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Old 04-12-2015, 09:03 AM   #1
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Tire Pressure sensors

I'm new to this so maybe someone can help me out. I check my tire pressure via the Mustang guage, and the tires are reading 40lbs each!

I look at the recommended tire pressure, and set them to 32 via my digital tire pressure gauge.

Now I look at the Mustang guage and it has 33 at one tire and 34 at the rest!

Is that normal to be that far off?
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Old 04-12-2015, 11:19 AM   #2
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Yes, they are small and cheap and probably so is your digital gauge.
Or,.... You used metric air by mistake.
Switch to Canadian, it's cleaner and cooler.
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Old 04-12-2015, 12:19 PM   #3
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Thanks

Quote:
Originally Posted by Waylap1 View Post
Yes, they are small and cheap and probably so is your digital gauge.
Or,.... You used metric air by mistake.
Switch to Canadian, it's cleaner and cooler.
Ha ha I checked my "cheap" digital gauge with my professional analog gauge. Both gave me the same readings.

My gauge is pounds only.

I need to try your Canadian air suggestion!
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Old 04-12-2015, 04:43 PM   #4
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Make sure the you've rolled the tires before you check them. From what I gather the sensor only register when they sense motion in the tires to conserve battery life. If the car has been sitting, they'll show the last recorded pressure.


I'm not 100% positive on that, so don't quote me but if it's what I think it is, just go up and down the driveway and it should give you the correct reading on the dash.
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Old 04-12-2015, 04:51 PM   #5
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Thanks. I noticed today the pressure readings from the Mustang are still 2 pounds off. Not a big deal I guess. The car is still new less than 500 miles. I need to calm down.
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Old 04-12-2015, 04:58 PM   #6
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Mine show 2 psi lower than my gauge does. I have the front at 34 and the back and 33. In the car it shows as 32 and 31.
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