Cenobyte

Can anybody tell me where on the rim these tire pressure sensors are on a 1999 Coupe automatic?

I am going to install new tires and I'm afraid to damage the sensors when removing the old tires.

TIA,
Mario van Ginneken

Shylor

Find the air valve stem and that's it. The base is behind the stem but, the stem is part of the sensor. It's the stem part that holds the sensor in place.

LoneStarFRC

:iagree: Just have the tire changing people be very careful when removing the old tire and stay away from the valve stem if at all possible. The sensor sits back up under the bead far enough that it shouldn't be a problem when the bead breaker comes around, but have them be careful just in case.

Robert

Cenobyte

Thank you guys,

I'll pass the info on to the 'tire guy' :D

EHS

:banghead: :banghead: :banghead: :banghead: :banghead:

NO! NO! NO! NO!

Don't "Just have the tire changing people be very careful when removing the old tire and stay away from the valve stem if at all possible..."

and

"it shouldn't be a problem when the bead breaker comes around, but have them be careful just in case.".

You'll screw up your sensors with this kind of advice. Jeezzz... that's what I like about this forum.

Read this link instead:
http://www.hunter.com/pub/undercar/PPT/emtdemnt.htm

Hunter Engineering makes the equipment that changes your tires. Here's part of what the link says:

"Demounting Corvette C4/C5 "RunFlat" Tire): ... Remove the valve core. Remove the sensor retainer nut (11mm). Drop sensor into the tire."


[Modified by EHS, 9:48 AM 3/7/2004]

Cruises

Great information to "file" for future use. :thumbs: :thumbs:

Wt99C5

Here's a pic of the sensor.

1st Car

EHS - Thanks for the great advice - I had the misfortune of picking up a nasty metal chunk this weekend and learned that not all Goodyear Tires Stores are capable of changing a Vette tire for two reasons...One they don't know how to handle the sensor (a copy of the tech info you suggested is now in my glovebox) and two they don't have jack pads! Pretty disgusting when you think the manufacturer would certainly be able to take care of these high products they "value" so highly!

EHS

Not a problem at all, 1st Car. Glad I was able to help out.

Welcome to the forum.
:smash:

LoneStarFRC

Well thank you EHS for the kind words. :rolleyes: After having two different sets of tires removed (and new ones mounted), I know it is not, I repeat NOT necessary to follow the factory procedure of removing the outer nut and allowing the sensor/stem assembly to drop inside the tire before removing/mounting the tire. And yes, I was there watching this procedure both times!
My original post in this thread is correct, despite all the emoticons, bold type and exclamation points in your post.
I don't just get on this forum (or any other) and just answer peoples questions, just to be answering questions. If I haven't done something, or watched it done, I say so, or just don't respond to the post.
BTW, if you would like the name(s) and addresses of these shops, let me know. I will be happy to provide that information for you. One of them is a forum vendor here in Houston.
:chill:

Robert


[Modified by LoneStarFRC, 3:58 PM 3/7/2004]

EHS

No problem, LoneStarFRC. Glad I was able to help out, and I apologize for all this misinformation I was posting.

Thanks to your input, I've already shot off a quick e-mail to Hunter Engineering (the manufacturer of the faulty tire changing equipment), to let them know their web site information is incorrect. I can't stand it when these large corporations mislead the "little guy" all the time!

I'll follow up with a phone call to them on Monday, and also to my Chevy dealer, so I can also set C4C5specialist straight, and let him know that he has been changing the tires on my car incorrectly the last three and a half years. Probably on a lot of other Corvettes as well, since that's basically all he works on.

You see, I get to watch too -- and I stupidly have not only the original EMTs to deal with, but also the snow EMTs and a set of Z06 wheels/tires -- all with tire sensors, and all where I've watched and been woefully misinformed -- until now, thank God.

Through the dealership, he unfortunately uses a lot of Hunter products, including their wheel alignment rack, the GSP9700, and the TC3250, so he's probably been misinformed all along as well (through no fault of his own, I'm sure -- it was probably those people at Hunter Engineering who sold him a bogus bill of goods).

