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Unread 05-20-2013, 05:45 PM   #1
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Join Date: May 2013
Location: Rancagua, Rancagua
Posts: 2
Wj Speedometer Problem

Hi Friends, I need your help!!

My Jeep (WJ - 2004)

I have a problem with the speedometer.
- start from 40 kph (24.8 mph).
- returns to 0 kph only when I remove the key contact.
- is a normal operation when accelerated, but as a starting point is 40 Kph.
- check both speed sensors in the transmission, disconnect both sensors, but the speedometer starting from 40 Kph !!
- perform the test board and runs correctly,ok.
- the ignition automatically give the marker is located in the 40 Kph

Please your help

Greetings from Chile

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Unread 05-20-2013, 05:53 PM   #2
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2002 WJ 
Join Date: Feb 2013
Location: halifax, ns
Posts: 813
I can't help you but I love your wine.
1993 FZR600RR
2002 Subaru WRX Sedan WRB (314k miles and counting)
2002 GC Overland (90k miles and fingers crossed)
"Bought, Not Built"
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Unread 05-20-2013, 06:01 PM   #3
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2001 WJ 
Join Date: Aug 2005
Location: Memphis, TN
Posts: 3,098
Speedometer operation does not use the transmission speed sensors. Instead, the ABS controller uses wheel speed sensor signals to generate a vehicle speed signal. Unfortunately, I have no useful information on why the speedometer does not start at zero like it should.
2001 WJ Limited with Quadra-Drive, Kenne Bell Supercharger, 3-inch Kolak exhaust, Stillen rotors (F/R) and MM pads, Addco sway bars (F/R).
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Unread 05-22-2013, 01:52 PM   #4
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Join Date: May 2013
Location: Rancagua, Rancagua
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Hi rm2001wj, Thanks!

I have an idea about this, a cable may be defective wheel, keep them informed

lazyWJ, of course chile wine is very good, especially in my town (Santa Cruz, Colchagua Valley)
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Unread 05-22-2013, 02:00 PM   #5
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2007 XK Commander 
Join Date: Aug 2012
Location: Auburn, Washington
Posts: 885
Has the cluster been recently taken apart? My first thought was someone took the needle off the speedo and replaced it with the ignition off. The needle should be pressed on at 0 km/h with the ignition in the "on" position.
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Unread 05-22-2013, 02:45 PM   #6
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2004 WJ 
Join Date: Mar 2013
Location: Broken Arrow, Oklahoma
Posts: 266
How often are you traveling below 25 mph that your speed must be known? It would bug me like crazy but you probably don't really need to fix it either.

Schlotsky I don't think that is it because at 10 mph actual speed his speedo would read ~35 mph if that were the case. It would be constantly off by the margin of ~25 mph. If I read his post correctly the needle is stationary up until ~25 mph and then accurate after that.

EDIT: Just read the OP again, Schlotsky may be right. English as a second language confused me.
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