|
- Ground O2 signal wire: dwell gradually (about 10 seconds) decreases and engine starts to die. Assume this means the frequency valve is doing its job?
Mike,
My suggestion would be to get a manual and try to understand how the system works, then do the basic troubleshooting. The FV is a variable pressure regulator, it is a pulsed injector in a return line. When it is dead, pressure goes up, the more it pulses, the more fuel bled off and pressure goes down. In CIS lambda, there is an inverse relationship between lower chamber pressure and mixture. The higher the duty cycle, the lower the pressure and the richer the mixture. When you ground the sensor wire, you are doing the rich stop test, the ECU see zero voltage and the duty cycle should immediately go to 95%, the opposite of your result. The FV is the actuator, this is a test of the ECU.
__________________
Paul
|