When properly setting your tires so as to keep the light off, remember
this: Each 10 degrees F of temperature change means about 1 psi pressure
change. The tires MUST be at ambient temperature when you do the final
pressure-setting. This means that you can no longer fill up your tires at
the gas station and count on the light staying off the next morning. And
especially you can't use the gas station's built-in gauge as a guide to
So, to keep the light off, and assuming you have no means at home for
filling your tires...
OVERfill your tires at a gas station. If your door-jamb sticker calls for
26, put in 32 or 34.
Drive home. Leave the car to sit overnight. In the morning, before you
drive the car, and before the sun hits the tires, check the pressures with
a decent gauge. Lower them to 26 (or whatever the door sticker says).
**Take note of the ambient temperature during the time you performed this
Why should you take notem of the ambient? Because...
If ambient was 40, and it drops to 20, you /lose/ 2 psi. If it was
originally 40 and it climbs to 60, you /gain/ 2 psi. If you set the
pressures at the height of summer at 90 after a highway run, and you never
touch them again, by the time winter comes and the temperature has dropped
to 40, you've lost more than 5 psi (perhaps as much as 10 psi), and the
light may come on. This means you need to check and adjust at least once
each season, adding or bleeding as needed.
"Doug" wrote in message
Anyone have success fixing this problematic sensor without going to
the dealer? I read on some forum last nite how some had to go to the
dealer multiple times to fix, change rims, etc... to eliminate the
warning on the dash. Lately our weather is colder so I realize that
may have triggered my warning on the dash but tires look okay. I
don't know what the original pressure was nor what it is now. I may
just ignor the warning on the dash since I'm confident about the tires
but if I could do some quick fix, I'd be willing to give it a try.
Best to invest in a decent tire gauge and one of those electric tire pumps.
Check your pressure (typically around 30-32) monthly.
See my previous post which might explain why it caught me by surprise.
No argument... I'll put a gage on it first and then put air in one or
more tires. I've got a compressor so I admit I have no excuse for low
Sometimes I go by touch rather than by sight. If I touch my tires
often when properly inflated, I get a sense by touch when they aren't
as hard. I don't claim to be perfect but I feel confident about this.
I'm afraid that method is nowhere near accurate enough for any useful
purpose, not even on vehicles which lack TPMS.
There is no possible way even the most sensitive hand is going to be
reliably able to tell the difference between 30 psi and 25 psi, or between
25 and 20. Use of a tire gauge is the ONLY correct way to set pressures.
I don't claim to be as good as a gage of course but I think my hand is
decent. Normally what I've done over many years is first gage the
tire to proper specs and after several times doing this and feeling it
with my hand (and eyes) I then use my hand/eyes for in between gage
checks. It works for me for shorter trips / time. Of course if I
were going on a long trip, I'd use a gage.
while i agree that a gauge is the way to go, there is a method of
checking tire pressure that is a good deal more accurate than what
tegger seems to be scared about and which is useful "in the field".
if you flick your finger against the tire wall, you'll hear a ringing
tone. admittedly, you're going to have a hard time if you're alongside
a busy freeway, but it's there nevertheless. and its tone depends on
air pressure, much like a guitar string tone depends on tension [the
concept shouldn't be too hard to grasp since the tire wall has tensioned
strings in it]. you can thus quickly learn the tone for your tires when
properly inflated, and can use it to inflate to within a couple of
pounds of target if you don't have a reliable gauge handy.
Interesting Jim. Never heard or thought of that but why not. Makes
sense to me. I think we all agree a gage is always best but one
could survive on the road without one ... at least for a while. I'll
have to try your method tho I admit my ears aren't as good as they
once were :-( Thanks Jim.
You could survive just fine without a gauge for probably /all/ the time,
but the tire-pressure light is not likely to stay off for you.
There's a difference between "safe" or "acceptable" tire inflation, and
inflation that will make the TPMS computer happy.
that snippage makes no sense out of context. but because you're so
childish about any poster that doesn't play the way you want them to,
you're prepared to discard context for avoidance. ridiculous.
of course, if you'd not been playing childish snippage games, you'd have
to address the fact that using the method i described, it's possible to
manage without a gauge, AND not have pressure warning lights.
[sticks fingers in ears] "la la la la i can't hear you!"
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