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1988 740 GLE Highway Stalling Issue 700

posted by  setheee on  Mon Jan 24 09:12 CST 2005
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Please help.

I own a 1988 740 Turbo which I consider to be well maintained.

Recent History:
Complete tune up using premium parts 10,000 miles ago.
In tank fuel pump replaced 500 miles ago.

Part one: For the most part my Volvo runs great without any issues. Recently, I was driving on the interstate and without any warning my engine hiccupped. I thought I was a fluke but then about 10 minutes later the engine cut completely out without any sputter or warning. While staring at my gauge traveling approximately 70 mph the car started up again without any action from me. For the next hour of our trip the car did this. The longest it stayed stalled was about 7 seconds after which the car started again and I thought I saw some sort of sparks dancing on the highway behind me as the car came back to life, this could have just been a coincidence. On this trip all gauges appeared to be normal, my temp. ran about half way.

Part Two: On our way home the outside temperature was considerably colder and the temp. gauge maintained about 1/16th. On this trip the car gave absolutely no trouble.

Part Three:
For the past few days while driving at city residential speeds I sometimes come to a stop and the engine jerks a little and dies almost as if something is not disengaging.

Can anyone help. Thanks!








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    1988 740 GLE Highway Stalling Issue 700

    posted by  Aye Roll on  Mon Jan 24 12:01 CST 2005
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    last visit: Tue Oct 14 21:08 CST 2014
    [RELATED]

    Most likely, you need a distributor. The sensor at the bottom of it is shorting out and not producing the signal for the ignition. No ignition also equals no fuel pumps.

    A new distributor fixed this in our 88 740GLE sedan a few years ago.
    Fairly easy to install, but an expensive part.

    Good luck!
    --
    Rob Bareiss, New London CT ::: Roterande Fläkt Och Drivremmar!








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    1988 740 GLE Highway Stalling Issue 700

    posted by  dan52 on  Mon Jan 24 11:49 CST 2005
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    I have had some similar experience with my '89 760 TI. I believe the problem is now corrected, but one can never be sure with intermittent problems.

    I felt the problem was most likely caused by some electrical gremlin and I cleaned the following electrical connectors and applied silicon dialectric grease to them: AMM connector, primary coil contacts, hall sensor (base of the distributor), and the Ignition power stage.

    I focused on the electrical connectors, because the first time the problem occurred, the car died at low speed and would not restart and continue to run. I drove home with the AMM disconnected and reseated the connector and it ran fine for a couple of weeks until I had the same highway experience you described ( No sparks that I saw.)

    Good Luck,

    Dan







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