Question about 1989 Jeep Cherokee

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I have an 89 jeep cherokee with abs master cylinder. i would like to convert it to a dual resivor master cylinder. Is it posable and what do i need to do to make it work correctly

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To convert an old abs system to a "normal" braking system, Find a similar vehicle in a scrapyard, map out the lines so you know where they go, and then remove the parts. You will need the master cylinder and the proportioning valve (small junction block that the lines from the master go to first) from the donor vehicle.
It's best to use new lines...old rusted ones will often break and are difficult to work with. You should follow factory routing where possible but it doesn't need to be perfect, just stay clear of moving parts, hot maniflold or pipes, and make sure the lines are secure so they don't vibrate or rub against anything (where difficult, I split a rubber hose and secure it to the line to protect it). Use pressure unions not ferrule type splice junctions, and you can carefully coil any line that is a bit too long as long as it does not kink or hang down where it will get caught on anything.
After assembly, bleed the system.
One tip on removing old rusted lines... cut the line with a pair of wire cutters and use a six point socket to remove the fitting. You aren't saving the line so what you do to it does not matter and the six point socket will remove the fitting without rounding it off. Always use flair nut wrenches when installing.

Posted on Oct 03, 2010

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No pressure or fluid to rear brakes 99 jeep grand cherokee laredo

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Jeep Cherokee ABS light is on and now no brakes

Hi laustiin,
When the ABS system fails the brakes revert to standard brakes. The ABS module will not repair this for you.
The master cylinder is not likely to change anything either.
I am assuming that the pedal is full since you didn't say otherwise.
Your problem is most likely the brake booster. pump the brakes several times with the engine off to relieve any built up vacuum. While pressing down on the brake pedal start the engine. If the booster is working properly the pedal will move slightly down then press back against your foot. If it doesn't do this replace the booster.
If this doesn't help reply with more information and I will try to help you out.
Good Luck

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