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    LOUD horn noise from roof (video)?

    This has me stumped. I had the windshield replaced and I replaced my headliner in my 99 XJ. Took it out on the freeway and for the first time ever it's like someone is blowing an air horn on the roof at 60mph. It's so loud it hurts your ears. It sounds and feels like it's coming from a...
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    ABS light after fixing broken speaker wires?

    Just did my broken speaker wires and replaced the faulty window control switch in the door. Went fine. But now I have the abs light lit. There's a ton of wire connections under drivers kick panel and I'm wondering if one is for ABS and got loose. Fuses are ok. Anyone know which connections...
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    Is this front end noise normal? (video)

    So I've been having what I think is a louder than normal roar around 60 mph. No change for four wheel drive. The pinion seems tight. No play in the drive shaft. Sounds like what you would expect from very aggressive tires driving next to you. It's subtle, my passengers don't notice it. Took a...
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    Replacing my cooling system, should I do the harmonic balancer while I'm in there?

    What's the lifespan of a harmonic balancer on an xj? Mine is a 99 and it has the original and the rubber is cracked but other than that I don't see any problems. Well I have the radiator out and some room should I be doing my harmonic balancer or can these last a lifetime of the vehicle?
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    Sealant needed on water pump bolt threads?

    It looks like there's a small amount of oil on the bolt and possibly weeping from the lower water pump bolt on my 99 XJ. Does it require a thread sealant or some RTV sealant?
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    FAN CLUTCH. New one seems to loose. Is this right?

    Can't find a OEM fan cluch. The napa one spins pretty free (5 seconds). The old one is much stiffer and has constant resistance. Takes a few pounds of force to move it. No spinning and no changes with temp. Should the new clutch be like this?
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    How to troubleshoot the XJ radiator explosion.

    99 XJ, 230k 80F outside, AC on, was going slow up a long hill and stopped about 5min to check email. Check Gauges light came on sitting there. Drove about 300 yards further, gauges looked fine. Parked in my driveway. As soon as I shut the engine off... I heard the coolant in the radiator...
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    What is the rear most exhaust hanger on an xj?

    I have a 99 Cherokee xj. The rear most exhaust hanger fell off. There is a little tab that sticks out and I have been looking around online trying to figure out what attaches to it but I have not found the part or picture. Does anyone know? Is it just a regular c-clamp or is there some type of...
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    Demystify the drum auto tensioner...

    Can someone explain how the auto tensioner parts work? https://imgbox.com/1f1zrXmx You have the silver cable that connects to the lower lever that locks and I presume advances the toothed wheel. When the E brake is pulled the silver cable looses slack but the lever doesn't engage the wheel...
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    Replaced upstream O2, should I do downstream?

    After a slight vibration at idle on a 99 xj that sounded like a tank I finally bit the bullet and swapped out the manifold/ upstream O2. Omg what a difference. It's like a new car. I don't know how the fuel economy will change but should I do the down stream O2 as well? The car is exempt...
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    Where to find a replacement Crank Case to intake line.

    My crankcase to intake tube snapped because it is very brittle. I am unable to locate a source of a replacement. What are people doing to replace these? Pic https://imgbox.com/wE5XYGDY
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    Good radiator hoses? (PIC)

    https://imgbox.com/NzTefP5G I bought the premium Gates lower radiator hose and comparing it to OEM it looks to be about 1/3 the thickness. The origional looks pristine and frankly I think I have more confidence it will go 20 more years. Is gates just a cheap design? Are there better ones...
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    Reset ECU after new exhaust manifold/ O2 sensor?

    Does the ECU need to be reset after swapping the cracked exhaust manifold and upstream O2 sensor?
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    Exhaust manifold kit gaskets (pic), is doughnut ok?

    Here's a picture of the gaskets that are coming with the exhaust manifold kits as compared to OEM. https://imgbox.com/9MyUf22P I ordered a remfex although the included gasket looks pretty thick. Has anyone had success with the included exhaust flange donut? Or should that be swapped out as...
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    Can this weird motor mount be factory? (PIC)

    99 XJ After much research I can't find anything on this. https://imgbox.com/hdkrWdJK My driver side motor mount has a large rubber disk in it that appears to be acting as a shim. This is a single owner car and to my knowledge no one has ever been in here. In addition it looks like the...
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    Xj replacement manifold included gasket gotten better?

    The consensus is always been that the replacement manifold are fine but the included gasket is garbage. Looking at what came with the header it looks like it has quite a bit of metal in it and it looks like it's a minimum of double the thickness of the OEM. Are these the same gaskets that...
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    Mopar Crank Sensor to Short?

    I decided to replace my crank position sensor and everybody said get Mopar. Right out of the box I noticed that the cable is over 2 inches shorter than the original. And I remember it being a pretty close fit and so I'm wondering if this is going to be a problem? PN: 56027866AC It's for a...
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    Can you check your motor mount with a jack?

    99xj Doing the exhaust manifold and expected the mount to be bad due to age but a jack under the oil pan produces no play as the engine is lifted. Is this reliable or should I toss a new one in while I'm here?
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    Silicone or EPDM Rubber hoses?

    99xj The lower radiator hose is difficult to get to and I would rather not do it again. The guys selling them say silicone hoses will last forever. I have heard reports that the silicone hoses sometimes don't seal as well, and sometimes they don't even last as long because I don't stand up to...
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    NTK or Mopar O2 sensor, or are they the same?

    99xj I ordered the ntk sensor after reading multiple posts of people saying that they were OEM. However after pulling the old one I see it has a Mopar number on it. I looked it up and sure enough there is a Mopar oxygen sensor for around a hundred bucks. The NTK 23151 looks identical minus...
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