic on passenger side.
This is a very common problem with this vehicle.
Don't waste your money on new relays unless the contacts are burned off or physically damaged inside! 99% of the time it is a cold solder joint situation.






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