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Update + Question: 240 Classic Won't Start after Rain 200 1993

uid 17059's pic
posted by  Pancho Urbano on  Sat Dec 26 14:53 CST 2009
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last visit: Thu Aug 16 23:53 CST 2012
[RELATED]

Hi, folks.

I had posted earlier about our 240 wagon that wont start after a rain. The car is parked, not driven in the rain. My (new) mechanic and folks suggested the fuel pump relay may be the culprit. Perhaps water was getting into the area in front of the passenger's knees by the ECU? Others suggested a full tune-up.

Anyway, I changed out the relay, sprayed water over the front end, and then took the car through a no-hands, high-pressure car wash. It starts right up! So... I suppose it might be the relay? The next rain will provide the ultimate test, but we'll be on the road to SF on Monday.

There were two areas that were wet, perhaps worth noting: 1) the area around negative battery terminal; 2) the upper left corner of the engine bay, where a wire goes into the firewall.

Any further ideas for troubleshooting/testing?

Best regards,
Esteban
San Diego, Calif.
--
((1993 245 Classic, 125K)) ((1992 244, M47, 115K)) ((1992 244, 120K - departed)) ((1987 245, 271K - RIP)) San Diego








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    Update + Question: 240 Classic Won't Start after Rain 200 1993

    uid 17059's pic
    posted by  Pancho Urbano on  Wed Dec 30 06:22 CST 2009
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    last visit: Thu Aug 16 23:53 CST 2012
    [RELATED]

    Update: So, the old relay looked OK, but after the car wash, and after the car ran well during the rain in the Central Valley, I thought I had solved the problem.

    It rained last night up here in East Bay, and now the car won't start.

    So... I think a tune-up and/or ignition coil may be the problem?
    --
    ((1993 245 Classic, 125K)) ((1992 244, M47, 115K)) ((1992 244, 120K - departed)) ((1987 245, 271K - RIP)) San Diego








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    Update + Question: 240 Classic Won't Start after Rain 200 1993

    posted by  pageda on  Sun Dec 27 01:10 CST 2009
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    last visit: Fri Oct 24 13:18 CST 2014
    [RELATED]

    Start the engine after dark and look at the cap and plug wires for sparks. The problem is likely bad plug wires or cracked cap. Replace the cap, rotor, plugs, and plug wires.
    Dan








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    Update + Question: 240 Classic Won't Start after Rain 200 1993

    posted by  david hunter on  Sat Dec 26 16:14 CST 2009
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    last visit: Mon Jun 30 22:10 CST 2014
    [RELATED]

    The fuel pump relay is usually mounted upside down, this combined with a leak from above can cause water to enter the case and accumulate during prolonged rain, turn the relay over. Inspect the old relay, the stains and damage will be obvious when you pop the case off. If you still have a problem give it a tune up paying special attention to plugs and plug wires.
    --
    David Hunter







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