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Bad ECU?? 200 1991

posted by  dcstyle1 on  Wed Sep 16 13:59 CST 2009
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last visit: Mon Jun 28 13:47 CST 2010
[RELATED]

My 91 240 runs but bogss when accelerated. Have had it at two shops, one being the local Volvo dealer. Was told it needs a mass air meter. Replaced it and still the same problem. How can I test the ECU to see if it is the problem? Also does any one have a wiring diagram with the voltage on it. Mine just shows where the wires go not what reading they should have. At my wits end but cant let go of her just yet. I am getting codes for the mass air meter and air control valve. Both are good.






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