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My 1991 740GL cuts out and stalls, at both low and high speeds, when engine is hot. I've had the fuel filter, both fuel pumps, engine speed sensor and idle speed motor replaced, along with a fuel injection cleaning. Neither my mechanic nor the Volvo dealership can figure out why. Stalling occurs without warning. The fastest it has occured was @ 75mph; it frequently stalls in street rafic at 30-40mph, sometimes when slowing down and other times at steady speed. Engine restarts within 30 seconds to 4 minutes. Can anyone help solve this mystery?
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