I talked to Dan about my earlier shifts occuring after installing the 52mm fastman throttle body and he told me to mess around with the TV cable to try to get it fixed. I'm not exactly sure but if I pull the TV cable housing outward, is that going to make ALL shifts occur later? And vice versa. Doesn't seem like he thinks its even worth me trading in the 52mm for the 50mm, so again, another mod that I've felt nothing with :/ I'm really having no luck with this truck. All these mods and the only things I've gotten is a cool sound and messed up shifts.

 

Speaking about shifting, when do your trucks normally shift at normal driving acceleration? If I didn't let up on the gas, mine use to shift normally at maybe a little less than 2500 RPM and OD when my speedo was at 40mph, so rougly 43-44 mph. Now, it shifts about 200 RPM quicker, and about 4 mph sooner into OD leaving me at roughly 1200 RPM when going into OD which equals no power. Takes a few seconds for the truck to pick up again. I could make the shifts later but then I'm not sure how good it is to have the tranny shift that late going from 1-2 and 2-3. What do yours normally go at? This is mainly directed to the 5.9's out there as I'm assuming it's most likely different with the 5.2's.

 

under normal driving conditions it should shift into third at around 35 mph

 

I've tinkered with the TV cable before....In fact I found a site that had detailed pictures and explanations of what it does when you adjust it one way or the other. Basically, I noticed if you tighten the cable (toward the firewall) it gives the truck firmer shifts. If you loosen the cable (towards the throttle body) it gives lighter shifts. I really didn't like the changes either way. I looked at 3 different vehicles, and the cables were in three different locations. I just adjusted it to my throttle body...when the throttle cable starts to pull the throttle open, it also starts to pull the TV cable. This adjustment seemed towork the best for me. You really have to be careful not to go too far either way, or you can do major damage to the transmission.

 

Yeah I've tinkered with it too after going over a pdf Dan sent me. I think I have it set a couple notches outward from stock position. The thing I don't like about it, without letting up on the petal to let it shift, it shifts to 2nd at about 2000 RPMs, but shifts to 3rd at close to 2500 RPM, and then OD at about 40-42 mph which is too low for my tastes. Not sure why it shifts so early to 2nd but late to 3rd and then early to OD again. When it shifts to OD at 40-42 rather than like 45-46, you can feel the truck slow down because it goes down to between 1000 and 1200 RPM.

 

here, try this... pulled from elsewhere...

1. Turn engine off,
2. Remove air cleaner
3. verify that lever on throttle body is at curb idle position. Then verify that the transmission throttle lever is also at idle (fully forward) position.
4. Slide the throttle valve cable off of the throttle body. Carefully slide cable off stud, do not pry or pull cable off
5. Compare position of cable end to attachment stud on throtle body lever.
Cable end and attachment should be aligned (or centered on one another) to within 1 mm in either direction.
If cable end and attachment stud are misaligned (off center) cable will have to be adjusted.
6. Reconnect cable end to attachment stud. Then with the aid of a helper, observe movement on transmission throttle lever and lever on throttle body.
If both levers move simultaneously from idle to half-throttle and back to idle position, adjustment is correct.
If transmission throttle lever moves ahead of, or lags behind throttle body lever, cable adjustment will be necessary. Or if throttle body lever prevents transmession lever from returning to closed position cable adjustment will be necessary.
Adjustment Procedure
1. Turn ignition off.
2. Remove air cleaner.
3. Disconnect cable end from attachment stud on t-body. Carefully slide cable off stud, do not pry or pull cable off
4. Verify that transmission throttle lever is in fully closed position. (curb idle)
5. Pry the T/V cable lock inot the UP position. This will unlock the cable and allow for adjustment.
6. Apply just enough tension on the T/V cable to remove any slack in the cable. Pullin too tight will cause the T/V lever on the trans to move out of its idle position, which will result in an incorrect cable adjustment.

I tried this a while back and it seemed to help pull the slack out of the cable.

 

Thanks steve, I'll have to check mine out again. Is that saying there needs to be an adjustment if when the gas is pressed, the throttle valve cable moves differently than the entire throttle body bracket assembly? That would seem like a pretty easy thing to correct.

 

I think the way it's intended to be adjusted is that there is little to no slack in the cable when the TB linkage is in it's closed position. as soon as you move the throttle, the TV cable should move with it. the adjuster is a ribbed piece that allows for very fine adjustments.I dont have any pics otherwise i'd post it...

 

Ok thanks, I will definitely check it out.

[IMG]local://upfiles/21486/7439F5970F5A4626A7C150031541BEAD.jpg[/IMG]

[IMG]local://upfiles/21486/A4AA2EA1730542B99C2C470CD8391A47.jpg[/IMG]

 

Thanks for the pics. I am going to double check mine, as I don't think the truck is shifting quite right.