AWD - Hesitation, "stumbling' at times when accelerating

Volvo AWD 850 Forum

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Hesitation, "stumbling' at times when accelerating 850

It started about 3 months ago. My 850 turbo started hesitating, bucking and stumbling while accelerating. There was certain condition before it would start happening. At random times, it would start bucking and hesitating. I could mash the accelerator and everything would smooth out. About a month after it started, the fuel pump went bad! I replaced it and the filter and thing were good for a while. Then the symptoms came back. A week later it left me stranded. Would not start. I checked and it had fuel and fuel pressure. I eventually tried a camshaft sensor, plugs and wires. Cranked it and it started up without a problem! It has been running great for a month and today the symptoms returned!!! I'm running out of ideas.... Someone please give me some idea of what is going on.

 





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New Hesitation, &quot;stumbling' at times when accelerating [850]
posted by  snowdog540  on Thu Feb 23 22:34 CST 2012 >

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