Ok its a XJ 2000 4.0L auto
6.5" lift sye 33s
When you hit the pedal to the floor the engine rpms go up like normal but the jeep barely moves thought brakes were locked or something went down the block moved max 15-20 mph. Went up a hill bogged down completely stopped put it in 4 High nothing put it in 1&2 gear finally went up the hill just barely. Hear a pop and scraping sound from the front but that could be something else.

Is it transmission?
Transfer case?
Differential?

 

Check tranny fluid... maybe slipping on low fluid??? If it was rear gears, I would think that 4wd would have given you movement with the front...

 

True i will check the level tomorrow also thought maybe torque converter

 

I know the fluid level thing sounds dumb, but happens to everybody...

 

I honestly hope it is

 

Nope fluid levels are max gonna check the transfer case fluid tomorrow or later today. It drove fine before has been sitting on an angle for over a year until the other day started right up too.

 

I had similar running issues like you described when my catalytic converter went bad, one of the filter blocks inside came loose and was choking it out.

 

What gears are you running?

 

Stock i just got the jeep

 

X2 on this.

 

On a 2000 the cats are next to the headers correct?

 

I believe only on the California emissions models. But you'll have to crawl under there and look

 

Yeah its two cats after headers is there any way to know for sure its kinda a woods jeep not my daily xj kinda don't wanna spend money on new cats when it doesn't fix it you know

 

Any way you can rent a scan tool to monitor exhaust?

 

probably but its not throwing codes maybe i will cut or unbolt them to see inside