My Cherokee bucks when I hit dips or bumps on freeway. It also does it when going up or downhill. I've taken it to trans shop and unable to pinpoint problem. I have no codes displaying either. any tips will greatly help.

 

Been chasing this for a while, replace your TPS Sensors, MAP sensor and clean out the IVAC with throttle body cleaner.

If none of that works its 99% probability its the fuel pump.

I would say its 80% probability now but fuel pumps are annoying to change and that stuff is all like 10$ at a upull so try that first.

 

I have replaced tps and tested every sensor I can think of. I did buy a tps that was faulty brand new, but have replaced it. I also drained and replaced trans fluid(atf4) and filter. I even redrained and put another new filter after noticing the bucking. I don't get any rpm drops. Wouldn't a bad fuel pump make rpms drop? This has been driving me nuts.