Quote:
Originally Posted by Jeff Higgins
I would start by looking at fuel delivery. Maybe as simple as a plugged filter. Under power, the motor is using more fuel than can be delivered, when you let off and the demand lessens, supply catches back up for a moment. Then, running under power again, it can no longer supply enough fuel to meet demand and the cycle starts anew. Classic plugged filter symptoms. If it's not that, maybe the tank vent is plugged. Start there, and if you don't find a problem, then start digging deeper.
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One thing I failed to mention. The first time that it "lost power" on acceleration, I let of the gas and the car backfired. It has never done that before. It also did not do that again on subsequent occasions when it lost power. Just that first time, it let off a deafening backfire. Not sure if that additional symptom helps narrow down the source of the loss of power.