as long as you ease down on the throttle its ok, but push it down hard it bogs down, let up an gets power back. thought it was the fuel filter but changed it, no difference HELP its my work transpiration

 

Mine is having idling problems. Am sure it's either the Throttle Position Sensor on the intake or the Idle Air Control Valve. In your' case it definitely sounds like the TPS. That's what i'd check first.

 

well, had to take it to the mechanic. he thinks fuel pressure problem. will update when i find out.

 

got it, was a fuel pressure problem. 23 lbs of fuel pressure, not enough. replaced fuel pump an pressure reg. runs great, i live in oregon we have ethanol fuel.10 % it eating our old stuff up!!!! if you have any power problems , idle ,acceleration, power surges, first thing CHECK FUEL PRESSURE .I drive a tank truck an see first hand what this stuff is doing.its not good,cut open old pressure regulator not much left of it , hope this can help others out,with out going to the shop, cus its expensive, thanks for the help !!!

 

My Bronco II was having Similar issues. If You have a Stick, I would say that You May want to Look into the Clutch! I check into it with mine and sure enough that is all it took!

 

Bogging down when You Give it More Gas? If You Have a Stick Shift, Look into The Clutch!
We were having a Bog Down Issue With Our Bronco II, And the clutch seemed a bit off!
Replaced the Slave Cylinder and Pressure Plate, Now She Runs Perfect!

 

Check into the Electronic Brain that is under Your Distributor!

 

I had the same problem with my 88 2.8 5-speed, it was the Idle Air Control Valve which I replaced. I also removed and cleaned the throttle body.