[hoelscherlj]

Hello,
I knew it wouldn't be long until I was back. I'm having isssues with the ABS system now. I've noticed recently that sometimes when I'm coming to a stop at the last few feet of travel my ABS system kicks in. It doesn't happen all the time but enough to be annoying. On two occasions I've heard the ABS system kicking in while driving as well. I had a leaking break switch so the other day I took it in for the recall work. On the way there the ABS light came on and had me concerned. The dealership performed the recall work and when I got back in the van the light was off. I asked about the light but they were closing and the tech was gone and nothing was noted about the light in his paperwork. Oh well, I should have asked prior to the service.

The real kicker is all of this started after I installed speed bleeders on the front calipers and bled the entire system.

I've ohmed out all of the wheel sensors and they checked out OK and the two front sensors are clear of debris but I have yet to pull the drums to look at the rear sensors.

Any help or insight would be helpful,
Thanks

 

[D.Acker]

I was having the same problem, turned out to be the LR sensor.

 

[phantom]

What is the condition of the tires ?

 

[mark v]

Speed bleeders, on a Windstar?

Rear sensors may OHM OK but the real kicker is the amout of rust/decay they get on them. Sure they OHM fine but they are so wore out at the ends they cant pick up the tone rings.

Also how did you bleed the system?

 

[Slartibartfast]

the rust in the rear brakes also makes the sensor move away from the tone ring. You can adjust the sensor gap by bending the sensor mounting tab slightly. If the gap is too large, the signal will be weak. If one side has a larger gap than the other, then you'll get what appears to the ECU to be different wheel speeds on decel. There is a spec for the gap, just can't remember what it is. The sensor should be fairly close to the tone ring, if you see an 1/8" gap, you've got a problem.

 

[D.Acker]

hoelscherlj - where you are located? Just curious.

Oh and exactly what Mark said, was my problem. All the sensors ohm'd out but that LR was so worn it couldn't pick up the tone ring.

 

[Boghog]

How did you bleed the ABS? Your HCU may have air in it.

 

[mark v]

Rust.... Tabs....???

No the sensor actually rusts off. The rust does not move the sensor.

the rust in the rear brakes also makes the sensor move away from the tone ring. You can adjust the sensor gap by bending the sensor mounting tab slightly. If the gap is too large, the signal will be weak. If one side has a larger gap than the other, then you'll get what appears to the ECU to be different wheel speeds on decel. There is a spec for the gap, just can't remember what it is. The sensor should be fairly close to the tone ring, if you see an 1/8" gap, you've got a problem.