3.3TT vehicle doesn't shift gear under decent acceleration

[D.J.]

Compression on all cylinders is at 150 and kgis says 178 is normal they already replaced an engine for compression and now say that the tech and techline think that the info in kgis is wrong......

LOL - that's kind of hilarious.

178 psi seems very high for a low compression 10:1 engine

 

[D.J.]

Sure enough.... 178 is the minimum (wow)

199 is the design spec - and 178 is the minimum allowed with less than 14psi difference between cylinders.

 

[D.J.]

No it was the transmission temp reading from a logger that I had in the obd2 port. Engine Oil temp was at 200. It will actually get going in 5th gear doesn't like it but it had enough power. This actually happened again yesterday same gear but it corrected itself like all other posters in this thread. I have actually had nothing but problems with this car I'm on my third engine and it is in need of another. Compression on all cylinders is at 150 and kgis says 178 is normal they already replaced an engine for compression and now say that the tech and techline think that the info in kgis is wrong......

Wouldn't it be funny if they were testing the compression on "most" cylinders without taking off the intake manifold - and they were testing with the throttle plate closed for some reason - giving a false low reading

 

[G-623187]

This just happened to me today! Aggressively accelerating on an on ramp in sport mode. Not in manual/paddles, etc. All the siludden the accelerator felt like it lost power and would only accelerate SLOWLY on the freeway. If I pushed pedal down, it revved without acceleration. Any fixes?

 

[AllenJ]

2023 July. I have a 21 GT AWD. Same problem. Happened under all modes, with or without traction control. Only happened when the car came out of a sharp turn with decently high speed. Transmission won’t up or downshift. Goes back to normal after about 5 secs. No issues whatsoever when accelerating in straight line. Took it to the dealer, did a transmission reflash, readapt, no help.

 

[CraigS]

Glad I stumbled on this thread. My 22 does this too. Only after coming out of a hard corner, I floor it, it pulls hard to shift point (not redline, my tcu is programmed to shift -8٪) then it stops accelerating and holds the gear. Let off gas, try again and it's fine. I asked Lozic my tcu guy and he didn't answer. I assumed it was bad programming in the stability control although it's weird that it's delayed until after the corner. But I was surprised people still experience it with stability control off.

 

[kzxo]

This happens to me when I’m in full throttle in both auto or with paddle shifter. My mods are JB4 and intakes. I’ve read all the replies and I still haven’t found a solid answer to this issue. I really want to figure this out! And from one of the replies, sounds like TCU tune doesn’t fix the problem.
I think it happens mostly during 3-4 shift or 4-5 gear shift. Any ideas?