Speedometer
Sep 30, 2005 | 11:45 AM
Thread Starter
Burning Brakes
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Speedometer
Does the PCM use the front wheel sensors in its speed calculation
for the speedometer ?
Thanks >>>>> INTHERED
Sep 30, 2005 | 11:50 AM
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
no. The vehicle speed comes from a sensor in the rear carrier.
Though there are sensors at all wheels for the traction control and active handling systems.
Sep 30, 2005 | 12:49 PM
Racer
Joined: Jul 2004
Posts: 405
Likes: 0
From: Colorado Springs CO.
Quote:
Originally Posted by Mike Mercury
no. The vehicle speed comes from a sensor in the rear carrier.
Though there are sensors at all wheels for the traction control and active handling systems.
I got the following from Hib Halverson. Is this what you mean by "in the rear carrier?
Vehicle Speed Sensor (VSS)---the device that senses vehicle speed. It screws
into the transmission where speedometer gears were in the old days.
Sep 30, 2005 | 01:31 PM
Drifting
Joined: Jul 2001
Posts: 1,527
Likes: 0
From: Tucson AZ
St. Jude Donor '11,'13
As usal Hib is right on target.
Sep 30, 2005 | 04:49 PM
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
Quote:
Originally Posted by C5-BRUCE
I got the following from Hib Halverson. Is this what you mean by "in the rear carrier?
Vehicle Speed Sensor (VSS)---the device that senses vehicle speed. It screws
into the transmission where speedometer gears were in the old days.
no. Hib is incorrect here (hey; he's only human like the rest of us
)
the VSS sensor for the
C5 is located in the rear differential (which is actually called the "carrier" on the C5).
It is not located in the transmission on the C5.
Sep 30, 2005 | 06:54 PM
Team Owner
Joined: Jul 2004
Posts: 24,652
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From: NJ
St. Jude Donor '05-'08
Isn't that the reason you don't need to adjust the speedo when you get new gears?
Sep 30, 2005 | 07:03 PM
Melting Slicks
Joined: Jun 2001
Posts: 3,123
Likes: 3
From: Orland Park Illinois
St. Jude Donor '06-'07
Quote:
Originally Posted by Mike Mercury
no. Hib is incorrect here (hey; he's only human like the rest of us
)
the VSS sensor for the
C5 is located in the rear differential (which is actually called the "carrier" on the C5).
It is not located in the transmission on the C5.
w/ MM 100%
Sep 30, 2005 | 08:28 PM
Safety Car
Joined: Oct 2002
Posts: 4,434
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From: Austin TX
Cruise-In IV Veteran
Cruise-In V Veteran
Cruise-In VI Veteran
St. Jude Donor '03-'04-'05
Quote:
Originally Posted by Wicked Weasel
Isn't that the reason you don't need to adjust the speedo when you get new gears?
Correct. The speedo will be correct when you change diff gears. And if you have an automatic tranny, you will need to have your computer reprogrammed for new shift points if you put in a different ratio of differential gear.
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