Disconnect the batt. should put it in relearn atleast it does on the 01's.

 

I disconnected the battery with no big difference but found out if the motors running it will go down to 10% at idle. The 15% was motor off and key on. If I remember right back in the beginning the throttle plates would freeze shut in winter. The 15% with no motor running may be to leave it cracked open a tad.

Anyways, I took the pedal out and metered the TPS. It's smooth as glass. The resistance increases very progressively as i stroke the pedal. I was going to remove the sensor but it has the Torx screws with the pins in the center.

 

Thats normal. Every electronic tb truck i've tuned will have the tps between 15%-8%, doesnt matter, so dont worry yourself about that.

Now I will tell you... that studder might be simply that the throttle body is dirty. Take if off and clean it out with brake cleaner, carb choke cleaner, whatever you like. The sensors and the opening of that intake get extremely dirty and it will actually cause studder or lag issues when dealing with the electronic throttle body.

recently on an 04-05 truck, we had a studder issue and a knock retard issue. The studder issue is what i just stated, dirty tb, and the knock retard issue was bad knock sensors and the holes that they screw into were completey nasty and corroded to the point that they wouldnt work with even a brand new sensor. Put in new sensors, shop vac'd the hole they screwed into, bat. terminal cleaned it, new pig tail just incase, and it was as good as gold. We also silicone the hole up real good around the knock sensor so that wouldnt happen again.

Where are you located? I can look at your tune for you if you want.

 

Thanks, the sputter is rare and I'll do some cleaning. I also get a harsh 1-2 shift once and a while and heard the TPS can cause that to. So I just wanted to test it. It bench tested very well.

I'm in Cartersville. I would love a second opinion on my tune. If you are ever going to be closer by this way let me know.

 

Alright will do

the tps will cause a harsh upshift... but it will also cause it to shift early or not at all.

has it ever done that?

if you did have a tps sensor problem you'd throw that code. I had a tps code for years, never knew how to get rid of it, replacing the sensor didnt work... apparently w/ this cam it was pushing my tps signal out of range and into the error-range. Meaning, if i didnt hold the idle above 1k rpms when at a stand still, the tps code would throw, truck would go into limp mode, shift harder than hell and go early into each gear and fall flat on its face. Several years later, i figured out how to correct it in the tune... im pretty sure it only applies to us reg. wire driven tb people, but its worth a shot if it starts to be a huge issue.

 

I think the damn DBW TB is the most sensitive and watched sensor on these trucks. 90% of the codes and limp modes I've thrown with my truck and modding have been for the dang TB. If there is something wrong with it, it will let you know

 

lol ya... is there a way to change from dbw to cable?

 

TPS-throttle position sensor
PPS- pedal position sensor

Drive by wire TB have this two systems
TPS located at the TB
PPS located on the gas pedal

Are you loking at the right sensor assembly?
Please correct me if I'm wrong!!

 

Someone correct me too.
I'm looking at the sensor on the pedal. I only see a servo motor on the throttle body. The controller or servo is riveted on so there is no easy testing of a position tester if one is there.
The prints I have show the sensor on the pedal as a throttle position sensor. It also has cruise control circuits.
Everything I see indicates a single sensor. Let me know.

 

SSlow 4.8 - you have a PM.