[summerdaze]

When I'm driving my TJ will buck or surge. The tack will jump not drop. This may happen once a day or once a week. Seems to be happening more often lately. No check engine light on. Any ideas or anyone know of this problem.
Thanks,
Bob

 

[foxinthemudd]

what do you mean by buck or surge? like your tack will jump in RPM's? does it stay there?

 

[MOz]

Do you have a manual trans or auto?

 

[my98tj]

this happened to me but mine threw a check engine light when my throttle position sensor went bad.