2.9 bogs down over half throttle
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New User
Joined: Dec 2007
Posts: 13
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2.9 bogs down over half throttle
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
Senior User
Joined: Mar 2006
Posts: 126
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From: Noble, LA
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.
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New User
Joined: Dec 2007
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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 !!!
New User
Joined: May 2013
Posts: 11
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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!
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!
New User
Joined: May 2013
Posts: 11
Likes: 0
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 !!!
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Elder User
Joined: Oct 2010
Posts: 602
Likes: 1
From: Maryland
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.
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