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IDLE SURGE 900 1993

posted by  someone claiming to be Susan on  Sun Oct 27 13:45 CST 2013 [RELATED]

Trichard, I just got this car last month, and one of the first things I did (with the fine help of Brickboarders) was clean the AIC valve. When I first checked codes, I got the one for the AIC signal missing or absent (whatever it is). I cleaned it well, and the code hasn't yet come back after driving it 500 miles. I still don't discount that it could be a problem, though. Could this be correct to have a bad AIC and not get a code? I did erase the codes after first checking them.

Not sure if you read the other post in this thread, but I'm driving this car across the country from PA to AZ and back to PA with my dog the third week in November (pretty soon!) to visit my son. The car has about 257,500 miles on it, and I have most all service records, although they are vague, even from the Volvo receipts. It doesn't look as though many of the relays were replaced EVER. In fact, the only relay that I know was replaced was the fuel pump relay in 2003. The car also gets pretty bad gas mileage. I think I'm getting around 14 or 15 mpg/city even using supreme gasoline. I just added a 1/2 pint of Seafoam to the gas, and that's when I noticed the engine surging even more at idle (unless it's all in my head).

:)

Susan





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