Outer Limits 4x4 Board

My work ute has got a bit of a flat spot and im tryin to figure out wats causing it...

Its a 2.6 EFI any ideas anyone??

Gday Ray,

Ive got a 1988 Jackaroo with the 4ZE1
It could be throttle position sensor.
Then again it could be anything
oxygen sensor,air flow meter,fuel pressure regulator
Sorry i cant be of any help.
Im ripping the 2.6 out and dropping in a 3.8 commo V6
Brad

if the air flow meter got wet it could be it mine used to play up abit sometimes used to be lazy then other times would go like hell and blow flames out exhust looked really good with the flames and make sure your sitting down when ask holden for a new 1 i was told $1200