1996 4.0L Cherokee. HELP PLEASE Was out today and when trying to pass some cars floored it quite hard. Engine only revs to around 2500 then drops back to around 1700 then goes up and down but with NO power. It feels like fuel starvation. Any ideas where to look PLEASE +THANKS--just filled it with fuel and tried again.seems ok when cooler but fault comes when warmed up. could it be electrical?? any ideas PLEASE

 

Do you run Catalytic Converters in Scotland? Sounds typical of a clogged cat/muffler.

Try tapping on the exhaust listening for particles inside that can clog flow while running.

 

Hi yes we do but had new one fitted just months ago . thanks for reply

 

Only seems low on power when you attempt to pass?

Have you attempted to adjust the trans kickdown cable? Is this an automatic?

Replace the fuel filter?

Do you have a Factory Service Manual?

 

Only when looking for bit of power. do not have a workshop manual. how many fuel filters are there ? is there an inline one underneath? could it be electrical as seemed ok till was well warmed up thanks

 

Inline filter along the drivers side unirail above rear axle.

Is it showing a Check engine light?

 

No nothing at all is all as it was . i took it out a while ago and kickdown took it up to redline but when warmed right up started playing up again thanks for your time I appreciate this