1) 1994/1995 module, 3 channel

2) 13" Cobra Mustang front, Wilwood 12" Drag vented rear, CNC Master 5/8 front 3/4 rear

3) It works, but need to get car on the road to really check it out.

 

Hi Sanford. I knew you had ABS I'm fishin the 4.6 forum for more testimony about who likes their ABS.

Tad240, I see you lookin down there

Thanks for the reply,
Greg

 

I have it and love it
it is out of a 98 mustang I replace the stock front brakes with 13 inch cobra brakes
I also have hydrobost power brakes which makes it almost to sensitive. it just works great

 

MK 3.1 complete kit with PBRs and Cobra rears, Wilwood MCs with balance bar, HP+ pads.
245/45-17 and 315/35-17s

ABS is a 2003 GT module, engine a 2003 GT SOHC

It took me a while to get everything working. I has one wiring error, and needed to add the data wire pair to the computer.

The manual brakes work VERY well with the HP+ pads.

ABS tends to intervene on damp road stops, and in leaves, when I least expect it (as it should with no drama, just predictable stops.)
I have made some heavy footed stops from high speed (on flat, dry surfaces) that produced tire squeal without obvious pedal pulsing. It may be that ABS would have kicked in had I pushed thru the squeal - the jury is out on this, but my season is nearly over for this year.

Doug Davis

 

Greg
I have it to but i'm not on the road yet
Mine is from a 2000 Gt with all Stock option (PBR Calipers)

I'm monitoring the other Thread that Jeff started and that you responded to about the different tire size
My tires are currently 245-45-17 and 315-35-17
I would like to swap the out for different sizes but have different challenges.
I think my only option would be 245-45-17 and would like to go to 335-35-17 since i have the wheels that can take it. That would put me in the 2.1% difference range. From i understand, i should be ok?
Thierry

 

i have it in my mk3 ,it from a 01 4.6 donor,i disconected it after almoast getting killed when a bus pulled out in front of me at 70 mph..it took forever to stop.i like it much better i can stop with the feel of my foot,but the hydroboast i like.
same goes for my truck..pulled the fuse on the abs

 

Thierry,
At 2.1% and based on what I have read, you should be OK.

Steve,
You are the first nay sayer on ABS for the FFR and the DD. Could you elaborate on your brake size and pad composition. You don't get the feeling the hydroboost makes it too easy to lock the wheels, especially the fronts? What tires/size are you running?

Did it stop poorly because the ABS was operating and fighting you?

Thanks
Greg

 

Greg, I LOVE my ABS because it saved me from crumpling into the door of a Prius that stumbled out of a hidden driveway. My Mk3 stops so quick that my ears fold forward.

ABS module from 2000 GT, PBS front, Varga rear (T-bird S/C IRS), hydroboost, 255-17 front, 285-17 rear. I've done a few practice panic stops and the pedal pulsates with slight squealing and the car stays straight. The first tests showed the right front was gripping first and pulling, but after I adjusted the coilovers for even weight per wheel, the braking has been straight with no pull.
Pete

 

That's awesome Pete. That's just the result I'm looking for when I get mine installed.

Would a wheel that grips first have more or less weight on it and more initial spring compression or less initial spring compression.

Thanks
Greg

 

1. 2001 Mustang GT ABS unit with traction control

2. 13" with Cobra PBRs front / 11.65" with T-bird calipers rear

3. Still not on the road (but will be VERY soon, so I'll let you know)

Plumbed without a proportioning valve. Not sure how it will impact things, but from what I've read the rears need maximum pressure anyway.

Tires are 315/35/17 rear and 275/40/17 front. Any idea about the diameter difference here front and rear? Hopefully I'm within the 3%???

 

Tad,
Your tires are the same as mine. Both F/R are 25.8" tall. No problems.
Greg

 

Do the inputs for these ABS units basically consist of power, ground, and the four wheel sensors?

Is there a "best" ABS module to look for and use?

 

The easiest one to use is the 94-95 standalone unit. Can't say as to the "best one".

Constant 12V, switched 12V, GND, Brake light switch, ABS lamp, diags enable, four 2-wire wheel sensors.

Greg

 

Thanks.

Do you know if that 94/95 module is a three or four channel?

 

Three

 

What would be the earliest year one might find a four channel?

