Jump to content
  • Welcome To Mopar1973Man.Com

    We can see that your guest and been lurking about. When you register on the Mopar1973Man.Com site you'll be able to interact with all the other members. This is the most friendliest Cummins forum you'll ever join. Take the time right now and  REGISTER  on the Mopar1973Man.Com this will open up many more options and functions on the website. Everyone is very friendly and helpful just ask questions and everyone will help you out the best they can. 

Recommended Posts

I think I could use a new truck...


Seems like anytime I get in to drive my truck anymore, a gremlin has to come out of it.


Winter decided to rear its ugly head and the switch got flipped. Suddenly, I'm getting DUMPED on with snow. No way im driving the little passat. 


So I jump in the truck, drive it to work yesterday morning. Now I get a little show on my dash of my speedo dancing around and the ABS and brake like coming on. It'll come on, turn off. Back and forth.


I ordered a speed sensor for the transmission and rear diff. Which one could it be? Or is it something else?

Link to post
Share on other sites


Since the speedo messed up and the ABS light came on (if you have the 4 wheel abs) it will probably be the sensor in the differential, or the wires going to it.  (although someone on here lost the tone ring on the ring gear, but I doubt its that)



Link to post
Share on other sites

I replaced the rear diff sensor. Wondering if the computer needs reset by disconnecting the batteries? Seems like it has been coming on less and less now. Only seems to come on when I hit any bumps, but then turns back off. 


I've suddenly encountered a brake light switch problem now also. 😤


Killed my batteries because the brake lights were on for so long. I ordered a new switch and shimmed the pedal to keep the plunger down further using duct tape.


I read that the brake switch can cause the same problems? I guess we'll see.


The next thing to try is the transmission speed sensor or the ABS module. 

Link to post
Share on other sites

Might be a loose connection if bumps are making it come on. Would not hurt to plug it and unplug it few times, hit it electronics clean. The harnes connection might dirty or a little corroded. Speedo still out of whack?

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...