rear antilock (LIGHT)

[firstford]

does anyone know what else besides (RABS) that would keep the rear antilock light coming on i've replaced the sensor twice. HELP??? 1990 bronco fullsize 5.8

 

[BroncoJoe19]

does anyone know what else besides (RABS) that would keep the rear antilock light coming on i've replaced the sensor twice. HELP??? 1990 bronco fullsize 5.8

If your emergency brake cable did not fully release that could be one cause.

I am sure there are others.

The typical cause is the VSS Vehicle Speed Sensor Otherwise known as the RABS for the earlier models I think pre '93 located on the top of the rear differential.

 

[firstford]

If your emergency brake cable did not fully release that could be one cause.I am sure there are others.

The typical cause is the VSS Vehicle Speed Sensor Otherwise known as the RABS for the earlier models I think pre '93 located on the top of the rear differential.

The (RABS) that's the sensor i replaced twice on top of rear differential.But the part store shows the (VSS) sensor is totaly different and it's located in the tranny so are the on the same warning rear antilock light.

 

[BroncoJoe19]

The (RABS) that's the sensor i replaced twice on top of rear differential.But the part store shows the (VSS) sensor is totaly different and it's located in the tranny so are the on the same warning rear antilock light.

Yep, I had some of my stuff ars backwards.

I also have a '90 bronco. Our speedometer is cable driven. It is attached to the transfer case. There is a VSS there. I believe it is used for cruise control and for feeding information to the computer so that it can regulate the E4OD transmission. We also have a separate RABS sensor in the rear diff.

From what I have read, the problem is often the RABS in the rear. I know.. you relaced that sensor twice. This is just informational.

The newer trucks, I *think* '93-'96 don't use the VSS at the transfer case anymore, rather the RABS (in the rear) serves a dual function, that of RABS, and VSS. Aparrantly some refer to the the sensor in the rear as the RABS, and others refer to it as the VSS, which leads to confusion.

I have seen that there are ways to pull codes (for the anitlock breaking system) for the 93-96 broncos, but I have not found how to do so for a '90 bronco.

Hopefully someone with a lot more knowledge than me will be more helpful.

joe

 

[BroncoJoe19]

Yep, I had some of my stuff ars backwards.I also have a '90 bronco. Our speedometer is cable driven. It is attached to the transfer case. There is a VSS there. I believe it is used for cruise control and for feeding information to the computer so that it can regulate the E4OD transmission. We also have a separate RABS sensor in the rear diff.

From what I have read, the problem is often the RABS in the rear. I know.. you relaced that sensor twice. This is just informational.

The newer trucks, I *think* '93-'96 don't use the VSS at the transfer case anymore, rather the RABS (in the rear) serves a dual function, that of RABS, and VSS. Aparrantly some refer to the the sensor in the rear as the RABS, and others refer to it as the VSS, which leads to confusion.

I have seen that there are ways to pull codes (for the anitlock breaking system) for the 93-96 broncos, but I have not found how to do so for a '90 bronco.

Hopefully someone with a lot more knowledge than me will be more helpful.

joe

Continuing withthe saga...

Someone suggested in another thread that Low fluid level in the master cylinder could cause the light to come on. I think that I read elsewhere that if it was a hydrolic problem that the RED brake light would come on. I am not sure and it is easy enough to check, so what the heck.

This thread...

http://broncozone.com/forums/index.php?s=&...post&p=8552

mentions that the windows, wipers, and radio are all on the same electrical circuit with it, and that they are on a circuit breaker rather than just a fuse.

Now... this gentleman's issue was in his steering column (a loose connection to his ignition switch)

I noted last week that my driver's window didn't function, but a few minutes later it did, and with that my radio went off, but came back on. I figured that was strange and just another something to check out.

Monday driving home with all the windows open on the interstate, my driver's window only went part way up, and I thought that I smelled something electrical, but I wasn't quite sure. I had taken the door panels off last week to take a look at the electric locks that are broken. I figure that when the parts come in I'll open it up again to see what I can see. Well, when I pulled into my driveway, I noticed that my "Rear Antilock" light was on!

I thought... oh $hit... now how do I test that!?!

SO I went inside had some dinner did some reading, went out and pulled the E brake release, started her up and the light was off.

I think that I will ultimately find the problem in my driver's door window switch, or somewhere in that circuit.

please let me know how you make out and what YOUR solution is

 

[firstford]

Thanks broncojoe 19 the forum you showed helped it was the fuse. Wires were loose when my radio got stole it must have got blown then thanks again.