Brakes are failing

[CactusJacked]

Considering you opened up the lines, you would have gotten air into the ABS system, and conventional brake pedal bleeding isn't going to get the air out. The brakes are bled conventionally, then the ABS needs to be activated using a DRB scan tool (a kind of expensive toy for the shadetree mechanic to have) hooked up to your ALDL port, then bleed the brakes a second time. This procedure is described in the factory service manual, if you have one. The bottom line is, unless you or someone you know has an ABS scan tool, you need to take it in to get the brake systems thoroughly bled.

 

[twowings]

The procedure costs about $125.00 at my Jeep dealer...they CLAIM you must do the second brake bleed concurrently with the ABS reset...I'm not 100% convinced but they wouldn't do it without doing the second bleed...liability issues...

 

[night9crawler95]

I don't have an ABS system. So that's a no go.

I have a 2002 3.7L V6

CMEdge

 

[CactusJacked]

The procedure costs about $125.00 at my Jeep dealer...they CLAIM you must do the second brake bleed concurrently with the ABS reset...I'm not 100% convinced but they wouldn't do it without doing the second bleed...liability issues...

If air is trapped in the ABS unit, and then released into the lines, how else are you going to get it out but to bleed the brakes again? That's a moot point now though.

I don't have an ABS system. So that's a no go.

Of all the things you could have said, it had to be that huh? lol
What bleed procedure are you using?

 

[night9crawler95]

I've been trying the hand pressure bleeder. And gravity bleeding. Neither is turning off the emergency break light.

I have someone who is going to put the jeep on a lift and see if it's the sensor for the emergency break and check for a bad grounded wire.

CMEdge

 

[uss2defiant]

My bet is the sensor.
Since you bench bleed the MC, you should be good on top of you bleeding the lines.

 

[M38 Bob]

Was ABS an option then? My 02 V6 Lib Sport does have it.

Bob

EDIT; Wish it didn't.

 

[night9crawler95]

Was ABS an option then? My 02 V6 Lib Sport does have it.

Bob

EDIT; Wish it didn't.

I think it was an option because in the manual it does say next to the ABS section (if equipped). Well, I'll find out today.

CMEdge

 

[uss2defiant]

no built sheet?

 

[CactusJacked]

ABS was a $600 option. I prefer having it, ABS saved my ars in a different vehicle in an ice storm. The pickup truck behind me wasn't stopping very well though, and had to go up the curb and into the grass to avoid hitting me.

 

[night9crawler95]

No

CMEdge

 

[night9crawler95]

So I can't get the jeep to a lift today so any other help would be apreciated.

CMEdge

 

[M38 Bob]

Jack, I like/appreciate it on my daily driver Silverado, and think it's a great option overall for most run of the mill drivers. Just on what's going to be basically a toy would I prefer simpler.

Bob

 

[night9crawler95]

Jack, I like/appreciate it on my daily driver Silverado, and think it's a great option overall for most run of the mill drivers. Just on what's going to be basically a toy would I prefer simpler.

Bob

I bought the Jeep used so it wasn't by choice. [emoji53] Any other suggestions?

CMEdge

 

[the_dealer]

Same thing happened to mine. Here's what you do. Remove the pin that goes thru the ears holding the reservoir onto the Mc. Carefully wiggle and pull the reservoir off(do old one first until you see how it goes just in case), inspect the o-rings, now do the same for the new reservoir and out the old one onto the new Mc. Put the pin back, bleed brakes, and profit.

The Raybestos, brake best, and other parts house brands don't use the right fluid level sensor. If I had a dollar everytime I had to do that on a Jeep I'd be at the beach drinking a beer. I'll see if I got a spare and try to make a video

Sent from my SAMSUNG-SM-G870A using Tapatalk

 

[night9crawler95]

Same thing happened to mine. Here's what you do. Remove the pin that goes thru the ears holding the reservoir onto the Mc. Carefully wiggle and pull the reservoir off(do old one first until you see how it goes just in case), inspect the o-rings, now do the same for the new reservoir and out the old one onto the new Mc. Put the pin back, bleed brakes, and profit.

The Raybestos, brake best, and other parts house brands don't use the right fluid level sensor. If I had a dollar everytime I had to do that on a Jeep I'd be at the beach drinking a beer. I'll see if I got a spare and try to make a video

Sent from my SAMSUNG-SM-G870A using Tapatalk

I will surely try that ASAP and let you know the results. I GREATLY appreciate this suggestion!!!!

CMEdge

 

[megatone]

Same thing happened to mine. Here's what you do. Remove the pin that goes thru the ears holding the reservoir onto the Mc. Carefully wiggle and pull the reservoir off(do old one first until you see how it goes just in case), inspect the o-rings, now do the same for the new reservoir and out the old one onto the new Mc.

Excellent idea. I've done this before on a few different vehicles (not Jeeps though).

When removing the brake fluid reservoir from the master cylinder of a vehicle having the MC still bolted into the vehicle, what I do is: I will take one of those baby booger sucker things and use it to suck out as much of the brake fluid as possible, so as not to have brake fluid splash every where when the reservoir finally pops loose from the body of the MC. Might not be able to get the tip of the booger sucker all the way down to the bottom of the reservoir to retrieve all the fluid, so here is where a short length of vacuum hose comes in handy on the end of the sucker.

 

[night9crawler95]

Excellent idea. I've done this before on a few different vehicles (not Jeeps though).

When removing the brake fluid reservoir from the master cylinder of a vehicle having the MC still bolted into the vehicle, what I do is: I will take one of those baby booger sucker things and use it to suck out as much of the brake fluid as possible, so as not to have brake fluid splash every where when the reservoir finally pops loose from the body of the MC. Might not be able to get the tip of the booger sucker all the way down to the bottom of the reservoir to retrieve all the fluid, so here is where a short length of vacuum hose comes in handy on the end of the sucker.

It's called an aspirator.

CMEdge

 

[CactusJacked]

I don't have a booger sucker outer thing, I use a cork-screw! lol
But for sucking out the reservoir, I use a syringe.

 

[twowings]

It's called an aspirator.

CMEdge

I'm a nurse and all the doctors, nurses, and everyone I work with calls it a "BBG" (baby booger getter).....:gr_grin: