TPMS O rings?
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
TPMS O rings?
I am changing wheels on my C5 to C6 five spoke alloys, I am swapping over the TPMS valves but find they are not sealing well, I am unsure if the machining is the same in both types of wheel?
To overcome in the short term I have added an extra O ring around the valve stem and this seems to have cured the problem, but my question is: - is the original O ring on the monitor actually moulded to the valve stem and in the plastic casing? or is it removable and replaceable?
Your thoughts please
Mike.
To overcome in the short term I have added an extra O ring around the valve stem and this seems to have cured the problem, but my question is: - is the original O ring on the monitor actually moulded to the valve stem and in the plastic casing? or is it removable and replaceable?
Your thoughts please
Mike.
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
It's recommended to replace the o ring and such each time you remove the sensor (or at least, by the places that sell the kits to do so).
From Tire Rack: "Many times you can purchase a TPMS rebuild kit if you are trying to re-use your sensors on a new wheel. This would allow your service technician to service any rubber parts or lock nuts that are not designed to be re-used. Usually these kits range from 3-7 dollars each, so a good precautionary measure for sure!"
http://blog.tirerack.com/blog/hot-se...t-great-prices
From Tire Rack: "Many times you can purchase a TPMS rebuild kit if you are trying to re-use your sensors on a new wheel. This would allow your service technician to service any rubber parts or lock nuts that are not designed to be re-used. Usually these kits range from 3-7 dollars each, so a good precautionary measure for sure!"
http://blog.tirerack.com/blog/hot-se...t-great-prices
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
THanks for response, but where do I get a TPMS service kit? I am in the UK so will need to buy online, I did look on tirerack but they only talk about them on the blog, they do not seem to have them for sale.
FYI the Vette is a 2001 coupe but full Euro spec so slightly different to the US models of that year, I believe the sensor assembly is the same but with different frequencies.
FYI the Vette is a 2001 coupe but full Euro spec so slightly different to the US models of that year, I believe the sensor assembly is the same but with different frequencies.
Le Mans Master
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
I changed wheels on my 99. The original o-rings are not molded into the sensor, but mine were old enough that they remained squished flat and filled the groove so that they almost looked like they were molded in seals.
I took out the old seals and replaced them with o-rings I got at our local Home Depot. A package of 10 only cost a buck or two.
They are a #9 O-Ring 5/8" O.D x 7/16" I.D x 3/32"
I reused the nuts.
No leaks in over 2 years.
Good luck.
I took out the old seals and replaced them with o-rings I got at our local Home Depot. A package of 10 only cost a buck or two.
They are a #9 O-Ring 5/8" O.D x 7/16" I.D x 3/32"
I reused the nuts.
No leaks in over 2 years.
Good luck.
Pro
Joined: Aug 2007
Posts: 505
Likes: 2
From: VA
I forgot the exact inch pound torque specs, but it's tighter than one would expect. I would not have tightened them that tight without a torque wrench. Mine leaked when I tightened them "by feel" ...and they leaked. Put the inch pound torque wrench on them and had to tighten them up considerably more.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
THanks for response, but where do I get a TPMS service kit? I am in the UK so will need to buy online, I did look on tirerack but they only talk about them on the blog, they do not seem to have them for sale.
FYI the Vette is a 2001 coupe but full Euro spec so slightly different to the US models of that year, I believe the sensor assembly is the same but with different frequencies.
FYI the Vette is a 2001 coupe but full Euro spec so slightly different to the US models of that year, I believe the sensor assembly is the same but with different frequencies.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
There are TWO types of sensors. The early design that only works with 97-2000 RFA's uses a standard hardware store O ring for the seal and it looks like this:
The 2001 - 2004 TPS Sensor is better was redisigned and operates on a different frequency and will NOT work with the early RFA. It also has a unique seal that looks like this:
The 2001 - 2004 TPS Sensor is better was redisigned and operates on a different frequency and will NOT work with the early RFA. It also has a unique seal that looks like this:
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
Thanks to all for the responses, and it seems from Bills pics that the sensors on my 2001 are the early type so just need to replace the O rings. I cant post pics on here so have sent an email to you Bill with pics of my sensors to confirm exactly what they are, hope you dont mind.
A bit confusing as the according to the cars numbers it is a genuine 2001 and was not registered new until June 2001 but perhaps being a Euro import it still carries some 97-2000 parts?
I will wait for your response to the email Bill before I proceed any further
Thanks again
Mike.
A bit confusing as the according to the cars numbers it is a genuine 2001 and was not registered new until June 2001 but perhaps being a Euro import it still carries some 97-2000 parts?
I will wait for your response to the email Bill before I proceed any further
Thanks again
Mike.
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Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Mike
Please resend the e-mail. For some reason the one that you sent will not open.
WOOPs,, Never mind,, I was able to open it and you DO indeed have the early sensors!! The O rings look very compressed and flat so,, new O rings should fix you right up. I will save the pictures tonight and get them in PHOTOBUCKET and attach them to this post.
Bill
Please resend the e-mail. For some reason the one that you sent will not open.
WOOPs,, Never mind,, I was able to open it and you DO indeed have the early sensors!! The O rings look very compressed and flat so,, new O rings should fix you right up. I will save the pictures tonight and get them in PHOTOBUCKET and attach them to this post.
