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-   -   Does the Speedo operate off the drive wheels? (http://www.peachparts.com/shopforum/showthread.php?t=6534)

jeneric21 03-01-2000 10:22 PM

I was wondering if the speedometer cable operates off the drive wheels. I was going to take my E430 to the Auto Club and check the speedometer. In order for the machine to test the car, it has to operate off the drive wheels. Thanks.

Eric

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'00 E430 w/ Solaris H-7's
Brabus 19'' Monoblock V, 2 piece
H&R Sport Springs

'99 SLK230 Sport

Deezel 03-01-2000 10:31 PM

Speedo's are typically driven by a gear and cable off the transmission, which I beleive in your case would qualify for the drive wheels. In other words, if you put the car on a dyno (or jack stands) and put it in gear, the car would not actually be moving, but would indicate true road speed. Your high tech new car might have an electronic pickup on the drive line instead of a cable. I have never seen a speedo driven by anything other than the drive train. Hope that helps.

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Deezel
87 300TDT
150,000 miles


jeneric21 03-01-2000 11:03 PM

Thanks Deezel, I'll bring it to the Auto Club and check it out.

Eric

Benzmac 03-02-2000 09:17 PM

Your car's speedo is driven by the ABS sensors if I am not mistaken.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM




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