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Frankensaab's ECU/wiring problems
Posted by Kenzo [Email] (more from Kenzo) on Wed, 8 Aug 2007 12:28:26
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OK, so I knowingly bought (cheaply) someone else’s problem……..but it’s so pretty!
It’s a ’92 900S Convertible with a ’90 turbo engine. ECU, ECU wiring harness, AIC and AMM are all proper for the ’90 turbo engine (AIC and AMM are new!). There is an ignition control unit (0 227 100 139) and an APC in place of the EZK unit.
Symptoms: Car starts fine and runs fine for anywhere from 1 to 10 minutes. Then it suddenly “lopes” and nearly dies on even light acceleration. While it’s “loping” there is a clicking sound coming from the ECU while the CEL and Shift-Up lights flash in unison. After a minute or so, it returns to normal, sometimes with CEL illuminated, sometimes not, and then the cycle repeats.
Can anyone tell me where to begin to track down this problem?
BTW, pulling codes reveals little. I get 12111 and 12112 or nothing but the initial 12231. Also, I have tried another ECU (Bosch -948) with no change in symptoms. Something’s got to be wired wrong somewhere or there’s a fundamental incompatibility between the ’92 33 pin main fuse/relay bus and the ’90 2.4 ECU harness, right?
posted by 216.228.23...
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