TPS adjustment??

KCLawntamers · 12-16-2009, 10:47 PM

OK i have seen a couple of post that said you could adjust the tps with a bolt up under where its mounted. If this is the case anyone have a picture because I dont find it on my truck. It is a 97 12v.

vice97 · 12-16-2009, 11:30 PM

I should know this but, what is a tps

Badger · 12-17-2009, 01:36 AM

TPS = Throttle Position Sensor. Here's the link; TPS testing and adjustment if it doesn't work then go to forums page and scroll down to tech articles 2nd Gen 94-98. There is a lot of great information there.

KCLawntamers · 12-17-2009, 08:30 AM

My tps isnt slotted. It is a fixed mount. I am going to get a new tps from a parts house, im sure mine is just out of range/worn out. I alreadt tried drilling them out and rotating but could get close to spec. It started at .352 volts and the closest i could get was around .756 volts.

Joe G. · 12-17-2009, 09:43 AM

Read this: TPS myth buster - TDR Roundtable

illflem · 12-17-2009, 11:56 AM

Way out of scale but you should be able to figure it out.

KCLawntamers · 12-17-2009, 09:24 PM

I will be doing a write up on adjusting a tps soon with pictures. Dont slot you tps mounting holes. This is not the proper way. You have to adjust the rod positioned below it to ramp up you tps voltage.

illflem · 12-18-2009, 12:05 PM

Messing with the rod adjustment to adjust the TPS is totally incorrect.
Changing the rod adjustment different than the specs below will shorten your rpm range.
The enlarging the the mounting hole method is recommended by the most highly respected diesel tranny builders.

Joe G. · 12-20-2009, 02:52 PM

It works better to install a potentiometer (pot) in the ground wire to the TPS than mutilating the TPS. If you use a pot you can adjust the OD shift points to some extent. Another way is to eliminate the TPS from the circuit by replacing it with a pot in the cab. If you do that you have control over OD and lockup shift points, but kick down does not work. The TPS is just a poorly designed pot that is operated by the throttle cable.

12-16-2009, 10:47 PM	#1 (permalink)
KCLawntamers Cummins Fan Join Date: Dec 2009 Posts: 72 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews KCLawntamers's Truck Pics	TPS adjustment?? OK i have seen a couple of post that said you could adjust the tps with a bolt up under where its mounted. If this is the case anyone have a picture because I dont find it on my truck. It is a 97 12v.

12-17-2009, 01:36 AM	#3 (permalink)
Badger Cummins Fanatic Join Date: Nov 2007 Location: San Diego, CA Posts: 106 Thanks: 17 Thanked 3 Times in 3 Posts iTrader Score: 0 reviews Badger's Truck Pics	TPS = Throttle Position Sensor. Here's the link; TPS testing and adjustment if it doesn't work then go to forums page and scroll down to tech articles 2nd Gen 94-98. There is a lot of great information there. __________________ 95 CTD 2500 STD Cab 4X4, KDP Tabbed, Boost/Pyro, AFE Stage II, 4" MBRP Exhaust, ATS Exhaust Manifold, BD T/C and Trans w/ Torq Loc, DDP STAGE II INJECTORS, #10 PLATE, 62/65/12, CFM+ Intake, HID Head lights, ROL BAK Cover, Carli Starter Kit and Track Bar.

12-17-2009, 09:43 AM	#5 (permalink)
Joe G. Diesel Head Join Date: Apr 2007 Location: Eureka, CA Posts: 1,799 Thanks: 2 Thanked 53 Times in 50 Posts iTrader Score: 0 reviews Joe G.'s Truck Pics	Read this: TPS myth buster - TDR Roundtable __________________ KDP tab fix info and fuel system article jgeorge1@suddenlink.net '95 2500 CC auto 4X4, 3.54, EGT, boost, fuel pressure, trans temp guages, PacBrake, TST #5, DTT VB, DTT triple disk TC, DTT billet flex plate, Cummins chrome kit.

12-17-2009, 11:56 AM	#6 (permalink)
illflem Super Moderator Join Date: Nov 2005 Location: Montana Posts: 7,453 Thanks: 6 Thanked 424 Times in 359 Posts iTrader Score: 0 reviews illflem's Truck Pics	Way out of scale but you should be able to figure it out. __________________ Bill '95 2500 4wd auto '95 3500 5 speed heavy hauler Stock for one day

12-18-2009, 12:05 PM	#8 (permalink)
illflem Super Moderator Join Date: Nov 2005 Location: Montana Posts: 7,453 Thanks: 6 Thanked 424 Times in 359 Posts iTrader Score: 0 reviews illflem's Truck Pics	Messing with the rod adjustment to adjust the TPS is totally incorrect. Changing the rod adjustment different than the specs below will shorten your rpm range. The enlarging the the mounting hole method is recommended by the most highly respected diesel tranny builders. __________________ Bill '95 2500 4wd auto '95 3500 5 speed heavy hauler Stock for one day

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12-16-2009, 11:30 PM	#2 (permalink)
vice97 Newbie Join Date: Nov 2008 Posts: 25 Thanks: 1 Thanked 1 Time in 1 Post iTrader Score: 0 reviews vice97's Truck Pics	I should know this but, what is a tps

12-17-2009, 08:30 AM	#4 (permalink)
KCLawntamers Cummins Fan Join Date: Dec 2009 Posts: 72 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews KCLawntamers's Truck Pics	My tps isnt slotted. It is a fixed mount. I am going to get a new tps from a parts house, im sure mine is just out of range/worn out. I alreadt tried drilling them out and rotating but could get close to spec. It started at .352 volts and the closest i could get was around .756 volts.

12-17-2009, 09:24 PM	#7 (permalink)
KCLawntamers Cummins Fan Join Date: Dec 2009 Posts: 72 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews KCLawntamers's Truck Pics	I will be doing a write up on adjusting a tps soon with pictures. Dont slot you tps mounting holes. This is not the proper way. You have to adjust the rod positioned below it to ramp up you tps voltage.

12-20-2009, 02:52 PM	#9 (permalink)
Joe G. Diesel Head Join Date: Apr 2007 Location: Eureka, CA Posts: 1,799 Thanks: 2 Thanked 53 Times in 50 Posts iTrader Score: 0 reviews Joe G.'s Truck Pics	It works better to install a potentiometer (pot) in the ground wire to the TPS than mutilating the TPS. If you use a pot you can adjust the OD shift points to some extent. Another way is to eliminate the TPS from the circuit by replacing it with a pot in the cab. If you do that you have control over OD and lockup shift points, but kick down does not work. The TPS is just a poorly designed pot that is operated by the throttle cable. __________________ KDP tab fix info and fuel system article jgeorge1@suddenlink.net '95 2500 CC auto 4X4, 3.54, EGT, boost, fuel pressure, trans temp guages, PacBrake, TST #5, DTT VB, DTT triple disk TC, DTT billet flex plate, Cummins chrome kit.

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