tire pressure sensor
#2
Senior Member
True Car Nut
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Likes: 0
Received 1 Like
on
1 Post
With the GMs there are 2 different versions....one has a sensor in each rim that sees what the internal pressure is, and relays it wirelessly to a receiver. The other uses wheel speed sensors and works on the principle that based on a certain tire diameter, the tire will make one rotation in X amount of time. Now, if the tire has low pressure, it effectively makes the tire diameter smaller, meaning time to make one rotation is shortened. If the computer senses one tire rotating faster than the others, and has nothing to do with traction control or ABS, it will sound a low pressure warning chime.
#3
Senior Member
True Car Nut
Join Date: Oct 2002
Location: Groton, CT _NEBF 05, 06, 07_
Posts: 2,703
Likes: 0
Received 0 Likes
on
0 Posts
Re: tire pressure sensor
Originally Posted by ggyingling
and what NORMAL PRESSURE is?
#5
Senior Member
True Car Nut
Join Date: Oct 2002
Location: Groton, CT _NEBF 05, 06, 07_
Posts: 2,703
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ggyingling
What I meant by normal is...what does the sensor think normal tire pressure should be
#6
Senior Member
True Car Nut
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Likes: 0
Received 0 Likes
on
0 Posts
This feature is almost handy to have, my alero uses the WSS to gauge proper operation. When I put my snow tires on in the winter, even if they are all even pressured, the light still comes on after a few miles because all the tires are a diferent size, thusly, I have to reset the gauge. Generally, I can feel the low tire before the car tells me, its just an add on
#7
Senior Member
Posts like a Camaro
Wasn't it mentioned before that the sensor doesn't actually tell you if they are low, it just alerts you if one or more are significantly lower than the others? I know mine have fluctuated a little bit, but I only had the DIC alert come on once, and that was after I had put air in the tires.
#8
Senior Member
Certified Car Nut
Join Date: Oct 2003
Posts: 19,756
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Grimm
Wasn't it mentioned before that the sensor doesn't actually tell you if they are low, it just alerts you if one or more are significantly lower than the others? I know mine have fluctuated a little bit, but I only had the DIC alert come on once, and that was after I had put air in the tires.
#9
Senior Member
True Car Nut
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Likes: 0
Received 1 Like
on
1 Post
That depends on the system that is employed. I do know that GM used/uses 2 different styles, and one of them uses sensors inside the rim. Now, I do NOT know if they measure ACTUAL pressure or just senses a difference of pressure among all four wheels, but I would think the *simpler* WSS version would work in the later application.