Hitting rev limiter?

[gkrcr882]

After adjusting my TV cable, when I hold the truck WOT it pulls hard, but hits the rev limiter before shifting. Is it possible to "over-adjust" the TV cable? My truck shifts out of first under normal/light throttle at 3300, and its a very hard shift, not like what the Sy had. The following shift into third is hard as well, more like a kick (feels like hitting a bump). I'm mostly sure it's not overboosting, since I was watching my gauge (and glancing up at the road) during my last WOT run, and it never went past 15 psi. Didn't feel like knock retard, and the tach was about 5300 when it was cutting out.

 

[boosteds10]

Re: Hitting rev limiter?

How did you adjust it? Open the throttle under the hood by hand or used the pedal?

 

[gkrcr882]

Re: Hitting rev limiter?

I think I have it figured out, I'm pretty sure it was detonation after all. Disconnected the EGR vacuum line to reduce IATs and it nearly fixed it. I adjusted the TV cable by hand, since the shifts were too high IMO using the pedal technique.

 

[cloneman315]

Re: Hitting rev limiter?

do it at the tb

 

[gkrcr882]

Re: Hitting rev limiter?

Yeah, thats what I did. I think I may put a 180* t-stat in, I'm fairly certain it's IAT/detonation related.

 

[cloneman315]

Re: Hitting rev limiter?

put a 160 ,wbo2 and datamaster on it before it blows up

 

[gkrcr882]

Re: Hitting rev limiter?

Thats the plan, I have TunerPro R/T, I just need a link cable.

 

[gkrcr882]

Re: Hitting rev limiter?

Still hitting the rev limiter, it's running up to 5500 and cutting out. Could this be due to a bad torque convertor or different governor weights? I do not know if anything has been done to the trans.

 

[dgoodhue]

Re: Hitting rev limiter?

Still hitting the rev limiter, it's running up to 5500 and cutting out. Could this be due to a bad torque convertor or different governor weights? I do not know if anything has been done to the trans.

Its most likely the transmission. You could try changing the governor first. You mentioned it shifts 1-2 at 3300 and hard, the transmission might be going out, that is what my Corvette 700 did before it let go (hard late shifts and higher WOT shifts)

 

[turbodig]

Re: Hitting rev limiter?

x2... Band slipping.... seen it lots of times.

 

[gkrcr882]

Re: Hitting rev limiter?

Great... I did notice that there was a manual lockup control installed, so hopefully it's just the governor that was tweaked. The shifts feel fine otherwise, and it normally over revs on the 1-2 shift only.