Speed sensor?

[ravingmadman]

Ok. When I hit a bump, or take a hard corner, the speedometer goes to zero, the tranny shifts, and the ABS kicks in. This is moderately terrifying. I'm going to disco the ABS before I drive it again, because I should've a long time ago anyways with my uber tires. But that won't fix it.

I think it's the speed sensor. Where does this go from the tranny, and where should I bug shoot the little bastard? Any other ideas?

Thanks.

 

[ravingmadman]

Wow. No love, huh?

 

[cmcarr85]

Ok well I have this problem and still have not found a fix. Mine does the same thing when I use my cruise after awhile... I replaced my speed sensor and have not used cruise and so far have had no problems as of yet......

Let me know if you find the problem..

 

[ravingmadman]

I pulled the ABS fuse under the hood this morning before leaving, and had no issues for the entire commute. I am not sure if my truck is just behaving because I'm willing to rip it's teeth out or not, and I don't know why that would have solved it, but so far that's where I'm at... And I have the same problem with the cruise control cutting out when the speedometer hiccups. Pretty lame. I'll keep you posted.

 

[cmcarr85]

Yea please do because maybe it is my abs and not my cruise control..

 

[ravingmadman]

Ok, So after pulling the ABS fuse (32V 60A Blue one under the hood), I haven't had any problems with the ABS, the speedometer "tick," or the cruise control cutting out. I'm going to reinstall the fuse tonight for the commute home, and see if the symptoms come back. If they do, I'll know where to look.

FWIW, after pulling the ABS fuse, it feels like it is shifting smoother in the 40-50MPH range, right in the transition from 4th to 5th. It used to shudder a little if I weren't on the gas, and now it won't do it. I'll be checking for that too with the reinstallation of the fuse.

 

[ravingmadman]

Ok, I put the fuse back several days ago, or whenever I last posted on this thread, and haven't had a repro since. It is also 30 degrees warmer, and very wet. We should have some cooler temps soon, and I'll be able to get a good repro environment. So either it was the fuse itself (HIGHLY unlikely), or things just loosen up when it is cold (much more likely). I'll keep bumping this thread as I learn more.

 

[bowtiefreak]

I also had a similar issue. ABS wold kick on around 5 mph or so I yanked the fuse for the whoole year until recently, no problems since. Does the ABS reset? I think I have a bad speed sensor just not sure which one. In all honesty I don't care. Once it warms up...my fuse comes back out