2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Tire Pressue Continually Dropping?

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Old Apr 3, 2008 | 02:48 PM
  #1  
ensign_lee's Avatar
ensign_lee
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From: TX
Default Tire Pressue Continually Dropping?

I keep getting alerts about low tire pressure, mainly because the rear driver's side tire keeps underinflating. I just filled it up to 32 psi this time last week and now it's at 26.

I'm new to all this automotive stuff. What could be wrong?

I'm thinking that my tire has a leak somehow? If so, how do I go about fixing it?

I'm thinking I probably caused it, but any way that this could have been a manufacturer's defect?

Thanks for the answers!
Old Apr 3, 2008 | 02:50 PM
  #2  
BigFloppy's Avatar
BigFloppy
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Joined: Nov 2005
Posts: 307
From: Marietta, GA
Default RE: Tire Pressue Continually Dropping?

DON'T USE FIX-A-FLAT or anything like that or you'll be buying yourself a new Tire-pressure sensor
Old Apr 3, 2008 | 02:58 PM
  #3  
Mr. L's Avatar
Mr. L
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Joined: Nov 2007
Posts: 142
From: Bay Area, CA
Default RE: Tire Pressue Continually Dropping?

You could have a 'nail' - just bring it to your local tire shop and I'm sure they'll diagnose whats wrong with the tire. If it is indeed a nail - it should cost no more than 15-20 bucks to get it patched.
Old Apr 3, 2008 | 02:59 PM
  #4  
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Derf00
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From: AZ
Default RE: Tire Pressue Continually Dropping?

ORIGINAL: ensign_lee

I keep getting alerts about low tire pressure, mainly because the rear driver's side tire keeps underinflating. I just filled it up to 32 psi this time last week and now it's at 26.

I'm new to all this automotive stuff. What could be wrong?

I'm thinking that my tire has a leak somehow? If so, how do I go about fixing it?

I'm thinking I probably caused it, but any way that this could have been a manufacturer's defect?

Thanks for the answers!
Have you checked the tire valve stem? If that's loose the tire would losePRESSURE very slowly. You could also take a bottle with soapy water and spray all the way around the tire where the rim and tire meet. Any bubbles means a leak. Alternatly you could take the tire off and rotate it in a tub of water. Air escaping would create air bubbles.
Old Apr 3, 2008 | 03:02 PM
  #5  
06VistaBlueGT's Avatar
06VistaBlueGT
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Default RE: Tire Pressue Continually Dropping?

ORIGINAL: Derf00

ORIGINAL: ensign_lee

I keep getting alerts about low tire pressure, mainly because the rear driver's side tire keeps underinflating. I just filled it up to 32 psi this time last week and now it's at 26.

I'm new to all this automotive stuff. What could be wrong?

I'm thinking that my tire has a leak somehow? If so, how do I go about fixing it?

I'm thinking I probably caused it, but any way that this could have been a manufacturer's defect?

Thanks for the answers!
Have you checked the tire valve stem? If that's loose the tire would lose weight very slowly. You could also take a bottle with soapy water and spray all the way around the tire where the rim and tire meet. Any bubbles means a leak. Alternatly you could take the tire off and rotate it in a tub of water. Air escaping would create air bubbles.
+1
Old Apr 3, 2008 | 03:05 PM
  #6  
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Nuke
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Joined: Jun 2007
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From: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
Default RE: Tire Pressue Continually Dropping?

If you have an '08, it's the OEM wheel/tireand it's leaking like that, just go back to the stealership. Unless you damaged the tire or wheel, they should fix it at no charge.

Look on the bright side, you know your TPMS is working...
Old Apr 3, 2008 | 03:12 PM
  #7  
Derf00's Avatar
Derf00
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Joined: Feb 2005
Posts: 13,187
From: AZ
Default RE: Tire Pressue Continually Dropping?

ORIGINAL: Nuke

If you have an '08, it's the OEM wheel/tireand it's leaking like that, just go back to the stealership. Unless you damaged the tire or wheel, they should fix it at no charge.

Look on the bright side, you know your TPMS is working...
Valve stem takes all of 30 seconds to check...vs an hour or longer + travel time to the dealership. If it's not the valvestem you can take it to the dealer since, if there is a leak anywhere else, it'll end up there anyways.
Old Apr 3, 2008 | 03:20 PM
  #8  
moosestang's Avatar
moosestang
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Joined: Sep 2006
Posts: 11,278
From: Gainesville, FL
Default RE: Tire Pressue Continually Dropping?

you have a nail in your tire. My wifes car got a nail after only 4 days on the road. Her
car has the sensors and I knew the tire had a nail after 5 seconds of checking all the tire pressures. I've gotten two nails in my tires.
Old Apr 3, 2008 | 04:46 PM
  #9  
157dB's Avatar
157dB
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Joined: May 2007
Posts: 13,322
From: NW Arkansas
Default RE: Tire Pressue Continually Dropping?

Its called a flat. They happen sometimes.
There are places you can take your tire
and they can patch it for you. You dont
need to buy a new tire if they try and sell
you one. Get out the ol soapy water and
spray some on your leaky tire and the
leak will appear as bubbles where the tire
is leaking air. No bubbles, no leak.
I would hop on the valve stem first if
no nails are readily visable upon inspection.
Old Apr 3, 2008 | 04:54 PM
  #10  
ensign_lee's Avatar
ensign_lee
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Posts: 820
From: TX
Default RE: Tire Pressue Continually Dropping?

K, n00b question: how do I check the valve stem?



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