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!!!HELP!!! my jeep is chugging coolant

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5.9 andy
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Joined: 15 Feb 2007

PostPosted: Mon Mar 05, 2007 12:37 pm    Post subject: !!!HELP!!! my jeep is chugging coolant Reply with quote

i got a 5.9 V8 with almost 140,000 miles. the coolant level drops rapidly enough that my heads up display beeps at me at about every 10 to 14 days that my coolant is low. I dont know what is wrong, there are no easily visible signs of a leak like coolant on my garage floor.
i have had only one over heating warning and that was when i was REALY getting on the gas cuz i was doing donuts. other wise my temp stays around the mid at 210.

help me!!! even a diagnosis would help, if i can get an idea to what it is my friends will be able to fix it.

PLZ HELP!!!


Last edited by 5.9 andy on Mon Mar 05, 2007 6:26 pm; edited 1 time in total
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majikxms
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Joined: 18 Feb 2004

PostPosted: Mon Mar 05, 2007 2:10 pm    Post subject: Reply with quote

Everytime I've seen this happen there has been a leak somewhere. I have to assume the Grand's have a heater core and it's leaking there, or leaking on a hose somewhere when the vehicle is running. Anybody else?
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cherokeeonly425
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Joined: 24 Jan 2007
Location: Reiter Pit,WA

PostPosted: Mon Mar 05, 2007 2:31 pm    Post subject: Reply with quote

i dont know but mine also chugs coolant like its a cold beer on hot day. =P mine does leak a little so i should check the hoses... Evil or Very Mad
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Tardis
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Joined: 07 Aug 2004
Location: Ohio

PostPosted: Mon Mar 05, 2007 3:20 pm    Post subject: Reply with quote

It could very well be leaking while it's running. It could be burning it too. Take a sample of the coolant, and test it for the presense of exhaust gases. The test tells you if coolant is getting into the combustion chamber which would indicate a bad head gasket, bad head, etc. I've mentioned this test here before. You can get a test kit from Napa, or buy it online. Most good parts stores will have it. Some places will test the coolant for you. See link.

Block Chek:
http://www.blockchek.com/kits.htm
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nori
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Joined: 01 Feb 2007

PostPosted: Mon Mar 05, 2007 4:51 pm    Post subject: Reply with quote

In Haynes' manual:

25: Coolant loss
--------------------------------
1. Too much coolant in the system
2. Coolant boiling away due to overheating
3. External or internal leakage
4. Faulty radiator cap. Have the cap pressure tested.

24: Internal coolant leakage
--------------------------------
1. Leaking cylinder head gasket. Have the cooling system pressure tested.
2. Cracked cylinder bore or cylinder head.

23: External coolant leakage
--------------------------------
1. Deteriorated or damaged hoses or loose clamps. Replace hoses and/or tighten the clamps at the hose connections.
2. Water pump seals defective. If this is the case, water will drip from the weep hole in the water pump body.
3. Leakage from the radiator core or side tank(s). This will require the radiator to be professionally repaired.
4. Engine drain plug leaking or water jacket core plugs leaking.

Hope this helps. I'm not a mechanic but you can certainly follow these guidelines provided by the manual troubleshooting and it may help you pinpoint exact problems. Do treat this serious problem before it gets out of hand and kills the engine.
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5.9 andy
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Joined: 15 Feb 2007

PostPosted: Tue Mar 06, 2007 9:05 pm    Post subject: Reply with quote

ok, my friend is gona get a pressure tester to check my cooling system tomorrow.
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1fox2go
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Joined: 01 Dec 2004
Location: Fishersville, Virginia

PostPosted: Tue Mar 06, 2007 10:36 pm    Post subject: Reply with quote

If the pressure check fails its going to be the problems mentioned above, hole in radiator, cap is bad, cracked head, head gasket,

since you said it got hot my guess is head gasket

does it have problems starting or idling when its cold? Does it smell like its burning antifreeze from the tail pipe?
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96 Cherokee 7.5 inch TnT long arm Locked F/R, D44 rear, 4.56s, 35x12.50 Muds/36x12.50 TSLs
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5.9 andy
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Joined: 15 Feb 2007

PostPosted: Wed Mar 07, 2007 4:06 pm    Post subject: Reply with quote

no propblem whith idle or starting up when its cold.


im not shure, what dose burning antifreeze smell like?
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1fox2go
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Joined: 01 Dec 2004
Location: Fishersville, Virginia

PostPosted: Wed Mar 07, 2007 11:44 pm    Post subject: Reply with quote

ehh you can tell when it burns antifreeze it kinda smells like antifreeze, not to be a smartass or anything
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5.9 andy
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Joined: 15 Feb 2007

PostPosted: Thu Mar 08, 2007 4:22 pm    Post subject: Reply with quote

ok, thanks
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topsideroyal
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Joined: 07 Oct 2006

PostPosted: Tue Mar 13, 2007 5:50 pm    Post subject: Reply with quote

I had the same exact problem... my radiatior went bad and wasnt holding any pressure. hopefuly it is your cap cause i picked one up for 5 bucks at the local NAPA.
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5.9 andy
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Joined: 15 Feb 2007

PostPosted: Tue Mar 13, 2007 7:28 pm    Post subject: Reply with quote

ok, next time im near my local NAPA ill stop by and pick one up, mabe that will do the trick.
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topsideroyal
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Joined: 07 Oct 2006

PostPosted: Tue Mar 13, 2007 7:53 pm    Post subject: Reply with quote

well does it look like coolant is coming outa the cap, like is there coolant splashed on top of the cap and fan shrouding if not then its probly not the cap but if you do go by NAPA or whatever part store, ask them to pressure test the cap before you buy a new one.
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nori
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Joined: 01 Feb 2007

PostPosted: Tue Mar 13, 2007 7:55 pm    Post subject: Reply with quote

topsideroyal wrote:
ask them to pressure test the cap before you buy a new one.


Noob question: how do I pressure test the radiator cap? Thanks for replies.
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cajzmere
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Joined: 19 Jul 2005
Location: Rochester, NY AKA NY Tundra.

PostPosted: Wed Mar 14, 2007 3:54 pm    Post subject: Reply with quote

Burning antifreeze smells sweet, like burnt sugar and tends to make white smoke. If you were losing that much thru your head gasket, you'd have a plume of white smoke evry time you stepped on the gas, or your oil would turn milky white. Try putting a clean piece of cardboard under your truck right after you've topped off the coolant and after you've driven awhile to get the engine hot. Leave the engine idling for about 10 minutes,I BET you'll see green spots that if you taste a TINY bit of will taste sweet and will be coolant. If that doesn't work, go buy some ultraviolet dye, at NAPA auto parts store, and follow the directions. My gut tells me that your water pump is leaking, as this usually only leaks bad if the engine is running. To check your water pump, look underneath the water pump, behind the pulley, use a flashlight, theres a tiny little hole called a "weep hole" it's hard to see. Look for water tracks, the coolant will dry up really fast 'cause it's hot right there. Good Luck!! Very Happy
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