How to fix damaged ABS wiring?

Post by **erikv11** » 22 Jul 2024, 17:29

96 850 NA

Wiring to the ABS sensor on passenger side was damaged during suspension/steering work. Now that corner reads low resistance, I think it was like 400 ohms, or anyway I remember it reads under half of what it should read. Fiddling with the connector including cleaning etc, has not helped so I think the wiring itself is damaged. The other three sensors all read within spec, above 1k ohms. ABS and TRACS lights are on since this happened, of course.

How to best fix this problem, any ideas?

In this setup the wiring unplugs at the sensor, you can't order new wiring. Can I run new wires there and if so what should I use? Do I have to break down and use the soldering iron (talk me off the ledge)?

Post by **Matty Moo** » 22 Jul 2024, 17:47

If I had to do it again I would Source another connector at the sensor end and any 20-24 gage wire with a good sheath. Make a new section with a heavy heat shrink at the connector end and fit the other side 8n as far I to the firewall as you can.

You have to solder it on both ends. It is what it is.

Post by **abscate** » 23 Jul 2024, 04:27

Those wires are tough to solder and hold as they need to flex with wheel steering. I must have soldered by rear, with just suspension travel three or four times before I finally broke into the kids college fund and bought a new rear harness (1999, $100 bucks)

Maybe cut one out of a donor and make the solder up high near the ABS module? I think the wire on the -1998 hard connects to the ABS module, unlike the 1999-

Post by **misha** » 23 Jul 2024, 09:48

I soldered mine and that wasn't ok.
I ended up buying used wiring and just crimping on bullet terminals(male & female) and heat shrunk them.

Connections are high near firewall.

3 years later and everything ok.

Post by **erikv11** » 23 Jul 2024, 14:03

Anybody have a source for a front ABS connector with some wiring?

Post by **abscate** » 25 Jul 2024, 05:51

erikv11 wrote: ↑23 Jul 2024, 14:03 Anybody have a source for a front ABS connector with some wiring?

Nice “ no tool” junkyard part, except for snippers for the wire.

jmartin919 · Post by **jmartin919** » 25 Jul 2024, 05:54

Why not take the whole thing?

Post by **erikv11** » 25 Jul 2024, 11:53

jmartin919 wrote: ↑25 Jul 2024, 05:54 Why not take the whole thing?

That's basically what I'm looking for yes! Cut the wiring as far back to the ABS as possible.

Post by **erikv11** » 25 Jul 2024, 11:55

abscate wrote: ↑25 Jul 2024, 05:51
erikv11 wrote: ↑23 Jul 2024, 14:03 Anybody have a source for a front ABS connector with some wiring?
Nice “ no tool” junkyard part, except for snippers for the wire.

yes
hence I posted as such in the junkyard requests subforum.
main issue is, very few p80's in the yards any more, I found zero in the yards around me

jmartin919 · Post by **jmartin919** » 25 Jul 2024, 12:26

So you're needing the connector that this plugs into plus as much wiring as you can get going back to the module? https://www.volvopartswebstore.com/prod ... 42043.html