Surging / bucking at low speed / RPM

[BLWN 4D]

Having an issue with my car surging / bucking at low speed / RPM. If I’m slowly driving through a parking lot, the car will begin to surge and buck and gradually get worse and more violent until I push in the clutch and let the idle catch back up again. Then it will be ok for a few seconds until the bucking starts again. Any suggestions? Thanks in advance.

 

[magnj]

mine does this at low rpms too but give it a little gas and it's fine...I assume it is normal up to a certain point. What RPMs does it begin/end at

 

[wythors]

Mine has done the same thing since I installed the e-cam. I attribute it to the lumpy idle. I'll change it out eventually.

 

[LtDavis]

how old are your o2 sensors? My car was acting like that and new O2s fixed it.

 

[shewitt]

Mine did that when my FP was off

 

[1993SSP]

Looking at your mods, a dyno tune with a custom chip will solve all your issues with bucking at low speeds, I had mine done last week and I could not believe how much smoother it made my car.

 

[mustangfan1990]

Mine has been tuned and still does it. At low rpms the cam is wanting to lope as it does at ilde. That is why I think it does it

 

[VNMSNK97]

My car is having the same issues but haven't tracked down the problem yet. Yes I realize this post is several months old! Car has fcam with ported stock heads and intake.