TPS Question
Thread Starter
Instructor
Joined: May 2004
Posts: 150
Likes: 0
From: Spartanburg SC
TPS Question
I have a 2000 C5 And just received new TPS and new nuts from Gene Culley. I see an O ring on the TPS but what seals the TPS to the wheel on the outside? Just the pressure from the nut? Please help, these are the first TPS I have ever seen and not sure how they mount.
Burning Brakes
Joined: Sep 2006
Posts: 985
Likes: 0
From: Cumming Georgia
You are correct
Just the nut. I also have a 2000 (but wished it was 2001 when it came time to buy the sensors 
) and just had all four put on. All you need is the nut on the outside. I noticed the O-rings came on the new sensors, and I just re-used the old nuts. No problems.
Tim Glover
BTW, Great color!
) and just had all four put on. All you need is the nut on the outside. I noticed the O-rings came on the new sensors, and I just re-used the old nuts. No problems.Tim Glover
BTW, Great color!
Last edited by TopFuelTim; Feb 27, 2007 at 07:48 PM. Reason: Color not
Racer
Joined: Nov 2002
Posts: 278
Likes: 1
From: Bushwood MD
Only seal you need is on the inside. You're trying to keep the pressure from leaking out, not the outside air from leaking in.
Seriously, the nut pulls the seal tight to the inside of the rim which is machined smooth to provide the sealing surface. Just make sure the inner wheel surface is clean, your TPS seals are clean (I lube mine slightly with a silicone lube) and torque the nuts properly (don't remember the torque spec right off hand).
B/R,
Randy
Seriously, the nut pulls the seal tight to the inside of the rim which is machined smooth to provide the sealing surface. Just make sure the inner wheel surface is clean, your TPS seals are clean (I lube mine slightly with a silicone lube) and torque the nuts properly (don't remember the torque spec right off hand).
B/R,
Randy
Burning Brakes
Joined: Sep 2006
Posts: 985
Likes: 0
From: Cumming Georgia
Here's the torque spec
Had to break down and read the instructions
. I got this from my Helms manual. "Tighten the nut to 12 Newton Meters (106 inch pounds)." Make sure you use inch lbs, not foot lbs
. Don't laugh too hard, I've seen it attempted.In reality, when I had them put on, the guys just tightened them with a small ratchet. They had worked with TPS before, so I wasn't too worried.
I thought the same about looking like twins. Good looking ones too!
Tim Glover
Burning Brakes
Joined: Sep 2006
Posts: 985
Likes: 0
From: Cumming Georgia
02's are definitely cheaper!
I don't know about the differences between and '02 and an '00 sensor, except for the BIG price difference. I'm envious of you on that point. If you divide 106 inch lbs by 12, you get 8.83 foot lbs. It isn't very much, for sure.
Tim Glover
Tim Glover
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
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Le Mans Master
Joined: Feb 2002
Posts: 6,937
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From: Waldorf MD
106 in-lbs is for the early years (1997-2000) sensors. They use an o-ring.
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
OK, sorry I should have read this one a little closer. TPS in my mind is the Throttle Position Sensor, but the thread was on Tire Pressure Sensor. Man, too many acronyms, it's almost like work 
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 243
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
106 in-lbs is for the early years (1997-2000) sensors. They use an o-ring.
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
106 in-lbs is for the early years (1997-2000) sensors. They use an o-ring.
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
62 in-lb is for the Type II sensors (2001 up). They use a grommet (gasket). Although I did find this in the 2002 Shop Manual:
Install the sensor nut and position the sensor body parallel to the inside wheel surface while torquing. Tighten
For domestic vehicles tighten the sensor nut to 7 N·m (62 lb in).
For export vehicles tighten the sensor nut to 12 N·m (106 lb in).
I am not sure why the export vehicles used a higher torque ?
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
I remember having this discussion once in the past. Your value for 2001 up is higher than the published manual and I remember you saying you got the values from an online update or something. Can you post where you got this from? Might be a good source for future reference
Drifting
Joined: Oct 2003
Posts: 1,932
Likes: 4
From: Warrenville Il
My 99 sensors would leak air pressure slowly in really cold temps, and nothing in 40F+ temps. used a deepwell (metric) if I believe socket wrench and just snugged it a little bit more and voila no more leak in the winter months.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 243
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Robert