KenH
Enthusiast
My Viper has developed an intermittent problem. Sometimes when giving it some throttle either from a stop or on the open road, it starts bucking like it is getting a complete power cut which is coming and going about once a second. Backing out of the throttle causes it to run OK.
It may be RPM dependent. Once when it was acting up, each time I slowly increased RPMs to a little over 3000RPM, it would start bucking. When it did. the WBO would read about 11:1 instead of the normal 14.7 A/F. It makes me think that I am getting an electrical cut of some kind. When I would let off the throttle, it would run OK. I have only noticed the problem at part throttle.
I checked the TPS and it seems to read smooth over its range. I'm thinking perhaps something like the crank position sensor or coil pack. I know if I just take it into the Tech, it will run fine.
It may be RPM dependent. Once when it was acting up, each time I slowly increased RPMs to a little over 3000RPM, it would start bucking. When it did. the WBO would read about 11:1 instead of the normal 14.7 A/F. It makes me think that I am getting an electrical cut of some kind. When I would let off the throttle, it would run OK. I have only noticed the problem at part throttle.
I checked the TPS and it seems to read smooth over its range. I'm thinking perhaps something like the crank position sensor or coil pack. I know if I just take it into the Tech, it will run fine.