 

ABS - Very Happy

Kit - Mark3
Donor build - 2000GT, 4.6L, original 5 speed transmission

I used the power steering and original ABS in my roadster. I have been driving it for two years now. The brakes are excellent with good stopping power. I have not taken it on the track, but it does very well on winding roads and handles elevation changes with no problem. I recently changed the brake fluid, no hitches. I would definitely recommend using the ABS, especially if you might run into some wet pavement.

Hope you are having as much fun with the build as I did.
Art

 

I have had ABS on two cars I built, One I drove 6000 miles and sold, although the ABS never really was needed I know it worked as I locked them up in the rain one day and they worked. ( I got caught in the rian and had a safe place to try it ..so I did).

The second one is the MKIV I have for sale. it has 1000 miles on it and I have not used the ABS.

The braking with Hydroboost is excellent. I like knowing the ABS is there . It is a comfort thing. I wish I had it in the car that has 22K on on it.

I do not care for the fact that on the solid axle it limits your wheel choices due to axle width...

Otherwise, it is a win, big time. Other than the wheel restiction I don't know of a reason not to have it.

 

I do not care for the fact that on the solid axle it limits your wheel choices due to axle width...

Otherwise, it is a win, big time. Other than the wheel restiction I don't know of a reason not to have it.

You no longer have to use the wider SN95 axles. I worked out a way to add ABS to the 87-93 Fox rear. Have your cake and eat it too so to speak.

In case you missed this from "over there"

http://www.ffcars.com/forums/showthread.php?t=260335

Thanks for everyone's input. It's great to know ABS is worth the trouble.

Greg

 

I don't know. Not sure if there is a 4CH standalone controller. 3CH worked well on the 94-95 Mustangs. The 3CH setup uses 4 wheel sensors and it pulses both rear brakes together instead of independently. Many people have added 3CH ABS after the car was built with great success and performance.

Greg

 

If I can find a four channel that is simple to use, I'd rather do that. No reason to pulse a rear wheel that isn't sliding...

I'm pretty sure a 2003 Mustang had a four channel ABS module, just have to look at the wiring schematics for it.

 

Finding it hard to resist posting a picture of 'the Situation' - (ABS, get it?) lol. Too corny I guess. Sorry.

I have ABS and brakes from a 1996 mustang cobra. It brakes well no doubt. First time I took it for a REALLY 'spirited drive', I had lower quality tires with too much air in them and maybe a non-perfect alignment. When I threshold braked it pulled hard to the right (toward the edge of the mountain) and scared the hell out of me.

Since then I've corrected these issues and love the ABS, I wouldn't go without. Granted, I'm pretty "new school" and haven't had any experience in a sporty car without ABS. I don't know that I would have the wits about me in a lockup situation to let off the brakes and adjust in time.

 

I am running a 4 channel ABS from a 2003 GT. It has a 2 wire data line to the ECM and 1 dedicated wire to the OBD/DLC connector for Ford diagnostics. I don't know for sure but I believe ABS went to 4 channel with data link to the ECM starting in 96 with the start of the use of mod motors in the Mustang.
DD

 

Would you happen to know what data the ECM is providing the ABS module?

 

OBD/DLC is the way the ford mechanic can plug there machine so they can excite the ABS pump to properly bleed the complete brakes system. I believe that this is the reason why people (small percentage) are not happy with the ABS brake system. The actual ABS system is pretty much a stand alone system.

I believe that (when I built my Roadster) there was a warning to try not to drain any of the brake fluid from the ABS module while removing it. This would minimize the headache of having the brake to respond like they should.

04 Mach 1 donor
stock mustang cobra brakes all around
Hydro-boost
4 channel ABS

 

My guess is that the vehicle speed signal (VSS) is compared to individual wheel speeds generated by the ABS probes.

 

I would also wager it involves sending wheel slip data for the traction control which will pull power from the engine to overcome wheel spin

 

I don't believe the ABS gets anything from the PCM. ABS does send a request to cut torque for traction to the PCM.

The network wires also allow ABS to recieve the traction on/off message from the instrument cluster. In these later models the trac button is wired to the cluster and the cluster sends the disable via the network over to the ABS. So if you don't use the cluster you have no easy way to disable trac.

 

Thanks for the info guys.

I wonder if you'd get a check engine light if you don't connect the ABS to the ECU on the four channel ABS units...