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sudden death - brain dead? Ignition control unit? 200 85

posted by  someone claiming to be Bob on  Wed Nov 29 19:03 CST 2000 [RELATED]

Hi guys,

Gotta love it, the blue brick died taking my wife to work. In the rain. On a curve. On a hill. Facing uphill. Dang.

Ok, enough whining. Try the key. Starter turns, 25A fuse OK, clean batt. terminals, chk cables and accessory wires, grounds all ok. inside fuses all ok. Disconnect AMM just for grins & try again - nope. Hmmmmm. No spark, nuttin from coil, no fuel pump noise. Tow it home. Jumper to fuel pump-more grins - ok. Main relay ok on both sides. Dang. Woulda been cheap. OK, pull main connector from ECU and run tests. NOW, here's the rub. I have an 84 shop manual(Volvo) & an 85 car. I don't know how closely the two systems coincide. We ran all the tests for an unstarted engine, skipping the ACV, throttle valve switch, injectors, oil & temp sensors. Minor deviation on the AMM, but diff AMM from book & doesn't figure for absence of spark anyway. To me it points to the ECU, but I have no previous experience with either ECU or Ignition CU failures. Any ideas,

or does anyone have the 85 manual on adobe or know where it is?

Thanks in advance,

Bob.





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