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XJ Ask the Question Thread
11-12-2014, 06:49 PM
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
11-12-2014, 06:55 PM
CF Veteran
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Location: Fauquier County, Virginia
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Had the brakes go out on my XJ. It was by the grace of God I was not driving in rush hour DC area traffic or going 60 down route 17... which is where I was headed to test the new belt for noise/snap. On a whim, I checked the mail first, and that is where it happened on a small country road 100 yards from my house.
Confirmed it to be the passenger side rear wheel area. Havent had a chance to pull the wheel. Did a disc brake conversion. I suspect from the distinct balloon pop noise that the rubber hose from the donor ZJ gave way. What do yall think?
Also, it did when I pushed the brake pedal to the floor. I have not swapped the proportioning valve yet. Could that have a hand in this?
Thanks yall.
Confirmed it to be the passenger side rear wheel area. Havent had a chance to pull the wheel. Did a disc brake conversion. I suspect from the distinct balloon pop noise that the rubber hose from the donor ZJ gave way. What do yall think?
Also, it did when I pushed the brake pedal to the floor. I have not swapped the proportioning valve yet. Could that have a hand in this?
Thanks yall.
11-12-2014, 07:24 PM
CF Veteran
Had the brakes go out on my XJ. It was by the grace of God I was not driving in rush hour DC area traffic or going 60 down route 17... which is where I was headed to test the new belt for noise/snap. On a whim, I checked the mail first, and that is where it happened on a small country road 100 yards from my house.
Confirmed it to be the passenger side rear wheel area. Havent had a chance to pull the wheel. Did a disc brake conversion. I suspect from the distinct balloon pop noise that the rubber hose from the donor ZJ gave way. What do yall think?
Also, it did when I pushed the brake pedal to the floor. I have not swapped the proportioning valve yet. Could that have a hand in this?
Thanks yall.
Confirmed it to be the passenger side rear wheel area. Havent had a chance to pull the wheel. Did a disc brake conversion. I suspect from the distinct balloon pop noise that the rubber hose from the donor ZJ gave way. What do yall think?
Also, it did when I pushed the brake pedal to the floor. I have not swapped the proportioning valve yet. Could that have a hand in this?
Thanks yall.
11-13-2014, 01:11 AM
CF Veteran
Join Date: Aug 2011
Location: San Jose
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Year: 89
Model: Cherokee
Engine: 4.0 I6
Looks like the v6 that a few unlucky xj's were burdened with. But it's hard to say, it looks like there's a bunch of other crap thrown on it and I'm on my phone
Edit: im gonna guess 4 banger, final answer
Edit: im gonna guess 4 banger, final answer
Last edited by JerrytheJeep; 11-13-2014 at 01:14 AM.
11-13-2014, 01:52 AM
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
11-13-2014, 02:22 AM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
11-13-2014, 08:58 AM
CF Veteran
Its at rays. Anything worth pulling off it?
11-13-2014, 09:00 AM
Herp Derp Jerp
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Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
11-13-2014, 10:22 AM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
11-13-2014, 10:40 AM
CF Veteran
11-13-2014, 01:23 PM
Newbie
Join Date: Nov 2014
Location: WA
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Year: 1990
Model: Cherokee
Engine: 4.0 straight 6
Ok new here! I have spent the past several DAYS attempting to find my gremlin. Here we go, Jeep starts decent. Then the whistle starts, ear brake pedal. There seems to be a rubber gasket that has something under it that is moveable. So we start driving, temp doesn't matter. the hissing continues until we hit the brake. one of 2 things occur. first the idle drops drastically or we just stall out. Nothing like highway speeds to a stalled vehicle. headed down now to get a power brake booster check valve and new upper rad. hose. before I go, please say this is something that sounds like it may help.
11-13-2014, 07:23 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
2000+ TJ Wrangler and WJ Grand Cherokee 4.0L engine blocks interchange.
XJ/ZJ blocks and 2000+ TJ/WJ blocks do not interchange without significant modifications. (1991 to 1995 YJ and 1997-1999 4.0L TJ Wrangler blocks will interchange in XJ/ZJ and visa-versa).
TJ/WJ 4.0L Engine blocks underwent clean sheet design changes effective in the 1999 WJ Grand and 2000 TJ Wrangler. These blocks are not interchangeable with XJ/ZJ engine blocks. The reason is motor mount bolt holes and belt driven accessory mounting bolt holes are in different locations, or not present at all, TJ/WJ vs. XJ/ZJ.
XJ: "Regular" (not Grand) Cherokees 84-01
ZJ: Grand Cherokee 93-98 (Gen1)
WJ: Grand Cherokee 99-04 (Gen2)
YJ: Wrangler 87-95 (Gen1)
TJ: Wrangler 97-06 (Gen2)