Bill
Last edited by Bill Curlee; Nov 20, 2011 at 10:06 AM.
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
Thanks Bill you are a star, I have pulled out the old O rings and replaced with new to the spec shown earlier in this thread, final two tyres fitting on Wednesday so will see if the new rings work, if so I will need to pull off the other two tyres and replace the rings in there as currently I have simply added an extra ring which I feel may move over time.
Thanks again for your time and patience
Mike.
Thanks again for your time and patience
Mike.
Heel & Toe
Joined: Feb 2006
Posts: 23
Likes: 0
All 4 TPMS on my new to me 99FRC are leaking. The previous owner put Y2K replica wheels on it. I don't know who made them. Since the TPMS are giving good pressure readings I'm assuming they are the early style since the later style sensor work on a different frequency.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
Team Owner
Joined: Jul 2006
Posts: 22,132
Likes: 4,154
From: Kannapolis NC
All 4 TPMS on my new to me 99FRC are leaking. The previous owner put Y2K replica wheels on it. I don't know who made them. Since the TPMS are giving good pressure readings I'm assuming they are the early style since the later style sensor work on a different frequency.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Ill give this a shot as it is all I have to offer.
IF,,, the new style wheels have different seating surfaces and the O rings will not seal in them, Call the dealer and see if they sell the NEW STYLE seals separately for the NEW STYLE sensors.
If the dealer doesn't have any, see if some local tire shops know if there are any available. You can even call Tire Rack and see if they have any thing that can make them seal properly..
You may be able to make the new style seals work on the old style sensor stems. Its worth a shot..
IF,,,, that fails, go to the hardware store and look in the plumbing department. They sell an assortment of rubber seals for sink faucet seats. You may be able to get creative and get some that you can make work.
Last resort,, a little RTV and the O rings may work.
They also sell a mount that allows you to place the sensor totally inside the wheel and the valve stem that attaches to the will seal properly or the EASY SENSOR that TRIOS posted on.
BC
IF,,, the new style wheels have different seating surfaces and the O rings will not seal in them, Call the dealer and see if they sell the NEW STYLE seals separately for the NEW STYLE sensors.
If the dealer doesn't have any, see if some local tire shops know if there are any available. You can even call Tire Rack and see if they have any thing that can make them seal properly..
You may be able to make the new style seals work on the old style sensor stems. Its worth a shot..
IF,,,, that fails, go to the hardware store and look in the plumbing department. They sell an assortment of rubber seals for sink faucet seats. You may be able to get creative and get some that you can make work.
Last resort,, a little RTV and the O rings may work.
They also sell a mount that allows you to place the sensor totally inside the wheel and the valve stem that attaches to the will seal properly or the EASY SENSOR that TRIOS posted on.
BC
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I found the internal pressure sensor mounting system that I was thinking about. Check out this link:
http://g35driver.com/forums/brakes-s...-work-etc.html
Bill
http://g35driver.com/forums/brakes-s...-work-etc.html
Bill
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Luke
What OEM Sensor serviceable parts are available and what aftermarket equipment is available??
Do you have any repair parts for our Tire Pressure Sensors? I know they sell the replacement Valve Stem Cores. Do you have any replacement seals, gland nuts or caps?
Bill
What OEM Sensor serviceable parts are available and what aftermarket equipment is available??
Do you have any repair parts for our Tire Pressure Sensors? I know they sell the replacement Valve Stem Cores. Do you have any replacement seals, gland nuts or caps?
Bill
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
Fitted the second set of tyres to the C6 18" rims, replaced O rings on the sensors and so far all seems good, I will see how they are after a run and a few days to settle in but it appears the new O rings have done the trick. I just need to pull out the rear sensors and do the same and hope I get the same result.
So does anyone have any idea why I have the "early type" sensors on a 2001 car ? plus what other parts may be from earlier models?
Mike
So does anyone have any idea why I have the "early type" sensors on a 2001 car ? plus what other parts may be from earlier models?
Mike
Drifting
Joined: Oct 2003
Posts: 1,932
Likes: 4
From: Warrenville Il
All 4 TPMS on my new to me 99FRC are leaking. The previous owner put Y2K replica wheels on it. I don't know who made them. Since the TPMS are giving good pressure readings I'm assuming they are the early style since the later style sensor work on a different frequency.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
Are the later wheels machined differently to accept the later style TPMS and seal? I'm worried I have wheels that won't seal with the early style TPMS O-rings. Please tell me that all I have to so is replace some o-rings.
FYI, I have a 99 with the older style sensors and changed my tires out for replica Z06 motorsport style rims with no problems. This style of rim was designed when the newer style sensors were being used (2001 when the Z06 came out) so I would think you would also be ok.
Thread Starter
Racer
Joined: Jun 2003
Posts: 433
Likes: 0
From: Aspenden Hertfordshire U.K.
Hopefully a nice easy question, there has been a lot of talk about the correct torque for these sensor nuts but no actual figures being given, I have searched the forum but found several different recomendations, the most popular for the C5 seems to be 106 inch pounds or 12 Newton Metres does everyone agree this is correct?