I have a 1991 xt6...one morning the car would start, but would not idle, I had to keep pulsing (pushing down/letting up, etc.) on the accelerator to keep it running. Car would not run at high RPM unless I keep flucuating the pedal. Fuel pressure is bascially 35 psi (but does drop a bit below 35 psi as i floor the pedal...psi comes back up when i back off off the pedal)...cleaned throttle body..... plugs, wires, etc. look good......computer code flashes "11"..but Subaru tells me there is no crank angle sensor on this car......any suggestions????