I'm sure he'll be glad to know that instead of just dropping the tire sensor into the carcass and getting on with the job, all he has to do now is "be very careful" although "it shouldn't be a problem" but to be "careful just in case."

Excellent input. This is what makes CorvetteForum so great. Thank you again. :cheers:


[Modified by EHS, 1:53 AM 3/8/2004]

Dope

I have done it both ways. It's perfectly fine either way. No one needs to get huffy over it. The only real danger is when they are using that crowbar to lever the tire off the wheel, they could potentially hit the sensor if they didn't know it was there. It's low profile enough to not get hit when you go to remove the tire.

Dope

NYCHASM

Your information may be what ONE particular dealership/tire changer does...that doesn't make it correct. How can you just "shrug off" the factory procedure and boldly exclaim, "I know it is not, I repeat NOT necessary to follow factory procedure..." "Your" procedure just may damage the sensor. Using the factory procedure eliminates all possibility of damaging the sensor. You sound like the kind of guy that will crawl under the car supported only by the jack and not stands because "I know it is not, I repeat NOT necessary to follow factory procedure."

Give us a break! :rolleyes: Do it right or don't do it at all!

Then you have the audacity to lambaste EHS for detailing the ABSOLUTE CORRECT PROCEDURE. Now that's nerve. :mad

Only a few days ago I posted on another thread my concern that a member wasn't taken to task for posting misinformation. In that instance, the use of the misinformation could have been dangerous. In this instance, the use of the misinformation might prove costly.

Charlie

NYCHASM

Obviously, it's NOT "perfectly fine either way." You go on to cite a "real danger" of "could potentially hit the sensor". What's the big deal of doing it the correct way and dropping the sensor into the tire before dismounting?

Sorry...I just don't get it.

Charlie

Dope

No, you obviously don't get it. The danger I cited is if you don't tell the guy dismounting the tires. If you unbolt the sensor and drop it into the tire, it can fall on the ground once you remove the tire. Then an elephant might walk by and crush it into tiny bits. Highly dangerous, I don't recommend doing it that way.

Like I said, perfectly fine doing it either way. If you happen to not have an 11mm deep socket, the world will not end when trying to remove the tire.

Dope

NYCHASM

You seem to be the one that really doesn't "get it". Immediately following the first sentence in your reply, you AGAIN CITE A DANGER. I'm sure all the guys that change tires for a living in Georgia hold down second jobs as brain surgeons and once cautioned will positively be as delicate! Your logic is really flawed when you talk about the sensor falling to the floor. If you are telling the brain surgeon that he should be careful when dismounting the tire because of the sensors, and you trust him to then be careful, why wouldn't he be just as careful to not drop the sensor on the floor?

Maybe the proliferation of wild elephants in your neighborhood has caused one to walk off with all the 11mm deep sockets that any professional tire changer worth his salt should have in his arsenal of tools.

Charlie


[Modified by NYCHASM, 11:49 AM 3/8/2004]

AC54ME

:iagree: I have had my tires removed from the rims at leat 6 times! There is no reason to 'drop' sensors into the tire - IMO this would possibly cause additional problems as they may be damaged during the removal process.

NYCHASM

Well...I guess them engineer and research and development guys over there at Hunter just don't have a clue.

So which appears to be the MORE inherent danger here AC54ME...dropping the sensors into the tire (and hoping a stray pachyderm doesn't wander by) OR hoping that the guy operating the machine heeds the warnings about "sensors inside" and "be careful" and "watch out with that crowbar"??

If the procedure about dropping the sensors into the tire prior to removing them is followed, any further warning about being careful because sensors are mounted at the valve stem is moot.

Charlie

Charlie

Geneus

:iagree: Don't argue with Charlie. He knows what he is talking about. Otherwise, he'll sick Heisenberg on you! Right, Charlie? :lol: :lol: :lol:

NYCHASM

Ja! Das ist korrect! When uncertainty strikes defer to Herr Heisenberg!

Charlie