Whenever I try to start my S70 in the morning, or after several hours since last being driven, it is difficult to start. I will turn the ignition and there will be a slight pause before the engine acts like it is about to stall, then there is a sudden jolt and a surge in the RPMs to 2500-3000 before leveling out. Sometimes the car dosen't start at all, and I have to keep trying 1 or 2 times before it acts like that. I took it to the dealership, but the diagnostic check, cables, charging system, battery, and starter all check out and they couldn't do anything. A friend suggested that it might have something to do with my fuel relay or pump or something like that. Any ideas?
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