karnavor

I removed calibers, then mounted new ones with new pads.
Ive bled all the lines, and still no pressure on brakes.

98 grand cherokee.

Ive bled rear and front, and still no breaks... anyone have a clue of how to fix..cause i dont.
thanks

tsconver

did you bleed the ABS pump

The correct procedre anyime air is introduced into the system is to do a manual bleed, followed by a ABS pump cycle, followed by another manual bleed. The ABS pump has to be cycled with a DRBIII scan tool or by building a bypass switch to force the pumps to cycle. If you do not do this you can have air trapped inteh ABS pump that will never come out.

robertj

Edit: I just realized this was posted in the GC forum, so ABS is probably the issue as stated above. We were typing at the same time tsconver... sorry about the slip.

Unfortunately, your attempts at bleeding aren't working. From my own experience at restoring muscle cars, I got tired of having trouble bleeding brakes after replacing components. I found a reverse bleeder system works really well and simplifies the job when you're a one man show too. They are kind of pricey, but if you're a DIY it's a great tool to have. Just getting them done in one shot and saving time is worth the money alone to me. It's the easiest way to flush brake fluid bar none as well. Newer cars with ABS are a whole different animal, but I highly recommend the kit for non-ABS brakes.

There are different brands out there, but if you're interested in more information I'll look up the name of my kit when I get home. It escapes me right now.

karnavor

how do you know if you jeep has abs brakes..
i see no indication of it.

nick_n_ii

'98 Grand Cherokee it has them.. As far as I know all Grand Cherokee's have them... ABS that is..

tsconver

I think Nick is right that all Grands have ABS, but look at your master cylinder and see if the lines go into another box close the master cyclinder that has electrical connections and a small motor on it then exit there to go to the brakes themselves. That box is your ABS pump and is where air can migrate to if you open up your system to replace parts.

You should also have an ABS light (if it has not burnt out) that comes on when you start the car as well as abs sensors at each wheel hub behind the brake itself with a ring that looks like a square cut gear.

dadscool

I have a 93 zj in the process of doing a complete brake job and have a obdII tester. How do I go about bleeding the antilock pump by using my tester? Where does the tester hook up?
Dave

ol"blue

See the above quotes. An obdII tester isn't what you need.

SeriousOffroad

Make sure you installed the calipers on the right (correct) side. Bleed ports should be above the hose.

SpooledupRacing

bleeders need to point up... also did u replace the calipers or just replace the pads?

if u just replaced the pads then u shouldn't have had to bleed the calipers..