Q: Hilux wont run properly.1995 Toyota Hilux

Hi there, congratulation on your high-miler! The first task is to review the problem codes stored in the on-board diagnostics. Although not OBD II, they should still be helpful in guiding your diagnosis. I would suspect fuel supply problems given that some of the symptoms come and go - perhaps a weak fuel pump, clogged fuel filter, injectors. Dirty throttle body or idle air controller is also likely. I would recommend a engine performance loss inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.