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240: Intermittent start problems, 1992. Should I suspect the wiring harness?

posted by  Spiralquest on  Tue Jul 20 09:15 CST 2004
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last visit: Thu May 1 04:41 CST 2008
[RELATED]

Thanks Greg.

I did check the fuel relay. It clicks when I turn the key, so I'm assuming it works. I also switched this out with an identical relay on the driver's side (don't know what this other relay does, do you?) and that also clicked when I turned the key.

As far as "won't start" goes, it will crank energentically, but about half the time it won't fire up. Sits for a a day or two, then, for no apparent reason, it will start up and run fine. Then, also for no apparent reason, it will cut out, usually when decelerating or at low speed. Sometimes it will reluctantly start right again, other times not.

I haven't replaced the rpm sensor, and it doesn't look in too great a shape. If this is bad, could it cause the cutting out problem when driving; or would it present a plain no start problem?

So far as I can tell (by looking and reading) the 240 doesn't have an ignition fuse. I could be wrong here though. I'll keep looking.

Thanks again for the help . . . and encouragment!

Andy






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