Anyone else had problems with their SB/TB (Accufab) idling high? Mine is idling around 900/1000 rpms. If so,how did you fix it. Thanks.

 

Make sure you correctly lined up the slot on the TPS with the notch in the AFTB. It's been 2 years since I did mine (AccuFab), but if I recall correctly, when looking at the TPS side of the TB, the TPS is sort of pointing at the 7 O'clock position to engage the TPS slot with the Accufab & then you rotate the TPS up to about the 9 O'clock position until screw holes in the TPS lineup with the mounting holes in the TB. This will place a slight spring load on the TPS (internal spring in the TPS) as you will need to hold it with very slight pressure until you get the TPS mounting screws installed. Hope this helps resolve your issues. This is how I installed mine & I have had no issues with it's operation or my trucks performance.

Here is a link on how to check your TPS:

http://webpages.charter.net/roberts1964/tpsadjust

Hope this helps.

 

I have never worked on a single blade however, on the factory TB there is a long screw that controls the butterfly blade. You should be able to adj. it out to lower the idle.

The TPS controls or tells the ecm where the butterfly blade is at.

It can also be set by your programmer.

Peace,

Suavy

 

I had to turn the "butterfly" blade or whatever its called (I'm not very technical) slightly so that it would all line up correctly. My truck seems to idle high at first but it always drops to what it did before the TB. Like I had previously stated this is very impressive for me to do alone, so I can't imagine why yours would always idle high unless something is adjusted wrong. Sorry I am not much help but I am sure someone else can chime in.

Good Luck
Nick

 

Thanks for the help guys. Going to see if I can adjust it today....seeing how I missed the local drag meet today.

 

When I installed my Accufab SBTB 4 years ago on my 01L - when I got off the throttle it would hang up at about 1100 rpm momentarily, then slowly drift down to about 700rpm. I bent the throttle return spring bracket back slightly to increase the tension on the spring - has been fine ever since then -idles about 700rpm.

 

Two things have helped me with tuning the Accuflap.

1. Like Suavy said, you need to get the TPS aligned with a little tension on it. Be sure to use some low-strength threadlocker on the threads of the TPS screws Get some paperclips, straighten them out (leave one end curled) and cross-cut the ends to a sharp point. Insert them into the TPS there the wires plug in, this will give you a very accurate way to read the voltage. Get a friend to help you set it, take your time and get it dead in the mark @ .99V. Open and close the TB a couple of times and check your work. Check the voltage after 2 weeks, and every time you change the oil.

2. Go to AutoZone (or your local parts ***** shop) and get a HELP! throttle return spring (the shorter, fatter spring) and cut 1/2 inch off from the tip of the hook bend, re-bend another hook and utilize it as your throttle return spring. The additional tension will help the TB. Be sure you lube the points where the throttle cables attach and the springs move with some white lithium grease.

This will help you out. You might feel a little tension for the first couple of weeks when pressing the throttle, but over time it will all loosen up and wear in. My TB works perfectly, unlike what a lot of people here report.

 

MasterOfPain......damn.....THANKS Worked great