Acceleration hiccup?

[Ryan275]

Im having a problem when I accelerate from a stop with my 99 ranger 4x4.

I do not think it is motor related…. This only happens after coming from a complete stop then accelerating. The hiccup doesn’t happen until I press the gas. Nothing happens when I let off the brake and begin to roll. It only happens when I hit the gas. Here is a list of everything I have replaced in the last year that I thought could have caused this problem.

I tried to see if the motor mounts were causing this feeling, but couldn’t tell?

-New shackles with all new bushings in the leafs.
-New Shocks.
-New limited slip carrier.
-All new rear brakes with cylinders and hardware.
-New Transmission last year. Had this problem before and after new transmission.

Thanks for any suggestions.

 

[BRUTUS_T_HOG]

my truck does this occasionally, its the spark plug wires shorting out on the firewall

 

[Ryan275]

I really do not think this is ignition related. It seems like it is something moving? I also replaced the plugs and wires within the last year.

 

[BRUTUS_T_HOG]

well explain "hiccup" it feels like the engine cuts out? or there is a shudder when taking off?

 

[Ryan275]

It is really hard to explain, but is really pissing me off! It feels like something is catching when i hit the gas..... it really doesnt feel like the engine is cutting out.

 

[straycat]

Yes, I know this hiccup you are talking about. I put new plugs and cables on my 99 Ranger and after a few months the hiccup started. It was driving me crazy. I thought it was the MAF, maybe it was time for an induction cleaning. I put fuel injector cleaner in and drove it for another tank full and it was still there. I took my truck to out Goodyear place. I had to pay to get the truck hooked up to the diagnostic machine ($29.95). It was a stupid plug that had a small crack in it. It was the #2 cylinder that was going in and out and causing the hiccup. A new plug installed and it was back to normal....darn, I put new plugs in there...what happened......duh!! Never thought it was a plug since they were all new. Check into the plugs or the cables, Bro.