Why is my car not droping 2 gears when i floor it?

[alacran1]

It was fine before. It just stopped dropping 2 gears. When it was working fine the RPM would rise all the way to 5k then go to 6k and change gear. Now it doesnt.
Here is a vid of it acting up. http://s951.photobucket.com/user/alacran100/media/2013-05-09_20-48-34_514_zps2bd3215f.mp4.html
http://s951.photobucket.com/user/alacran100/media/2013-05-09_20-26-44_637_zps73f2e57f.mp4.html

My engine codes are only my egr and my second o2 sensor.
My tranny lights is caused by a speed sensor.

 

[Poodles]

IIRC it won't do much of anything right if there's a tranny code, fix it.

It could also be the PWR button...

 

[alacran1]

I forgot to add that I think I might of had jacked up the tps because I sprayed the connections with electric cleaner and shortly after I did this the problem started happrning. I didnt let the electric cleaner dry up after hooking it up because I had to go to school. U think thr tps is bad? I got a extra one I migjt just hook it up yo see if it does a difference. Because the car ran good before even with the speed sensor code.

 

[Poodles]

Possibly. Keep in mind the TPS is a wear item and it's best to replace if it's having issues. Also, because of the way it functions, using electrical parts cleaner is fine, if you then replace the dielectric grease that was removed. It's been a while since I checked, but I think they're "sealed" but not quite. Plus if you removed it entirely it's definitely out of adjustment.

 

[alacran1]

How do i adjust my tps? The one in tsrm looks confusing. Any tips?

 

[Poodles]

Go to the end of that section you're in The first one you hit is a check for it, the end has how to replace and calibrate.

 

[alacran1]

u talking about this page http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101

The thing i want to know is what should your ohms be when it is in at idle and WOT?

I have a cressida so my tps is like the GTE but im not sure if the volts or ohms are the same.

 

[Poodles]

Negatory: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=103

 

[Nick M]

My tranny lights is caused by a speed sensor.

Kind of narrows it down don't you think? The trans does not have a governor valve or throttle valve. It has a speed sensor and TPS to calculate shifting.

 

[alacran1]

I tested my TPS and found out that is a total mess. My numbers:

Key on "ON" position.

At Idle:
VC-E2= Gave me "0L"
VTA-E2= Gave me "0L"
IDL-E2= 52 kΩ

Full Throttle:
VC-E2= 6.68 kΩ
VTA-E2= 4.30 kΩ
IDL-E2= If i remember right it showed "0L" (didnt mark it down)


So i got it back to idle and numbers changed:

VC-E2= It was "0L" changed to 6.68 kΩ
VTA-E2= It showed "0L" changed to 1.242 kΩ
IDL-E2= It showed 52 kΩ changed to 69kΩ


Is it messed up or does it need a adjustment?

 

[Poodles]

So wait, you're testing it with it plugged in?

 

[alacran1]

By plugged in you mean the connector? If so no, i removed the connector and used the actual metal pins. It is still installed in the TB. Ive seen people poke the wire plastic with a pin and go from there but i just removed the connection cable.

 

[Rollus]

My tranny lights is caused by a speed sensor.

Without speed sensor, your ECT won't work and your transmission is in a sort of limp mode.
Shifting is then just controlled by hydraulic system with the throttle adjusting hydraulic pressure.

Kind of narrows it down don't you think? The trans does not have a governor valve or throttle valve. It has a speed sensor and TPS to calculate shifting.

Hum, please see my answer to OP above

I tested my TPS and found out that is a total mess. My numbers:

Key on "ON" position.

At Idle:
VC-E2= Gave me "0L"
VTA-E2= Gave me "0L"
IDL-E2= 52 kΩ

Full Throttle:
VC-E2= 6.68 kΩ
VTA-E2= 4.30 kΩ
IDL-E2= If i remember right it showed "0L" (didnt mark it down)


So i got it back to idle and numbers changed:

VC-E2= It was "0L" changed to 6.68 kΩ
VTA-E2= It showed "0L" changed to 1.242 kΩ
IDL-E2= It showed 52 kΩ changed to 69kΩ


Is it messed up or does it need a adjustment?

Yes, it is out of spec if you check correctly.

To benefit of all the performance of your gearbox you need to fix TPS as showed by Poodle and fix your speed sensor.

 

[alacran1]

My ECT works fine though.. Im going to replace my tps with another one i got from the junkyard from another cressy. Hopefully i wont make things worse lol

 

[Nick M]

Hum, please see my answer to OP above.

I don't need to see anything. I am not the one with the trans problem.

It just stopped dropping 2 gears. When it was working fine the RPM would rise all the way to 5k then go to 6k and change gear. Now it doesnt.

Oh wait.

My ECT works fine though..

Sucked in again.

 

[alacran1]

Im getting codes
27- Sub o2 sensor
24- Intake Air Temp
31- Air flow sensor
41 TPS
71- egr
I give up.. lol

update: i disconnected the battery for couple minutes and plugged it back in and now it only shows 27-for sub o2 . im going to take it out for a spin, hopefully it will just give me 27 and 71 like always.

 

[alacran1]

After loosening both the throttle cable and transmission cable it shifts perfectly lmao. I guess i had it too tight. ::hang::

 

[Nick M]

After loosening both the throttle cable and transmission cable it shifts perfectly lmao. I guess i had it too tight. ::hang::

Well, that had no effect on anything other than raising main line pressure. Until you loosened it. That only effects shift quality at low speeds.

 

[alacran1]

So you think the cpu got the right reading out the tps after i reseted the cpu?

 

[jetjock]

Ugh. When are you guys gonna learn?