Engine Performance problem
2000 Subaru Outback 4 cyl All Wheel Drive Manual 134000 miles
The car starts fine and can move on level terrrain with acceptable power, but going uphills it will accelerate fine in the 750 to 2500 rpm range in gears one and two, but once the engine approaches 3000 rpms the power fails and the car won't go any faster regardless of how much gas the engine gets. If I let off the gas there is enough power to move but no power for acceleration. Trying to give it more gas decreases power. There are currently no error codes( I have replaced the front o2 sensor and the catalytic converter, new plugs and wires). The intake manifold has a steady vacuum reading, but the compression test for all cylinders is around 175 psi except for cylinder two is at 150 psi. These readings are within specs. Any ideas? I have tested the MAP sensor and IAT sensors and they both pass. The fuel filter was replaced less than ten thousand miles ago.
have the same problem?
Saturday, August 16th, 2008 AT 12:42 PM