Hi. just looking for some help if possible. My Navara has not been used in a few months as I was away but since I started using it again it's down on power. It starts no prob and sounds fine but but is very slow to get to 100 km and really struggles to go over that. Going up hill it just keeps slowing down. It's an auto and seems to be changing gears no prob maybe a little slow to kick down. There is no black smoke or any warning lights. It can rev over 4000 no prob and I don't think it's the turbo.
Anyone any ideas?