Low RPM hesitation from a complete stop

[Figman]

Hello all:

I searched for TPS related problems but I am still searching. Someone suggested it could be a bad TPS sensor.

My Disco II '01 with 75K started doing this first a couple times a month but now is happening almost every time or it goes away and comes back few days later, at first I thought it was because the engine was cold but now is becoming a problem.

When I am at complete stop and I press the gas to take off the RPMs drop and looks like the engine is going to stall. I don't have bad idling or hesitation at a stop or once the truck is moving, it is only happening when I take off and don't have any service engine light or codes. I even brought it to my LR guy and he drove the truck after the engine was off for a couple hours and guess what? The truck did not do it. He did not check with the Testbook computer. I don't want to get stuck in the middle of nowhere.

As always your help is greatly appreciated

Figman

 

[adriatic04]

is it whenever or only after a certain condition is present? I have read that if it is after a long highway haul it can be the transmission something or other sticking, which is what happens with mine.

could be over or underfilled transmission?

 

[Figman]

My first impression was that only did this when the engine was cold, then I suspected when at a traffice light the truck will roll back slightly and then move forward. I don't know if there is something sticking somewhere, but my transmission was service at 60K, on every oil change my LR indy guys check the fluid for proper level. Like I said it used to do it a couple times here and there but now is more often. Just this morning, I got stuck in traffic on a local highway and as cars will start moving as soon as I pressed the gas pedal the RPM will drop you feel the 1 or 2 second hesitation and then it will accelarate fine without any "missing on the engine or rough running. it is weird and I believe this is going to lead to something more serious, no check engine lights or nothing.

Thanks for your input

 

[adriatic04]

http://discoweb.org/forums/showthread.php?t=52583

this is what I was trying to describe, same sorta thing?