Something Of Interest To Some - Chevelle Tech
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post #1 of 13 (permalink) Old May 1st, 19, 4:41 PM Thread Starter
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Something Of Interest To Some

Checking tire pressure on my granddaughter's Kia and the metal caps were very tight so I had to use the pliers to get them off.
One was too tight and twisted off the top of the pressure sensor.

Dissimilar metals corroded

The guy at the tire store said it happens almost every day.

Anyway, just FYI, the metal caps need to be replaced with plastic caps to avoid a costly replacement of the sensors

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Last edited by Dean; Jun 13th, 19 at 11:27 PM.
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post #2 of 13 (permalink) Old May 1st, 19, 4:48 PM
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Re: Something Of Interest To Some

That's crazy. When we bought a new Honda Accord last year and it had plastic caps. Two of the four were broke sitting on the dealer's lot. The top of the cap was just popped off. The salesman stole some from another car. Since then, I have had to replace two more. When did valve stem caps become such a problem?! Maybe just stick with the metal caps and a bit of anti-seize.
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post #3 of 13 (permalink) Old May 1st, 19, 6:05 PM Thread Starter
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Re: Something Of Interest To Some

Anti-seize would probably work but plastic caps is much simpler, they won't corrode.
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post #4 of 13 (permalink) Old May 1st, 19, 6:08 PM
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Re: Something Of Interest To Some

Dean, how much did the pressure sensor set you back? It ridiculous that the mfg doesn’t understand dissimilar metal corrosion…
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post #5 of 13 (permalink) Old May 1st, 19, 7:11 PM
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Re: Something Of Interest To Some

When I worked for Hyundai and Kia I tossed those caps in the garbage. Makes for some unhappy customers.
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post #6 of 13 (permalink) Old May 1st, 19, 8:16 PM Thread Starter
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Re: Something Of Interest To Some

Quote:
Originally Posted by SSJohn View Post
Dean, how much did the pressure sensor set you back? It ridiculous that the mfg doesn’t understand dissimilar metal corrosion…
I just put a regular old school rubber stem in.
She's going to have the Kia dealer do it when she takes it back for the check up and oil change of the new motor they just put in.

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post #7 of 13 (permalink) Old May 1st, 19, 10:20 PM
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Re: Something Of Interest To Some

Quote:
Originally Posted by Dean View Post
I just put a regular old school rubber stem in.
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I believe that's "vehicular tampering"... you're quite lucky the black suit/sunglasses are up to their ears in political probing or they'd be dropping their helo on your front lawn.
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post #8 of 13 (permalink) Old May 2nd, 19, 2:51 PM Thread Starter
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Re: Something Of Interest To Some

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Originally Posted by cheveslakr View Post
I believe that's "vehicular tampering"... you're quite lucky the black suit/sunglasses are up to their ears in political probing or they'd be dropping their helo on your front lawn.
Since I can't do those wheels on my old tire machine, Walmart did it.

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post #9 of 13 (permalink) Old May 2nd, 19, 4:37 PM
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Re: Something Of Interest To Some

How about this tire sensor story: I drive a 6.2 -2010-1/2 ton Silverado. My tires are worn out, So I buy four NEW take/off tire & Wheels from a 2016 Silverado.
The tire shop bolts the new tires & Wheels to my truck, Pay the bill, Then head home. Holy Poop, My trucks dash is lighting up like a pin ball machine.
Keep going and the truck is having a freeken FIT !
A phone call to the Dealer K. Ross Chevrolet, Pointed me it the right direction. This was a free fix at the dealer. PROBLEM WAS.
The FOUR new 2016 tires & Wheels were sending ( sensor signals ) to the dash,, AND the FOUR 2010 Tires & Wheels ( that are in the bed of the truck) were also sending ( sensor signals ) to the dash.
The poor old computer could not figger out,,, What the hell is going on??? Why it was getting EIGHT signals. Everything on the dash was blinking ... So the computer took a HISSY FIT !.........
Its funny now, But not funny while driving.
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post #10 of 13 (permalink) Old May 2nd, 19, 5:23 PM
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Re: Something Of Interest To Some

It must be a location thing. I've had the same metal caps on my 370Z for 10 years in southern Arizona, without a problem. The first time I had tires changed, they "rebuilt" the TMPS sensors and replaces the steel caps with plastic grey ones. I had them put the steel ones back on.

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post #11 of 13 (permalink) Old May 2nd, 19, 11:43 PM Thread Starter
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Re: Something Of Interest To Some

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Originally Posted by Gene McGill View Post
It must be a location thing. I've had the same metal caps on my 370Z for 10 years in southern Arizona, without a problem. The first time I had tires changed, they "rebuilt" the TMPS sensors and replaces the steel caps with plastic grey ones. I had them put the steel ones back on.
Maybe not much salt gets put on your roads.
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The Kia dealer put a new sensor in today, it came with a plastic cap.
$70.00 for labor and $60.?? for the sensor.
Seems like a lot of labor to pull a wheel, break it down and put it back on.

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post #12 of 13 (permalink) Old May 6th, 19, 1:28 PM
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Re: Something Of Interest To Some

Another thing to remember with those is the core. They are aluminum everything to help with balancing. You need an aluminum core in an aluminum valve body. And yes, ALWAYS keep them capped, especially in the salt areas.

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post #13 of 13 (permalink) Old May 7th, 19, 8:54 AM
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Re: Something Of Interest To Some

I've had valve cores stick in the TPMS sensors before. I just drill a hole in the tire and hope the tires catches the bead with no a lot of air pressure.

Couple of junkers and a few clunkers.
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