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240 won't start 200 1988

posted by  Lujo on  Sat Feb 22 10:52 CST 2003
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last visit: Sat Jul 14 07:45 CST 2001
[RELATED]

First of all, thanks for the suggestions I've received thus far. Unfortunately, I'm still stuck.

Synopsis: '88 240 won't start. If left alone for 10 minutes, it'll start for just a second (and sound perfectly fine) but then immediately die.

Things I've looked at so far:

- replaced the 25 amp fuse *and* fuse holder
- replaced all the fuses with new ones, cleaned all the contacts with a wire brush attachment on my dremel tool, and dabbed contacts with dielectric grease
- tested main relay *and* tried brand new one (both relays are on when cranking)
- jumped fuel pump fuses -- main pump sounds fine
- tried starting with AMM disconnected
- cranking produces slight gas smell, including stronger smell from tailpipe
- all tests at ECU from Bentley manual OK
- checked for spark at plug #1 -- looks fine
- resistances at coil OK

I haven't looked at the ignition system in detail, so that's next. Any suggestions are most welcome.

Thanks,

-Lujo
'88 240 in Princeton, NJ





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