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(edited reply) no start when cold -32 f 740 700 1990

uid 18083's pic
posted by  lucid on  Tue Feb 22 08:53 CST 2005
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

It is getting fuel just no spark when it is cold.

Are you sure about the fuel? The FI system is designed to pump no fuel until the Rex Ignition CU sends the Regina ECU a "Spark OK" signal. (Rex pin 17 to Regina pin 1.) Don't be misled by the pump running with Key ON. That's not the same circuit as when cranking/running.

I also agree that anything you can do to improve cranking voltage will be worthwhile, along with replacing the RPM sender as a mileage-related preventive measure.

Maybe try some hair dryer heat down behind the block to see if it affects the RPM sender? Probably better access from the right side.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.






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New no start when cold -32 f 740 [700][1990]
posted by  pilebuck  on Mon Feb 21 09:32 CST 2005 >


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