Truck doing the huckle buck

[swilliams1005]

When i am driving approx 30mph and up just barley pushing the pedal the truck feels like it is losing fuel and it startes to huckle buck,,ive been told its the O2 sensor anyone else have any ideas,,, already replaced the TPS sensor didnt help

[dbunn]

Fuel Pump? Does it happen anywhere else like WOT?

[swilliams1005]

WOT??? <<What is that,,I dont think its the fuel pump as loud as that thing is and when im acclerating it does fine

[snoman]

WOT??? <<What is that,,I dont think its the fuel pump as loud as that thing is and when im acclerating it does fine

 

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WOT is Wide Open Throttle, Also I had a surging/bucking problem in my 89 burb at part throttle at certain speed about 5 years ago and it went away after I replaced the plugs and wires and the cap too. It never missed under power, only at light throttle.

[swilliams1005]

^^^thats what mine is doing at light throttle,and the wires,plugs,cap,and rotor when the intake was replace approx 1month ago

[asilverblazer]

Make sure they got the wires on good.

[snoman]

^^^thats what mine is doing at light throttle,and the wires,plugs,cap,and rotor when the intake was replace approx 1month ago

 

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Is it okay if you put your foot into hard and ride it there for a bit?

[AirForceAngler]

My '95 Tahoe did that and I had to have the cap, rotor, wires and coil replaced. Fixed it right up!

[bry21317]

My 00 Yukon Denali had the Super loud Wining fuel pump also. I replaced all the normal electrical stuff, thinking this was causing my bucking when I got on the pedal. What ended up fixing it was the Fuel Filter, once I replaced this, my pump no longer wines super loud and the car has more all around power. It also has no misses at idle, as it would do before.

 

I would give this a shot, expecially since you state that your Fuel Pump is wining so bad.

 

Later,

Bryan

[swilliams1005]

^^^thats what mine is doing at light throttle,and the wires,plugs,cap,and rotor when the intake was replace approx 1month ago

 

<{POST_SNAPBACK}>

 

 

 

Is it okay if you put your foot into hard and ride it there for a bit?

 

<{POST_SNAPBACK}>

 

 

 

 

I tried it last night there,,it jumps a little at full throttle till i backed out at 95mph i think its the pump not doing its job

 

 

 

My 00 Yukon Denali had the Super loud Wining fuel pump also. I replaced all the normal electrical stuff, thinking this was causing my bucking when I got on the pedal. What ended up fixing it was the Fuel Filter, once I replaced this, my pump no longer wines super loud and the car has more all around power. It also has no misses at idle, as it would do before.

 

I would give this a shot, expecially since you state that your Fuel Pump is wining so bad.

 

Later,

Bryan

 

 

Just had it replaced back in December