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My 1990 240 displays CHECK ENGINE codes, runs rich on fuel, puffs black exhaust 200

posted by  1990Volvo240 on  Sat Jul 11 09:59 CST 2009
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last visit: Fri Oct 3 13:18 CST 2014
[RELATED]

My 1990 Volvo 240 Sedan has approx. 240k miles on it. For a while now it has been consuming fuel at a high rate. The ECU had fault code readout 2-3-2 (faulty fuel injectors) and 1-1-3 (fuel system compensating for rich air/fuel mix). It also puffs out small amounts of black exhaust. A trusted and reliable mechanic told me it was the ECU, so I got one used (from a wrecked 1991 240 w/120k miles) and installed it. After a few miles the CHECK ENGINE light came on again and it puts out the same exact codes. The mechanic seems to think I have the ECU I installed is faulty-which seems ridiculous since it reads out the same codes as the last. Does anyone have any ideas?





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