I have a 1999 bi-fuel contour. The last time I filled it up with CNG, it wouldn't start again. I assume my compuvalve is shot because I have been smelling the natural gas for some time. So for the time being I am just running it on reg gas.
I have the switch on the dash turn to reg gas mode and the car runs ok, but the gas gauge is stuck on full. I have since pulled the reg gas tank unit and tested it with an ohm meter and the sending unit appears to be working. So now I think my fuel gauge is reading the CNG tank and not the gas tank even though I an in reg gas mode. Could there be a stuck relay or something? Does the dreaded compuvalve also control the fuel gauge source? I wish I had a wiring diagram for this thing. Another thing, my car always seemed to run with less power in CNG mode vs reg gas mode, it is running like I am in CNG mode.
I have the switch on the dash turn to reg gas mode and the car runs ok, but the gas gauge is stuck on full. I have since pulled the reg gas tank unit and tested it with an ohm meter and the sending unit appears to be working. So now I think my fuel gauge is reading the CNG tank and not the gas tank even though I an in reg gas mode. Could there be a stuck relay or something? Does the dreaded compuvalve also control the fuel gauge source? I wish I had a wiring diagram for this thing. Another thing, my car always seemed to run with less power in CNG mode vs reg gas mode, it is running like I am in CNG mode.
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