My 98 xj starts stalling or bogging out if I don't let it warm up for a few minutes before driving. Any know what may be causing this problem. already changed the tps sensor.

 

hrm... more info? video?

 

Mine did the same thing, bog and fall on its face about 30 seconds into a drive with a cold start. turned out to be a issue with my upstream o2 sensor, i replaced the sensor and while doing so found some corrosion on the inside of the plug on the harness side. after repairing this no problems for the last 30,000km
Good luck!

 

Awesome. Hopefully that's the problem. Thanks for the help