Log the pids GM.TRTQENG.fltb and GM.TFMPRS.psi to make sure they go high when throttle opening is large...
if they do not, then trans line pressure is going to be low.
Is the trans all back together now (so was that material from the converter clutch...?)...?
Yank didn't say much about what the found and my builder firmly believes it was from the converter. So idkOriginally Posted by joecar
Got it back in and just did a drive around the block and check the fluids and 15% throttle feels fine. But what would cause it to go 10 afr when I lift my foot and coast then when I tap the gas go lean then back to 14.7 when I'm on the gas?
Your minimum injector pulse is set too high.
Vengeance had set up the injectors and had them set at minimum pulse width .805 for 0, 400, and 800 rpm but jumps to 1.276 after that.
I adjusted to .805 all rpm and and problem went away. Now I just need to get the VE inline again, has allot of afr swing now. Should I set default min pulse to
Match?
What kind of torque or holding pressure should I be at cruising 40, 60 mph etc?
Yes.
Factory settings... unless you can detect some slip.
Here is my last log. It appears cruising at 35-45 at times I'm commanding 0 psi
I think you might be confusing torque signal pressure with line pressure. Even at 0psi torque signal pressure, you're still going to have about 55psi line pressure... which is generally sufficient clamping pressure for situations where the engine isn't producing much torque.
It's the WOT pulls which is destroying your transmission, not your cruising. Ask your builder if he's fitted a stiffer slide spring in your pump. Without that, you'll keep burning up your 3-4 clutchpacks.
Transmission # 2 was after cruising about an hour at 75, got off into the city and 3 & 4 were gone. He claims everything has been upgraded except two things that he claims I don't need at my power level but I was willing to buy. Sonnax 3-4 drum and going back vacuum.
All I can think of is maybe to get your builder to hook up a line pressure gauge and test to see if your commanded torque signal pressure is producing sufficient line pressure.
TFMPRS follows MAP, so it's ok, it has a range 0-96 psi which maps to line pressure range 55-230 psi, see what stateman said above.
did he make sure the 3/4 clutch hydraulic circuit did not leak.
did he make sure that the pressure regulator did not leak (there's boost valve upgrade kits).
did he install stiffer pump slide spring as statesman said above.
there's a few other things to look out for...
even tho line pressure may be correct (sufficiently high), if the 3/4 clutch hydraulic circuit leaks, then the 3/4 clutch will slip and overheat and destroy itself.
Last edited by joecar; February 10th, 2016 at 03:00 PM.
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