Many moons ago - about a year after I bought my Volvo, I had some difficulty that prompted me to take my Swedish-Steam-Roller to a mechanic. Among other things, the "mechanic" informed me that I needed a "new" Ignition control Unit. Previous to this, I believe that the ICU I had was a 1317873. At the time, I had virtually no experience with anything automotive beyond changing oil and filling up the gas. I examined my records from the period, and find nothing exact concerning the ICU that was in my car before the "mechanics" got a hold of it. The "replaced" ICU appears to be still working just fine, but when I picked up my car all those many years ago, the ICU looked exactly the same as the "old" one except that the blue number label was missing. I was told that it was a "new" used part. Although I couldn't prove it at the time, I suspected that they just removed the blue label and left my old ICU in place and charged me for a replacement. Like I said, I knew nothing about the fact that many mechanics simply belong in jail. I was wide-eyed and naive, and probably had a neon sign flashing above my head that read, "SUCKER". I now find that I have become somewhat obsessed with finding out what the number of my ICU is. Does anyone know of another way to identify what ICU I might have other than by the missing label? The illustration describes my car.

The number you think it was: 1317873, is the only one listed for K-Jet FI, so if yours is working OK that's probably the number (which was superseded by part number 8111227). Tasca's current price is $442.36.

P.S. Please use smaller (narrower) pictures so the text can be read more easily.

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Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

Hi Bruce,

I also thought of that method of verification: if it works in the k-jet config it must be right. Then, I looked up the external electrical differences, because I remember some of those V/C units were incompatible across the years.

What I found was those up until the B230 with LH2.2, the ignition (rpm) signal is taken from the same lead that drives the coil, and then, with LH2.2, a separate logic-level pin was provided (pin 8) to keep the really high-energy stuff out of the loom going to the ECU.

So my conclusion is any of the four V/C units used in B21F and B23F cars would play in the k-jet car. How well is the question. I suspect the differences would be seen in subtle variations of advance curve, resulting in non-ideal MPG or emissions control, not in some driveability problem easily noticed by an owner.
Perhaps even the later V/C units would work, given the pin 8 difference is only a requirement of the LH2.2's harness arrangement.

I figured Troy's question stemmed from the suspicion the label was removed to disguise the fact an incorrect (but ostensibly working) substitution had been made.
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Art Benstein near Baltimore

Evening news is where they begin with ‘Good evening’, and then proceed to tell you why it isn’t.

Bruce, Thank you for your information, I appreciate it. Concerning the image size, I have only recently learned how to even put images in, and now they are too big! LOL! I do see what you mean, though, concerning the "compressed" appearance of the text. I'll work on getting them smaller. Unless the image size is important to the post. Thanks again for your informative reply.

I'm stumped.

If you click on this pic you get a big pic of the innards of a 1317295 for the automatic B23F. Nothing like an inside packing list hiding.


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Art Benstein near Baltimore

The voices in my head may not be real, but they have some good ideas!

Art, thank you for your response. I was fairly certain that my question was going to unanswered simply because the question is fairly obscure. I appreciate the image you posted, and I agree with you - there is no information (that I can discern) inside the ICU that tells what the ICU number is. I've looked myself, and haven't found anything either. I was just hoping that someone might know if there was another way to tell. So far, it seems that there isn't. So far as i know, the only way is know what the chain of custody is - i.e. knowing what car the ICU came from - or ironically - looking at the blue label on the unit. Oh well, I guess some things will never be known - like where Black Beard the pirate buried his treasure, and how to tell what ICU you have without the blue label. Thanks for your response, Art - sigh.

Oh, I'm sure someone knows... I just figure he or she works for or has retired from Injection Labs or Programa.... or Chrysler.
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Art Benstein near Baltimore

Light travels faster than sound. This is why some people appear bright until you hear them speak.