abs speed sensor issue - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 11-14-2011, 01:35 PM Thread Starter
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abs speed sensor issue

my 2005 ford f350 diesel recently the speedometer started acting up , i would be driving and the gauge would cut out and all of the sudden jump back up, i hooked up my programmer to read the trouble code in which it showed speed sensor error. so i bought the part at ford installed it my self and the speedometer is still not working along with the abs light being on too. im not sure what else to do with it. any suggestions
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post #2 of 3 Old 07-18-2013, 04:54 PM
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Smile Speedometer not working

I'm having the same problem with my 2000 F350. Yesterday the speedometer quit and at the same time the ABS light came on and on the shift lever (auto) the light that comes on if you shut off the overdrive is blinking. I can't get it in any shop for a week and of course company is coming tomorrow and family reunion about 100 miles away. And of course the cruise control doesn't work.
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post #3 of 3 Old 07-18-2013, 07:30 PM
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You should have started a new thread. Plan on not taking your truck to the reunion unless you can fix the issue before hand. There are several systems that rely on the speed signal, your automatic transmission is one so don't drive it except to see if the issue is fixed.

The system is fairly simple, there is a tone ring attached to the carrier in the rear differential. The VSS counts the teeth and sends a square wave signal to the cluster. The cluster then passes the signal to the ABS and PCM which controls your transmission. You have no speedometer so the issue is somewhere between the cluster and the differential. If your other gauges are working, it's not as likely to be the cluster. I would start by replacing the VSS, it should be less than $30 then check all the wires back to the cluster.

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