1998 Mitsubishi Pajero (i think its montero in the states) V6 3.5, 97,000kms.

Just yesterday the car started to idle low and was stalling, after pulling off the road, and atempting to start up again the idle revs were low in the 500-750 range. When i started to make off it was like the car was pulling, like i was towing a house. it had loss of power and i had to really put my foot down to get it going. It stalled 5 times on a 30min trip home.
I think it may be a dirty fuel injector. maybe, but i know the car needs a service, which i will be booking in today.

What do you guys think, thanks for your help..
Blake