Surging

[Ski]

I am a new owner of a 96' Bronco with a 351. Noticed a surge at low speeds (25-30 MPH) Its odd, if I try to mainain a 25 or 30 MPH speed it surges and is indicated on the tach as well. If I step on the gas it stops and accelerates normal. It does not happen in park or neutral just under a load. Anyone have any ideas? My thoughts are fuel feed system, maybe a clogged fuel filter or dirty injector.

 

[murph]

I think it is the driver.

 

[Ski]

HMMMM........let me think about that! nope isnt me. Dont you have some work you should be doing instead of being on here??????? [-X

 

[murph]

HMMMM........let me think about that!  nope isnt me.  Dont you have some work you should be doing instead of being on here??????? [-X

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No, I quit. )

 

[Ski]

No, I quit. )

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NOT ALLOWED!!!!!!! :-"

 

[bluesman17]

Fuel sending unit maybe, mine will feel a little strained then all of a sudden its hauling and peppy. Im just to lazy to drop the tank till it demands my attention.

 

[Ski]

Fuel sending unit maybe, mine will feel a little strained then all of a sudden its hauling and peppy. Im just to lazy to drop the tank till it demands my attention.

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Is there anyway to test the sending unit without draining and dropping the tank?

 

[Bully Bob]

"Is there anyway to test the sending unit without draining and dropping the tank?"

Huh..? :huh: fail to see how a sending unit can cause surging... unless they mean the pick-up tube (strainer) being somewhat plugged.

Fuel filt. or a weakening pump would be good guesses. B)

 

[murph]

I think you need to sell it to me. I'll take good care of it. >

 

[Ski]

I think you need to sell it to me.  I'll take good care of it. >

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Sure I will sell it to you Murph......6200 and its all yours! b-(

Think I will try the fuel filter first then the pump

 

[gump_black]

anouther cheap idea would be to get a bottle of air intake cleaner and spray your butterfly valve inside your throtle body

 

[Ski]

anouther cheap idea would be to get a bottle of air intake cleaner and spray your butterfly valve inside your throtle body

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ok....I woud try that, however, on fuel injection what throttle body are we talking about? /emoticons/[email protected] 2x" width="20" height="20" />

 

[gump_black]

i call it throtle body, old habit. just spray the butterfly valve. sometimes it builds up carbon residue and will start wanting to stick causeing the engine to start surging. mine did it in idle parked, and idle in gear.

 

[Ski]

i call it throtle body, old habit. just spray the butterfly valve.  sometimes it builds up carbon residue and will start wanting to stick causeing the engine to start surging. mine did it in idle parked, and idle in gear.

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Thx, I will try that. Today my check engine light came on. Engine still runs great however. Might be O2 sensor??

 

[American Rebel]

Check the TPS, that's what happened to the bronco of mine before I bought it....