|
Hi Bill.
[Edits below from the emailed copy you received. I misunderstood. Steve has two RPM sensors, not in the same engine, duh me.]
I'm admittedly not familiar with the subtleties of either the FB version or Rex/Regina, let alone all the carb'd K versions.
I've got the same '89 740 manual as you. The only Rex i ignition diagram is for B230F/B234F. I'd want to look online for a '93 940 manual for other possible Regina variations if I couldn't find a '90-92 740 manual. I'm assuming Steve's B230FB Rex i system can't be far different from the more common later 940 B230F Rex i. Maybe check a a '93 940 manual for Rex i differences. There's no Rex/Regina in my '95 940 manual. Note that these are Volvo North America manuals, so may not fully cover all the versions.
CPS testing using resistance does not confirm operation or the integrity of the shield, basically only a wiring break or short, usually evidenced by cable damage as I noted. I didn't realize there was an early and later CPS sensor for Regina. In any case, seems the two CPS Steve has are both okay and that's exactly what I would expect if there is spark.
If the coil (and a spare?) check out and there's good spark (presumably checked at all four plugs) then the ignition controller is alive and if there's no Check Engine light in the cluster then there's little chance of finding anything other than a 1-1-1 at port 6, whether or not Steve can get the diagnostic socket to co-operate.
I think you may have Steve chasing too far up the wrong tree at the moment in terms of likelihoods. This is a stall-out and no-start condition, not a running issue, so presumably something very fundamental. I'll give you credit, when you get focussed on something, you leave no stone unturned even if not a trip hazard.
A good spark at the plugs says forget the ignition side to me until you've exhausted other possibilities. Or am I being misled? There's been no suggestion it slowly died with a stumble and/or tries to catch during cranking. I'd expect basic testing starting at the engine to quickly point the finger in the right direction. I hope Steve now pursues the fuel side testing I've recently suggested before coming back to the ignition side.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now
|
