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cold weather 850 1994

posted by  KlausC on  Fri Nov 20 10:09 CST 2009
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

You can eliminate the fuel pump relay from consideration by jumpering it out of the circuit.

Remove the relay (#103) and look next to the pins in the base. Molded into the plastic you should see the numbers 31, 31b, 15, and 87. Fashion a jumper wire and jumper between the socket connections that correspond to pins 15 and 87. If the car fires right up your relay is bad. If it still doesn't run then you may or may not have a problem with the pump. The only way to tell for sure is with a fuel pressure gauge.

If the pump and regulator is working properly you should see 43.5 PSI at the end of the rail.

...Lee

The above is the link I was refering to. The relay is in the fuse panel, engine compartment. Have the engine off when you use a short piece of insulated wire to make the jump. This "jump" will turn the fuel pump on so long as the key is in the ON position. Do not drive this way, because if you have an accident the fuel pump will not stop running until the key is turned OFF.

Klaus
--
Proud owner of a 220S. If I had more room, I would have more Volvos.






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