'93 brake booster in a '98? - JeepForum.com
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Unread 09-19-2013, 04:32 PM   #1
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1998 ZJ 
Join Date: Dec 2005
Location: Hamilton, Ontario, Canada
Posts: 347
'93 brake booster in a '98?

I see that there are different part numbers for '93-'95 ZJ's versus '96-'98. What's the difference? My miner has a hissing sound that might be the booster and I have a spare from my old '93 in the garage, wondering if there's a reason it wouldn't work. I know the early booster has a sensor or switch or something on the front that the '98 may or may not not have (not near the Jeep right now) but so what, if that's all it is then I'm good to go.

'98 Grand Cherokee Limited, 5.9L, daily driver.
'98 Grand Cherokee Limited, 5.9L, $650 project.
'93 Grand Voyager wheelchair van, 3.0L, chick magnet.
'90 Trans Am GTA, 5.0L/700R4.
'98 Oldsmobile LSS, 3.8L.
SBlackfoot is offline   Reply With Quote
Unread 09-20-2013, 09:47 AM   #2
Join Date: Sep 2006
Location: Boston
Posts: 387
Mostly just a bump for ya!

If you're not sure whether it's the booster or not, pull the line from the motor off the booster and plug the line. If the sound goes away it might be your booster. I don't think bad boosters are a common problem on these - but any component can go bad even if it's not a common problem.

(if you do find out it's a bad booster, might want to check and make sure that it wasn't brake fluid from the master cyl leaking out the rear and eating the seal. Then you'd know you needed a new master cyl too)

As far as the 93 booster fitting the 98 - can't say for sure but it wouldn't surprise me. Early ones have the switch, later ones don't but that wouldn't matter on yours. (if it would work otherwise)
Happiness is clear in the cab and 150 over 150.
Aceladriver is offline   Reply With Quote

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