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Hi Bryan,
Most importantly, you got her home. The prospect of having the dead Volvo to return to will give you and us all a challenge in the interim.
When I was on the phone with her it was night & it was raining. I was afraid to have her trying to get a spark. But she did the paperclip jumper on the fuel relay connector. (Would that be the same as jumping at the fuses?)
Yes, you are right, it would. I missed the part where she tried to start it with the paper clip in place.
A wire off of the bottom of socket 6? I like that idea. That one explains to us why you might have no codes whatever from socket 6 in view of the solid reputation of the ICU. It doesn't account for things not in our experience (my experience), like for instance, I can imagine a leak ran water into the ICU.
It was a struggle just to have her find the little OBD box. When the 25 amp fuse was invisible (evidently the 1992 doesn't have one)I had her email me some photos under the hood. [Still haven't figured out what that big orange connector is for... it had a blue wire and it was near the location that I expected to see a fuse holder: blue is for battery, right?]
Post the photo she sent. My battery ground wires are blue. Or email it to me and I'll post it.
I wanted to do the test where you push the OBD button twice and it goes through the sequence of making the EGR and injectors "click" and I think it also checks the crank sensor. It sounds as though you are writing from memory. The output test that sequences injectors and the idle valve occurs after three presses. The input test that supposedly tests the CPS happens after two, but my memory says that needs socket 6 to work.
If the car was not 4 hours away, I was mentally picturing a gallon of fresh gas, spark, crank sensor, swap a 561, coil, fuel regulator, ohm meter on the ECU, et cetera... I have two parts cars that were still drivable but "totalled." My 240 love affair, in fact the whole Volvo kick, was driven by the emphasis on tuition and de-emphasis on transportation expenditure. I suspect many of us have multiple 240s for similar reasons.
One thing that I've never had a problem with is the "power stage."
Does the 1992 have one? (It is not a regina ignition of that I am certain.) What happens when a power stage goes south?
No 240s are Regina cars. The power stage is located in front of the battery in a very dirty, vulnerable spot. A bit of corrosion on its connector, from "battery air" or just rain can cause a no-spark.
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Art Benstein near Baltimore
The journey of a thousand miles begins with a broken fan belt and leaky tire.
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