I have a 2001 SuperCrew. I had to do a panic stop last night, and my rear tires screeched/skidded. I thought that 1. I had 4 wheel ABS and 2. that with ABS, your tires won't slid on dry clean pavement (no sand on the road, and no load in the bed).

When ABS kicks in, do you get feedback thru the pedal?
Is there a way to tell if the ABS failed/malfunctioned? I didn't look at the dash to see if the light was flashing of anything.

Thanks,
Bruce.

 

bwingate.....

Not sure I can give you much info on this.. but saw no one else was answering either.

My experience is that with ABS the wheels will NEVER skid... even if you try to make them. You can feel the ABS system engaging/disengaging through the brake pedal, and even hear the system working as well.

I suggest you might want to get your dealer to check out your ABS.

Good luck!

 

There is nothing wrong with it if only one wheel skidded in the rear. The 4wheel abs is actually 3 channel, and there is only one rear speed sensor in the center and one output on the HCU for both rear brake calipers. Therefore, if one wheel locks up and skids, but the other one is rolling due to the differential, then the rear is not actually in a "lock up". This is ok because the reason for the abs is to keep wheels rolling for directional control and since one is still rolling, you have directional control.

 

jefflaws thanks for thar info. It does bring up another question. Are some, most, all other 4 wheel ABS systems this way or are we just getting short changed or mislead. Thanks.

 

Most all truck 4 wheel abs that i know of are like this. It has to do with the rear axle and differential, meaning that if you put a sensor on the diff. in the middle, and either wheel turns a little, then the sensor sees that its not locked up.

A front wheel drive would require sensors on all 4 wheels, as the rear doesnt have anything common connecting them.

 

Thanks guys --

The truck is due for its 10k service, so I'll have them check it out. I think I might try to find a big empty parking lot this weekend and do a "controlled" test to see what happens.

Bruce.