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Thread: Disco Electrical problems

  1. 15th August 2011, 08:03 PM #1
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    austrescue
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    Cool Disco Electrical problems

    Help,
    I have a 1992 Disco on our Farm (unregistered but much used) I have what seems to be an Electrical fault but I'm buggered if I can find it. The old girl runs fine then stops (seemingly via some main circuit breaker or similar) after a couple of minutes of no starting I can just hear a single "Tink" from the front either in the dash or engine bay and away it will start. The noise sounds like a Thermal overload resetting, but I can't find the bloody thing ! Any Ideas or hints would be great. The Farm is several Hundred Kls from nearest town so local mechanics are few and hard to get.
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  2. 15th August 2011, 08:07 PM #2
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    V8 or 300TDi? The 300TDi has a stop solenoid on the injector pump whose wire comes loose. It needs a quick squeeze with pliers and refitting.
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  3. 15th August 2011, 08:20 PM #3
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    Thanks

    It's a V8
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  4. 15th August 2011, 08:47 PM #4
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    Has the vehicle got an immobiliser fitted? Can you hear the fuel pump run when you turn on the key? Its unlikely to be a circuit breaker, but everything that runs is controlled by relays. The relays are below the steering column area and behind the RH kick panel I believe. You will need a workshop manual, see the "shop" button at the top of the page and purchase a "RAVE" CD manual. Get out a multi meter and check for power at the ignition coil. Check for spark when cranking too.
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  5. 16th August 2011, 10:03 AM #5
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    I'm not sure on the 92 Disco but on the update post 94 Discos there is a black rubber press switch up on the fire wall in the engine bay in front of the passengers side.
    This is the reset switch for when you have a crash and cuts the engine off, unlocks doors, starts hazards etc.
    After a crash, you press this reset switch and the car will run again.
    If the 92 Disco has this switch, maybe it is faulty?
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  6. 17th August 2011, 07:17 AM #6
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    The D1 V8's (pre update model) do have a fuel cut off switch. Can't remember exactly where it is. I think it's under the dash somewhere. It cuts the fuel supply in the event of an accident. It's a relay type thing with a button on it to reset it.

    HTH

    Ivan
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  7. 17th August 2011, 10:32 PM #7
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    I used to own a 90 (HA) v8 Disco - underneath the airflow meter should be the EFI relay. It's a normal relay, but can corrode. Try replacing it with a similar one from inside ( or a spare ).
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