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Posted on Mar 12, 2010
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2000 xj8 vanden plas was running fine parked it in my garage for the weekend and on Monday am turned the key and it spun but no crank...battery fine...help help

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ltbird

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  • Posted on Apr 07, 2010
ltbird
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I have had the same situation with the 2000 VP. It eventually starts after several minutes. (Be careful not to over-crank the starter or it will overheat.) The engine starts very rough, smoky and sounds awful. Keep the accelerator at a point where the engine "catches". I suspect the problem is not electrical, but fuel injector / supply system. Perhaps a dirty fuel filter, etc. This has happened ONLY when the car has sat unused for two to three days. I have yet to ask my mechanic.

  • ltbird Oct 13, 2014

    Mechanic says probably a pressure leak in the fuel rail while car is not running. Easily checked takes time, but haven't gotten around to it yet.

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  • Posted on Mar 12, 2010
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Don't know how you tested battery, but did you try to jump it anyway? Have you inspected your fuses? All connections from battery to connection terminations have to be clean and tight. Wires at starter have to be in good condition. Ground wire is very important to engine block, luxury cars are very good of isolating powertrain from body (lessens vibrations). With an idiot light you can check if there is standby power at the starter (that would be the big wire from battery) There should also be a small wire at starter, this is the wire from the key switch (after it passes a relay). Very carefully a mechanic trick is to short out (with a screwdriver) the big wire, on the starter to the little wire. CAUTION: this will force starter to crank the engine! But if key is turned off engine will not actually run. But the spark and noise may startle you. This lets you know starter and battery are in good condition. So you know the problem lies in the key switch, relay or wiring to the starter. If you can't fix at least you can tell your mechanic.

If you put the key in the "on" position and jump starter as described you can start your car avoiding a tow!

  • ltbird Oct 13, 2014

    Not recommended for the inexperienced. Can also shock the bejesus out of you if you are not insulated from the metal screwdriver. Ouch!!

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