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Unread 11-24-2012, 01:51 PM   #1
cpdr26
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1999 XJ Cherokee 
 
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Location: Chesterton, IN
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Surprise! A leak and im at work

Hey everyone, the xj has been having some heat issues lately, not getting very warm. I've also been having some unexplained coolant loss and haven't been able to figure out why, till today. I drove to work and then came back later to get something out of the jeep and saw this.

Im on my phone to upload the picture so I'll login when I get to a computer shortly and type the rest.

forumrunner_20121124_145106.jpg

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Unread 11-24-2012, 02:02 PM   #2
cpdr26
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Okay! Now at a computer. (also 99 XJ sport 4.0L 175k miles) So....here's what's been done.

Over a year ago:
- New radiator

In past 6 months:
- New head
- New head gasket
- New water pump
- New thermostat
- System flush

In past month:
- Flushed out heater core with Prestone solution mutiple times, ran hot water through til clean came out
- approx 2 gallons of coolant added to system


Everything has been totally cool until about 2 months ago. The heat has been very lacking, getting almost 'warm'. I fill the coolant level back up, and that seems to help, but then it would go back to being just kind of warm. So now during the daylight for the first time I see the drips underneath the front! Being awake during the day helps with diagnosing problems!

I opened up the hood and there is no coolant that I can see sprayed anywhere, or dripping. I'm not able to get underneath it to take a look until maybe Monday...

Anyone have some thoughts or suggestions what this is from or what could be suspect?
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Unread 11-24-2012, 02:53 PM   #3
wgirvine
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There is reallly no magic to fixing a leak... get in there with a flashlight and find out where it's leaking from. Then fix it. Sorry, but there is no way any of us can look into a crystal ball and tell you where it's leaking from. I take it back... here, let me give you the ultimate truth about coolant leaks: it's leaking from some part of the engine that carries coolant. Does that help? Probably not, but that's the way it is. Go get your flashlight...

It also sounds like you're saying that the heater doesn't put out much heat, yes? There are two reasons for this: thermostat is stuck open, or the blend door in the heater box isn't working.
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Unread 11-24-2012, 04:50 PM   #4
sAe23
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I'll hazard a guess:
Lower radiator hose, where it connects to the radiator.
Or a cracked radiator.
Is it an all aluminum radiator?
And can't you take 5 minutes to look before Monday?? Put on a dirty shirt, put a piece of cardboard on the ground?? AAANyway...
Hope you figure it out. Good luck.
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Unread 11-24-2012, 09:10 PM   #5
djb383
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Bumper leaking? Just kidding, but as said, better start looking asap.
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Unread 11-25-2012, 12:33 AM   #6
Reptile
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Quote:
Originally Posted by djb383 View Post
Bumper leaking? Just kidding, but as said, better start looking asap.
Leaking bumper is a serious issue caused by subatomic particles hitting the condenser and bouncing back, breaking down the bumper atoms. A known remedy consists of placing a picture of Chuck Norris on the bumper to use as a deterrent.

Here a suggestion: from a cold start step out and watch the engine as it warms up. I chased a mistery leaks for months, and it turned out to be a crack in the radiator. Only happened when engine was somewhere between cold and normal engine temperature, as the radiator (& crack) expanded.
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Unread 11-25-2012, 10:53 AM   #7
YoureverydayXJ
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Quote:
Originally Posted by Reptile
Leaking bumper is a serious issue caused by subatomic particles hitting the condenser and bouncing back, breaking down the bumper atoms. A known remedy consists of placing a picture of Chuck Norris on the bumper to use as a deterrent.

Here a suggestion: from a cold start step out and watch the engine as it warms up. I chased a mistery leaks for months, and it turned out to be a crack in the radiator. Only happened when engine was somewhere between cold and normal engine temperature, as the radiator (& crack) expanded.
Haha! Somewhere between this and wgirvine's post you should be able to get it.
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Unread 11-25-2012, 10:58 AM   #8
GetLifted
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There are 5 or so drip areas. The leak is likely up high and running into a few locations before it drips. Likely the radiator, hoses, thermostat housing, or waterpump from the pic above.
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Unread 11-25-2012, 06:35 PM   #9
wgirvine
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Quote:
Originally Posted by GetLifted View Post
Likely the radiator, hoses, thermostat housing, or waterpump...
Well, that narrows it down!
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Unread 11-26-2012, 01:15 AM   #10
JeepJohn92
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Quote:
Originally Posted by GetLifted View Post
Likely the radiator, hoses, thermostat housing, or waterpump from the pic above.
IF it is one of those, take a day when you have about an hour or so and get some new gaskets and put some silicone sealant on there and make sure its torqued on right. As always, make sure mating surfaces are dry and clean. Possible blow gasket but unlikely due to the position of the leak. Im agreeing with possible radiator hose leak or rad crack.
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Unread 11-26-2012, 06:09 AM   #11
tjwalker
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It is NOT that unusual to see a new(er) radiator fail. I've seen it quite a few times.

Of course, a comprehensive inspection is warranted. With the BEST light you can get your hands on. Leaks can be very difficult to find oftentimes. Search both engine bay and from underneath. Get it on ramps or a hoist if you can't find it.
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Unread 11-26-2012, 06:09 AM   #12
cruiser54
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Have a shop put a pressure tester on the system. It will leak and you'll see it.
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Unread 11-27-2012, 10:57 AM   #13
cpdr26
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I think I may have found the problem.Looks like a gear clamp might be having an issue causing it to leak out not seal properly. I took pictures and I hope they look better on screen than on my phone.
forumrunner_20121127_115610.jpg   forumrunner_20121127_115638.jpg   forumrunner_20121127_115658.jpg  
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Unread 11-27-2012, 10:57 AM   #14
cpdr26
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forumrunner_20121127_115733.jpg
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Unread 11-27-2012, 02:51 PM   #15
JeepJohn92
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the hose clamp on the radiator hose?
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