been trying to diagnose an intermittant issue with my saab. 91 2.1 with a 5 speed. Under load while accelerating it will sometimes lose power.. Sometimes as if I had cut the ignition, othertimes as if running on 3 or less cylinders. Clutch in and revving can cure it.. As can sometimes flooring it "through" the issue.. At the same time the CEL comes on abd gives me th code for knock sensor.
car has had a complete tune up except for the fuel filter. I am still spraying that down beforre attempting to remove it. I hing the filter is original (234,000 miles)
