PontiacBonnevilleClub.com

So, as an unintended diversion from my tranny problems, I tried to move the car and the brake lines blew out... turns out all 6 lines passing between the frame and tranny are rotted to hell.

During the process, I screwed up and have mixed up which ABS port goes to which rear brake. Luckily, I have everything else straight. Does anyone have a ABS diagram or a port-out of the ABS?

Thanks in advance.

BKNJ

Any chance you can line up the old brake lines and figure it out?

IIRC the ABS pump should have each port indicated.

Also IIRC, it should be that the top two ports go to the front wheels, and the bottom two ports are to the back two. It also should line up by side looking at it from the front of the car, so the driver's side front wheel would be the upper right port, the driver's side rear would be the lower right port, and vice versa for the passenger side.

I re-did the brake lines on my old LeSabre, and it was a solid couple of days, even with "NOS" Southern junkyard pre-flared lines!

You may be lucky and only need to patch that section. Otherwise, I'd re-do them all. If those blew, the rest are only a matter of time.

EDIT: I'm totally wrong, look down-thread to find correct information!!!

LeSabre in Buffalo wrote:IIRC the ABS pump should have each port indicated.

Everyone is telling me that, but I don't see ANY markings for the 4 outlet ports. Only markings are on top for the MC1 and MC2... which I know where these go.

Also IIRC, it should be that the top two ports go to the front wheels, and the bottom two ports are to the back two. It also should line up by side looking at it from the front of the car, so the driver's side front wheel would be the upper right port, the driver's side rear would be the lower right port, and vice versa for the passenger side.

The top two ports both have smaller line nuts than the lower two ports... and I know for sure that the front drivers side was on the lower left port (as viewed from the front). The point at which I got screwed up is when I thought I was cutting the two rear lines and it turned out not to be the case... as the order of the lines between the tranny and frame from top to bottom were: MC1, MC2, FR, R?, R?, FL.

I re-did the brake lines on my old LeSabre, and it was a solid couple of days, even with "NOS" Southern junkyard pre-flared lines!

You may be lucky and only need to patch that section. Otherwise, I'd re-do them all. If those blew, the rest are only a matter of time.

Oh, I was definitely redoing all the lines that are bad in this section... the rear lines behind the door and the FR line was mostly fine.

Unfortunately, due to the bubble flares and the goofy line nuts, I had to use the old ends... so I have line 12 unions and 24 double flares in the system now. The old lines were so rotted and stubborn to remove or get out of the way, thats how I lost track of which rear port goes to which wheel...

Can someone at least read of what the two ports on the left side (as viewed from the front) are marked on the ABS unit of their car. Then I can use process of elimination and finish up this project tomorrow. I desperately need to finish this tomorrow, actually.

Thanks in advance.

BKNJ

J Wikoff wrote:Any chance you can line up the old brake lines and figure it out?

I've tried that... but I'm not confidant enough in that. At this point, I really need a guide to be sure.

Of course, this has to be back together and bleed tomorrow... so at some point, I'm going to go with my guess... but if I'm wrong, I'm going to have serious issues swapping the lines, as one line will be too short and the other too long.

BKNJ

After much searching, I finally found clear shots of an ABS modulator on eBay without the bracket. Its nearly impossible to see the labels even if you know where they are. I could see nothing on mine.

I created an updated graphic showing the ports and where they go. Feel free to post, copy, put in Techinfo, etc.



BKNJ

Wow, I was totally wrong! Sorry about that! I guess it got you figuring out what was the correct information, though. I'll edit my post to reflect I'm totally off my rocker there...

LeSabre in Buffalo wrote:Wow, I was totally wrong! Sorry about that! I guess it got you figuring out what was the correct information, though. I'll edit my post to reflect I'm totally off my rocker there...

Well, its hard to remember this stuff. I've got a photographic memory, and I still managed to screw up this stuff by staring at it too long. One thing I've noticed about ABS systems is that they seem to be mixed up in the way the lines are routed... RR going next to LF and vice versa. It must have something to do with the way they work internally.

BKNJ