low trac light randomly comes on?

[smug]

Last year I replaced both front wheel bearing with new Timkin units and I noticed that the left front wheel speed sensor harness has some corrosion inside the plug. I cleaned as much as I could out with a pick and put it together because that is all I had at the time and everything has been fine, this is the body side wire harness. I drove the car about two weeks ago to a cruise night and while turning and braking into parking lots at low speeds I could feel the ABS kick in for a second, then the ABS light came on. I then went back to that connection at the left from wheel bearing and soaked the plug in some battery terminal cleaner to get the corrosion out, it worked and the ABS light went out. Now at very low speeds with the wheel turned and moving very slowly such as pulling out of a parking spot or backing out of the garage and moving forward the low trac light with flash for a second and I can feel the ABS kick in. I am thinking the terminals inside of that plug are shot , or loose, and I just need so solider on a new pigtail on to the harness?

Click to read more...

 

[RICH17]

Dorman make new ABS harnesses and theyre not to price. They seem to be a common problem on 2nd gen W's and the minivans. You can get them at NAPA

 

[Turbocharged400sbc]

did you inspect the inboard plugs over near the control arm bushings?

 

[smug]

did you inspect the inboard plugs over near the control arm bushings?

My 01 does not have those plugs

 

[Turbocharged400sbc]

ahhhh i see your problem now....those are factory optional systems, just delete em and go on yer way

if the pins got corroded enough they may have weak contact points but it isnt that hard to pull the female pins and rebend the tang to grab it tighter...unfortunatly what you describe is more in line with a classic hall effect sensor being weak/dropping out and reading out that one wheel is stopped while still moving. the extra resistance from poor conection wasnt helping but maybe the leads to the b/tcm need to be replaced in entirety
you scan wheel sensor data through the brake control module?
any signs of the out CV tulip rubing the bearing wires?

 

[10sec]

My lights come on just by turning on the head lights. junk grand prix.

 

[Turbocharged400sbc]

clean your ground connections on the upper rad support and the unibody rail above the trans mount

 

[10sec]

Well, after it happens, if i care enough to do it, all i have to do is turn it off and back on, bam, I have ABS. Usually i just leave it alone, cause i can care less. It's just a 3800 powered rust bucket.

 

[smug]

I really think that the terminal moves inside the connector and it freaks the car out for a second while turning one way or the other. Everything else looks good.

 

[Turbocharged400sbc]

Well, after it happens, if i care enough to do it, all i have to do is turn it off and back on, bam, I have ABS. Usually i just leave it alone, cause i can care less. It's just a 3800 powered rust bucket.

just wait till you have to deal with the electrical issues the evo will have after 11 years in the rust belt

 

[Turbocharged400sbc]

I really think that the terminal moves inside the connector and it freaks the car out for a second while turning one way or the other. Everything else looks good.

then youll probably be all set one you pull the terminals out and rebend the tang

 

[10sec]

just wait till you have to deal with the electrical issues the evo will have after 11 years in the rust belt

11years? You crazy man? I can't keep a car that long. By then i'll be able to afford the current CTS-V

 

[smug]

MMMMMMM CTS V