Anyone Experienced This.....
Thread Starter
Instructor
Joined: Apr 2001
Posts: 194
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From: Uledi, PA
Anyone Experienced This.....
I've searched for posts on the Service LTPWS idiot light and they all seem to say the light comes on once you start driving the car.
Mine is the complete opposite. The light comes on when I start the car and after I drive for about 100 - 150 feet it goes out and doesn't come on again until I turn the car off and start it up again. Has anyone seen this before, know if it's an actual problem, or how to fix it?
It began last spring after I brought my Vette out of storage for the winter. Prior to that, the problem wasn't there. My battery did die once last winter but I'm not sure if that could be the cause or not.
Clue me in guys!!!
Mine is the complete opposite. The light comes on when I start the car and after I drive for about 100 - 150 feet it goes out and doesn't come on again until I turn the car off and start it up again. Has anyone seen this before, know if it's an actual problem, or how to fix it?
It began last spring after I brought my Vette out of storage for the winter. Prior to that, the problem wasn't there. My battery did die once last winter but I'm not sure if that could be the cause or not.
Clue me in guys!!!
Race Director
Joined: May 2000
Posts: 17,101
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From: No more yankee my wankee, the Donger is tired!
Re: Anyone Experienced This..... (ski_dwn_it)
What is ltpws? maybe I am brain dead today///// :confused: :confused:
Tire
Pressure
Warning
System
Just scrap it. It's the biggest pain in the butt feature in the C4, except for maybe the opticrap
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From: Compound in the Grove, Ga.
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St. Jude Donor '16
Re: Anyone Experienced This..... (LuvMyVette)
It should come on at startup and go thru a self-check and go out. Check to see if there are any codes stored in it. You can also lower 1 of the tires to under 25psi and you should get a low tire warning as soon as you start moving.
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From: Manassas VA
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St. Jude Donor '14
Re: Anyone Experienced This..... (LuvMyVette)
Mine does the same thing. I remember reading or someone told me that the pressure sensors are powered by an internal battery and when that battery dies a second source of power is used, Centrifugal force, or Centripetal force (??) Energy is somehow generated by sensor when the tire is rotating. It takes a few hundred feet before enough energy has been gernerated for the sensor to send out a signal which would cause the light to go off.
It made sense to me. Batteries don’t last forever and I wasn’t a Physics major in college.
:confused: :confused:
It made sense to me. Batteries don’t last forever and I wasn’t a Physics major in college.
:confused: :confused:
Race Director
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From: Compound in the Grove, Ga.
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St. Jude Donor '16
Re: Anyone Experienced This..... (Bluewasp)
You are right :yesnod: but no battery :nono: Energy is generated by sensor when the tire is rotating.
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Race Director
Joined: Oct 2002
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From: RI
Re: Anyone Experienced This..... (We Gone)
piezo electric effect to be exact. It uses a pendulum weighted sensor to create the electrical charge that is stored in a capacitor to power the decoding IC
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From: Compound in the Grove, Ga.
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St. Jude Donor '16
Re: Anyone Experienced This..... (kittmaster)
You would be amazed at all the on board diagnostics the Vette has. Get a GM service Manuel it will be well worth it. You can also get a set of fault code grounding plugs made by Gordon Killebrew, there is a link to his site on the zr1.net or you can also get the set from Mid America. You can also get the codes from the 90 to 93 LTPWS system by grounding the ALDL plug pin A to B codes 23 33 43 53 are for low tire, codes 24 34 44 54 are for sensor fault code 99 receiver/control module. Codes starting with 2-RR 3-LR 4-LF 5-RF.
Hope this helps Steve
I see you have a 95
94 to 96 has a more complex system and plug you will need to jump pins 5 to 6 the codes should be the same.
[Modified by We Gone, 6:17 PM 1/12/2004]
Hope this helps Steve
I see you have a 95
94 to 96 has a more complex system and plug you will need to jump pins 5 to 6 the codes should be the same.
[Modified by We Gone, 6:17 PM 1/12/2004]
