TPMS question.
mine are all over the board 2014 jkur. I have an accurate two accurate gauges that read the same to the 1/2 pound but my evic is 2 or 3 psi different at any given time. My mpg is the same it is never the same as when I hand calculate it. I chalk it up to being a Chrysler. My speedo and odometer are spot on tho so at least I know some things are calibrated correctly.

Phil
Last edited by psouza; Oct 3, 2014 at 07:01 AM.
The more digital they go the more it seems to cause issues, it appears . Is your brake light digital ?
I wish they would just make a new jeep with old school technology that lasted. We know how to check air pressure
like you said you even checked it your way to second guess the digital reading . So why do they complicate the matters just more lights to blow out and throw errors!
I wish they would just make a new jeep with old school technology that lasted. We know how to check air pressure
like you said you even checked it your way to second guess the digital reading . So why do they complicate the matters just more lights to blow out and throw errors!
Phil
Last edited by psouza; Oct 3, 2014 at 07:21 AM.
We are blessed with "digital" because it is cheap and easily reproducible. The customer base demands the things it can do and the government mandates things only digital technology can accomplish. The concept is not flawed, but the execution by the manufacturers certainly is. Done right, it is amazing. Done the way Fiat / Chrysler does it.....
The "old days" are truly gone forever.
Phil
Phil
When I checked mine against a calibrated pressure gauge, all 5 were within a pound of the gauge. I don't look for accuracy in the TPMS sensors. The system's function is to warn of low tire pressure before it becomes a problem. It can do that well while being off a couple of pounds. Tire pressure should be checked with a gauge periodically, even with the display on the instrument panel.
Federal guidelines state the light must come on when 25lbs below placard psi.
Here are a few TPMS figures for the JK:
[TABLE="class: MsoNormalTable"]
[TR]
[TD] Placard Pressure (Cold) (PSI)
[/TD]
[TD="width: 278"] Low Pressure ON Threshold (PSI)
[/TD]
[TD="width: 287"] Low Pressure OFF Threshold (PSI)
[/TD]
[/TR]
[TR]
[TD="width: 261"] 28
[/TD]
[TD="width: 278"] 22
[/TD]
[TD="width: 287"] 26
[/TD]
[/TR]
[TR]
[TD="width: 261"] 29
[/TD]
[TD="width: 278"] 23
[/TD]
[TD="width: 287"] 27
[/TD]
[/TR]
[TR]
[TD="width: 261"] 30
[/TD]
[TD="width: 278"] 24
[/TD]
[TD="width: 287"] 28
[/TD]
[/TR]
[TR]
[TD="width: 261"] 31
[/TD]
[TD="width: 278"] 25
[/TD]
[TD="width: 287"] 29
[/TD]
[/TR]
[TR]
[TD="width: 261"] 32
[/TD]
[TD="width: 278"] 25
[/TD]
[TD="width: 287"] 29
[/TD]
[/TR]
[TR]
[TD="width: 261"] 33
[/TD]
[TD="width: 278"] 26
[/TD]
[TD="width: 287"] 30
[/TD]
[/TR]
[TR]
[TD="width: 261"] 34
[/TD]
[TD="width: 278"] 27
[/TD]
[TD="width: 287"] 31
[/TD]
[/TR]
[TR]
[TD="width: 261"] 35
[/TD]
[TD="width: 278"] 28
[/TD]
[TD="width: 287"] 32
[/TD]
[/TR]
[TR]
[TD="width: 261"] 36
[/TD]
[TD="width: 278"] 29
[/TD]
[TD="width: 287"] 33
[/TD]
[/TR]
[TR]
[TD="width: 261"] 37
[/TD]
[TD="width: 278"] 29
[/TD]
[TD="width: 287"] 34
[/TD]
[/TR]
[/TABLE]

Phil
if I can live with out it , and it still drives ok . I don't mind normal wear and tear items but all the modern stuff really bugs me even the fact I cant get to my six spark plugs easy gets me mad on my 2012 drivers side forget it . you need to dis- assemble the jeep or even then you need special tools not to destroy the plug way down in the tube . (wheres the advantage?) id rather replace them every 50,000 with a socket wrench and checking my tire pressure wasn't a chore either (have we really gained much from all the modern junk)
military spec ok but were not getting that at all it all started with emission control
give me points and condenser & dstributer cap
military spec ok but were not getting that at all it all started with emission control
give me points and condenser & dstributer cap
Last edited by jeepmojo; Oct 4, 2014 at 05:29 AM.




