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1990 wagon ECU compatibility question! 200

posted by  Jakeinthebox on  Sun Dec 24 08:12 CST 2006
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last visit: Sun Jun 9 22:23 CST 2013
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I picked up a '90 wagon yesterday, 145,XXX miles, bad ECU for $400.

It's the Bosch 0 280 000 556, but other ECU's can work, right? How can I find out which ones are compatible?

http://epic.mcmaster.ca/~bill/volvo/database/ECU1.htm has a list of ECU numbers and years. So long as I find one compatible with the year and Air Mass Meter, it should work? Thanks!
--
*Jakob Lunden* 1984 242 DL, transitioning from beater to classic, 1979 242 GT improving with age, 1968 Saab 96, impulse purchase








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1990 wagon ECU compatibility question! 200

posted by  yama on  Sun Dec 24 11:34 CST 2006
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last visit: Fri Oct 25 05:26 CST 2013
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I also picked up a 1990 240 last year that had a bad 556. The 556 is used with EGR. Like Dan indicated the 933 and 946 are replacements. If you can't find one for a reasonable price send me an email. I have a couple of spares.








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1990 wagon ECU compatibility question! 200

posted by  pageda on  Sun Dec 24 08:58 CST 2006
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last visit: Fri Oct 24 13:18 CST 2014
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If you need the EGR functioning you will need a 933 or 946. The 951 and white label 561 will also work but does not have the circuit that controls the EGR system. Dan







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