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Electrical, Battery drain 900 1993

uid 18083's pic
posted by  lucid on  Sat Sep 27 12:51 CST 2003
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

A few months ago I had a bad Fuel Injection relay on a 240 (same as 900). A broken/missing armature spring let the fuel relay points touch just enough to draw about 4.5 Amps — through the fuel pumps (but not enough to run them).

You believe, "there is a heavy drain on the battery and it will kill the battery in just an hour or so", which seems to point to something other than a bulb. Try pulling the FI relay (White case, location in the FAQ).

If no luck on that, I'd pull HALF of the fuses at once. If that doesn't help, put them back in and pull the other half. If it is (hopefully) fuse-related, the culprit should be in one bunch or the other — then keep half-splitting till you've narrowed it down to one fuse. Then we go from there. I have wiring diagrams.
--
Bruce Young,
940-NA (current)
'80 GLE V8 (Now gone)
'83 Turbo 245
'73 142 (98K)
'71 144 (track modified--and still here)
New 144 from '67 to '78
Used '62 122 from '63 to '67






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