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1990 240 Sudden Run Failure

posted by  Paul D. on  Fri Sep 21 09:56 CST 2012
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last visit: Sat Jan 18 13:23 CST 2014
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My 1990 240 just died in traffic. This car had been off the road for about 3 years with occassional runs up and down the driveway to keep it limber.

Fine crank, etc. but no typical fuel pump pressuring sound when the key is on.

I've checked the fuses inside and under the hood, and the main relay behind the glove box is replaced with a new spare. The voltage and continuity checks at the relay terminals 30, 87 and 86 are as indicated in the Bentley manual.

Is the ECU the only thing left to check? Bentley is sending me that direction, but I am not completely comfortable with testing it without ruining the thing.

Thanks,

Paul
--
Paul Despres, 1990 240 DL 205K, Austin, Texas








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    1990 240 Sudden Run Failure

    posted by  TONY H on  Fri Sep 21 11:02 CST 2012
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    last visit: Fri Oct 17 16:39 CST 2014
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    I'm not positive but I think the '90 car is when they stopped the pre pressurizing with key in 'ON' position.

    '89 amnd some '90 car's had the xxxxx561 ECM that is supposed to be problematic.
    What do you have?
    --
    '75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.lyse.net/brox/TonyPage4.html http://cleanflametrap.com/tony/








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      1990 240 Sudden Run Failure

      posted by  Onkel Udo II on  Fri Sep 21 12:32 CST 2012
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      last visit: Fri Oct 24 08:50 CST 2014
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      In short...what he is saying is before you "test" the ecu, just look at the ECU label and if it any color but white, do the Art B fuse jumper to verify it is the ECU.







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