Ok local dealer has no idea, it went away for one day but it's back, they didn't know if I rebuilt the motor if it would fix it. My maintenance req-light is on. It seems this problem is at low RPM's or when I gas it with the overdrive on it surges or misses unless I keep pressing the gas pedal it goes away. Could it be the ICM? The one day I drove it everything was fine shifted nice, idled fine it was perfect. Also can I use and electrically stuff from a 3.0L Montero to help diagnose the problem or does it have to be a 3.5L?

 

Do you have a check engine light on?

 

might help if you tell us whats under the hood.

 

no the check engine light is not on. It's a 3.5L.

 

DOHC or SOHC?

and what has happened up until now? Have you broken a timing belt? How many miles on it? What have you done to it?

you need to give information for people to help.

 

Injectors cleaned, grounds checks , new coils, plugs, wires, throttle components re-places, 178k miles, timing belts fine, replaced vacuum cv something,

 

do a compression check.. you will almost assuredly have low compression in one cylinder.