Low Trac Light from 60-65mph after rear end swap...
08-03-2018, 06:18 PM
#121
i was never told that my 4 channel may or may not work, nor was i told tweaking would be involved.....i was told along the lines of "we have sold hundreds of these rears, and nobody has ever said there 4 channel has never worked. but most of these guys dont do any 3 or 4 channel mods because they are race cars".
again, what do i need to shave in order to move the sensor closer to the reluctor. trust me, i have read many things about what can cause this system not to work.....well aware of all the stuff u mentioned...its not any of those. i had gm use the tech 2 to monitor stuff. the only thing i have not done is check the distance because i just recently read that in this thread. hopefully i will accomplish this weekend
again, what do i need to shave in order to move the sensor closer to the reluctor. trust me, i have read many things about what can cause this system not to work.....well aware of all the stuff u mentioned...its not any of those. i had gm use the tech 2 to monitor stuff. the only thing i have not done is check the distance because i just recently read that in this thread. hopefully i will accomplish this weekend
08-03-2018, 06:22 PM
#122
funny you say that.....just happened to be doing a brake job on my 2002 taurus. just has abs. the one rear reluctor was super crooked, the magnet was literally caked with god knows what, reluctor a little rusty and i had to tap the ring a little less than 1/8" to straighten out....no abs issues before or after i straightened it. literally thought, "my friggin camaro has this that, new abs parts and still can't work.
08-10-2018, 01:38 PM
#123
Now for the housing being crooked. The housing could be a U and it would still not effect how the 4ch reads, it just needs the ring to spin and a sensor to read it. Not that this could happen for obvious reasons but you could mount the housing end ontop of the axle tube and it still just needs to read the reluctor wheel from the backing plate. As long as the backing plate is mounted to the housing end it should work. A wobbly ring can effect how it reads and this is where we get back to making sure it is 100% true when spinning. Another issue is you need to shave the sensor with aftermarket housing ends to fit and this step is often not done or not done well enough. This is do to the bigger housing ends to fit a bigger bearing. If you force it in the pick up portion will be at an angle and you need to make sure it is parallel with the ring.
08-13-2018, 08:33 AM
#125
Like stating previously check all these scenarios-
I hope that helps.
Different size tires, low tire pressure, spool, non spooled differential locking up like a spool, powder coated backing plates, ground down backing plates during cleaning, bad sensors, deteriorating wiring, pulling wiring out of the plug during disassembly, not pushing the plug in completely on reassembly, bent backing plates, not using the tin shield, and so many other things to consider that may cause unforeseen issues. The final step is to make sure the wheel spins true and adjust the gap on the sensor until the system reads properly.
08-13-2018, 03:55 PM
#127
Modify whatever is needed to be modify to tighten or expand the gap as needed until the ABS functions properly if that is indeed the issue as there is only the backing plate or the sensor itself to choose from.
08-14-2018, 06:09 AM
#128
edit: I also made sure the sensor pickup shaft ended up parallel to the notches in the ring and perpendicular to the reluctor's plane of rotation. I used a little bit of ultrablack over the sensor housing, paying special attention to areas that were filed...the sensor failing on the stands makes me think the issue with the stupid things is moisture ingress.
Last edited by therabidweasel; 08-14-2018 at 06:37 AM.
08-14-2018, 07:36 PM
#130
I'm sorry I wish I would of seen this before I left the shop. I would of got you all the proper measurements you needed. I might be swinging in their tomorrow because we have a ton of stuff going on I will look it up and get back to you, other wise i will call Eric and have him get the measurements you need.
