Notices
Tuning, Diagnostics, Electronics, and Wiring HP Tuners | EFILive | Hand Held Programmers | Stand Alone PCM's | Electronics | Wiring Diagrams

truck will not shift at wot

Thread Tools
 
Search this Thread
 
Old 07-31-2012, 04:23 PM
  #21  
TECH Senior Member
iTrader: (10)
 
nonnieselman's Avatar
 
Join Date: Oct 2004
Location: Crystal Springs, MS
Posts: 14,068
Likes: 0
Received 2 Likes on 2 Posts
Default

Yea, it depends on what PID he logs as to what TPS value you will see
Old 07-31-2012, 04:41 PM
  #22  
TECH Junkie
iTrader: (9)
 
Gadgetized's Avatar
 
Join Date: Jan 2010
Location: Rochester, NY
Posts: 3,095
Likes: 0
Received 3 Likes on 3 Posts
Default

Try this at your own risk, that should get you shifting in the 5200 RPM range.

A couple things, you are pretty agressive with removing timing under boost. Why do you want to shift at such a low RPM? If you are using the cam in your sig, that thing is begging for RPM's.
Attached Files
File Type: tun
Andy_0001.tun (477.3 KB, 56 views)
Old 07-31-2012, 04:57 PM
  #23  
TECH Senior Member
iTrader: (10)
 
nonnieselman's Avatar
 
Join Date: Oct 2004
Location: Crystal Springs, MS
Posts: 14,068
Likes: 0
Received 2 Likes on 2 Posts
Default

Prolly cause his injectors are maxed
Old 07-31-2012, 05:10 PM
  #24  
TECH Junkie
iTrader: (9)
 
Gadgetized's Avatar
 
Join Date: Jan 2010
Location: Rochester, NY
Posts: 3,095
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by nonnieselman
Prolly cause his injectors are maxed
Oh yeah, that's right.
Old 07-31-2012, 05:15 PM
  #25  
Mod with training wheels
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,740
Received 204 Likes on 139 Posts
Default

Originally Posted by Gadgetized
A couple things, you are pretty agressive with removing timing under boost.
Nothing wrong with that when you're learning
Old 07-31-2012, 05:51 PM
  #26  
TECH Addict
Thread Starter
iTrader: (14)
 
AndysC3's Avatar
 
Join Date: Jun 2009
Location: Minot, ND
Posts: 2,884
Received 10 Likes on 8 Posts
Default

I have the 100% throttle set to 25 so that it will command the shift at 5200rpm. And injectors are maxed at 5300-5400. Once I get it to shift I may move the shift up as long as I have injector. Somethings up with my fuel system. Just installed a new FPR and now it wont hold fuel pressure with the key on and is at 54psi with the engine on and vac line removed. This is the one I got
Amazon.com: Delphi FP10021 Fuel Injection Pressure Regulator: Automotive Amazon.com: Delphi FP10021 Fuel Injection Pressure Regulator: Automotive
Fuel filter was also replaced about 8 months ago.
Old 07-31-2012, 07:18 PM
  #27  
TECH Fanatic
iTrader: (1)
 
1Bear's Avatar
 
Join Date: Aug 2006
Location: Jones Creek, Texas
Posts: 1,410
Likes: 0
Received 8 Likes on 8 Posts
Default

Originally Posted by smokeshow
That's a trait of DBW. They are open at idle 15% or so...flooring it only adds 85% to open the throttle all the way. Log throttle position to see actual value, not accelerator pedal position.
I agree, this is common in most DBW GM trucks, yet while I haven’t even taken a peek at Andy’s tune, something that is common to the factory tune on the C³’s and its DBW system is a commanded ETC Limit vs RPM vs % Max Available Torque setting of 83%. I don’t know why GM chose to do this on these early systems and changing the tune closer to 100% setting doesn’t seem to have ill effects, to the contrary actually. I would be careful though, as in some cases people have REP problems when going beyond 98% or so depending on the individual throttle body, if the TPS believes it’s gone past 100%.
Old 07-31-2012, 07:45 PM
  #28  
TECH Addict
Thread Starter
iTrader: (14)
 
AndysC3's Avatar
 
Join Date: Jun 2009
Location: Minot, ND
Posts: 2,884
Received 10 Likes on 8 Posts
Default

the 101 log I was not at full throttle until frame 1160. At wot it will go to 100% then drop to 99.6%.

Last edited by AndysC3; 07-31-2012 at 09:45 PM.
Old 07-31-2012, 08:22 PM
  #29  
TECH Junkie
iTrader: (9)
 
Gadgetized's Avatar
 
Join Date: Jan 2010
Location: Rochester, NY
Posts: 3,095
Likes: 0
Received 3 Likes on 3 Posts
Default

I had initially looked at log 102, and didn't see it going far enough to go into WOT. When I opened log 101, I could see it opening properly.
Old 08-03-2012, 06:21 AM
  #30  
Admin
iTrader: (22)
 
03sierraslt's Avatar
 
Join Date: Jul 2004
Location: Western PA
Posts: 19,004
Received 217 Likes on 173 Posts
Default

So have you figured anything out?


Quick Reply: truck will not shift at wot



All times are GMT -5. The time now is 01:27 AM.