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Fuel pump relay problem on 940 900 1993

posted by  someone claiming to be Dave P. on  Sat Apr 16 04:23 CST 2005 [RELATED]

Two weeks ago, I couldn't start it and the fuel pump relay was replaced. It ran fine until this morning when I tried to start it up. It seems to be doing the same thing as before - the engine just cranks and won't turn over. Is something burning up the fuel pump relay or should I be looking somewhere else?

Thanks.








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    Dave one more thing. This happened to me, look at the pins where the 900 1993

    posted by  someone claiming to be 940/s80 nut on  Tue Apr 19 07:22 CST 2005 [RELATED]

    relay plugs in to the relay panel. You will need a flash light and a miror.Look in where it plugs in with the miror and make sure all female receptacles are in place because did the same as yours. The pin was arcing and would burn up my relays I had to lift up the panel and epoxy the receptacle back in place.

    Regards,

    Lane








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    Fuel pump relay problem on 940 900 1993

    posted by  Hibbo on  Sat Apr 16 22:35 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Jan 30 18:28 CST 2013
    [RELATED]

    Hi,
    Had a problem with my wife's 93 940. Replaced the fuel pump relay with a new FCP Groton relay. I carried it for emergency on road situations. Problems persisted.

    Not suspecting the new relay, it caused great frustration.Finally I tried a known working relay and all was solved.

    The resoldered FCP Groton relay is now working and will hopefully serve its purpose next time.

    This is not a put down for FCP Groton.....I highly recommend them, they are a top company to do business with.

    Take care,
    John H from Downunder







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    Fuel pump relay problem on 940 900 1993

    uid 6573's pic
    posted by  javalion on  Sat Apr 16 06:22 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Jul 23 09:57 CST 2014
    [RELATED]

    Along with the crank position sensor and possibly the FI relay, don’t rule out a repeat failure of the FP relay. A new FP relay failed on me after about 3-4 months. Testing the failed relay with a VOM found an interment open circuit (solder joint) while giving the ckt board a light twist.

    Instructions for resoldering are in the FAQ.
    --
    Tom F. Couple of Volvos Mods, RainX & cup holders.








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      Fuel pump relay problem on 940 900 1993

      posted by  RepairmanJackal on  Sat Apr 16 13:07 CST 2005
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Jun 10 09:52 CST 2014
      [RELATED]

      I'm not sure if this model has the Rex-Regina injection system, but my 1990 740 has similar problems and it turned out to be the Radio Supression Relay. You may or may not have one in your car. But if you do, you have two of them and one controls the fan. So you can switch the relays as a test. Just a thought.
      --
      Six Volvos: all wagons.... 1972 145S, 1976 245 DL, 1983 245 GL, 1986 740 GLE, 1990 740 GL, now a 1995 940. Number 7 (a 1967 122S Wagon) is on the way.... Who needs a sedan, when you've got storage compartments in a wagon?








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    Fuel pump relay problem on 940 900 1993

    posted by  Jim Holst on  Sat Apr 16 04:52 CST 2005
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    last visit: Tue Jan 4 11:05 CST 2011
    [RELATED]

    When my '93 940 had an intermittant starting problem, it was a defective crank position sensor. This is the sensor mounted back at the rear of the engine above the transmission bell housing. The sensor cable insulation had crumbled with age and heat allowing the wires inside to touch sometimes. Has this sensor been replaced on your 940? If not, it is surely due. See more in the FAQs.

    This is not a hard repair. The sensor costs about $40US and can be replaced in a few minutes.







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