Coolant goes down? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-11-2012, 10:27 PM   #1
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Coolant goes down?

I had my 3.8 engine changed recently by the dealer due to oil consumption and since then I noticed that my coolant level has dropped about an inch from full, I refilled it to the mark, and it's down again half an inch after a month. I'm thinking taking it back to the dealer, or should I wait longer and keep watching it ?
Thanks.

gohard is offline   Quote Quick Reply
Old 04-11-2012, 11:01 PM   #2
Jeeper
 
Join Date: Jan 2012
Location: Florida
Posts: 707
loose clamp?

hi, you may want to take it back to ur service dept, it could be a loose
clamp and easy to fine and fix.

firehawk is offline   Quote Quick Reply
Old 04-11-2012, 11:05 PM   #3
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Haven't noticed any leaks when I checked.
gohard is offline   Quote Quick Reply
Old 04-11-2012, 11:08 PM   #4
Jeeper
 
themoneypit's Avatar
 
Join Date: Apr 2011
Posts: 517
Make sure it's not burning and coming out of your exhaust.
themoneypit is offline   Quote Quick Reply
Old 04-11-2012, 11:31 PM   #5
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Quote:
Originally Posted by themoneypit View Post
Make sure it's not burning and coming out of your exhaust.
How do I check that?
gohard is offline   Quote Quick Reply
Old 04-12-2012, 12:18 AM   #6
Jeeper
 
wrangler0's Avatar
 
Join Date: Jan 2010
Location: NY
Posts: 827
Quote:
Originally Posted by gohard

How do I check that?
I believe white smoke will be coming out of the exhaust
__________________
2010 Black Sahara
Rugged Ridge XHD Front & Rear Bumper, Rugged Ridge Side Armor
wrangler0 is offline   Quote Quick Reply
Old 04-12-2012, 07:12 AM   #7
Jeeper
 
OH9JK's Avatar
 
Join Date: Oct 2011
Location: Graham, NC
Posts: 738
Using coolant is not normal....I would head back to the dealer to get it checked out or at least documented.
__________________
Crowded elevators smell different to midgets.
OH9JK is offline   Quote Quick Reply
Old 04-12-2012, 07:20 AM   #8
Jeeper

WF Supporting Member
 
chucky cheese's Avatar
 
Join Date: Dec 2006
Location: We eat stuff outa ditches!
Posts: 3,952
Are you going by the coolant bottle or the actual radiator? I would say it is all of the voids and expansion and contraction going on until it fills completely.
__________________
It ain't easy being cheesy:

Sometimes I make decisions like famous people.
George Armstrong Custer "lets go over that hill, I think those are friendly indians!"

Titanic's Captain Smith "What icebergs? Full speed ahead!"
chucky cheese is offline   Quote Quick Reply
Old 04-12-2012, 07:44 AM   #9
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
There are 2 fill levels on the coolant resevoir. One for a hot engine and one for a cool engine. If you fill it to the hot level when the engine is cool it will go out the overflow tube. Then when you check it cool, it will look "low".
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-12-2012, 09:34 AM   #10
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Quote:
Originally Posted by chucky cheese View Post
Are you going by the coolant bottle or the actual radiator? I would say it is all of the voids and expansion and contraction going on until it fills completely.
By the coolant bottle.
gohard is offline   Quote Quick Reply
Old 04-12-2012, 09:36 AM   #11
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,916
Don't goby the coolant reserve bottle--it's level changes depending on the engine length of ops/temps/cooldown-etc-

Read the manual and checkit with the Dipstick-like Dab suggests-

If it ain't leaking--it ain't going anywhere, it's just the various levels you're looking at !

If there's a leak--let it sit in a clean (garage) spot and run for 5 minutes--then look underneath--usually leaks will start just under the radiator, where the tranny lines have antivibe rubber conns, bright red dense liquid- !

Good luck

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 04-12-2012, 09:46 AM   #12
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Quote:
Originally Posted by JIMBOX View Post
Read the manual and checkit with the Dipstick-like Dab suggests-

If it ain't leaking--it ain't going anywhere, it's just the various levels you're looking at !
I'm not sure I understand the checking with the dipstick part "like Dab suggested" and I did read the manual.

Can't it be an internal leak, where the coolant burns?
gohard is offline   Quote Quick Reply
Old 04-12-2012, 09:53 AM   #13
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,916
I'm sorry, I meant "DAGGO"-

Quote:
Originally Posted by gohard View Post
I'm not sure I understand the checking with the dipstick part "like Dab suggested" and I did read the manual.

Can't it be an internal leak, where the coolant burns?
You've already stated that you used looked at the reserve bottle and I stated not to do that--

The "dipstick" has two "LIMIT MARKS"--hot/cold and you have to (in park) run the auto thru all the gears, then checkit-

The coolant won't "burn"-it is either underfilled/overfilled or leaks-

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 04-12-2012, 09:55 AM   #14
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Quote:
Originally Posted by daggo66 View Post
There are 2 fill levels on the coolant resevoir. One for a hot engine and one for a cool engine. If you fill it to the hot level when the engine is cool it will go out the overflow tube. Then when you check it cool, it will look "low".
Quote:
Originally Posted by gohard View Post
By the coolant bottle.
Quote:
Originally Posted by gohard View Post
I'm not sure I understand the checking with the dipstick part "like Dab suggested" and I did read the manual.

Can't it be an internal leak, where the coolant burns?
Dipstick? Coolant burns? Huh?

Look at the "coolant bottle". The are two marks on the side of it. One, near the top, says "Full - Hot". The other, much lower, says "Full - Cold.

That bottle is for the overflow of your radiator. Back in the day there were no bottles, just a tube hanging off your radiator. When the radiator got hot and the fluid expanded, excess would pour on the ground. Now there is a resevoir to catch it.As long you are somewhere between those marks, you're good.

If you're still not sure, take off the radiator cap while the engine is cool. You should see fluid.

The only time coolant burns is when you have a blown head gasket. When that happens, you won't need to ask anyone, you'll know. There will be a huge cloud of white smoke behind you and your exhaust will smell "sweet".
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-12-2012, 10:05 AM   #15
Jeeper
 
tropical36's Avatar
 
Join Date: Nov 2011
Location: SW Florida
Posts: 309
How about, don't add any coolant for awhile. If it continues to drop, then something is wrong. If it doesn't, then it's just the changes in engine temp between the cold and hot levels. In fact, if you fill it to the cold mark when the engine is indeed cold, then check it again hot, you should see an increase.
__________________

2010 Wrangler JKUSport Islander, 4WD Auto @ 3.73:1, Sahara wheels and Tires, Trailer Tow Group, Freedom Hardtop, air bag leather seats, Sirius Infinity and pushes a Motor Coach.
tropical36 is offline   Quote Quick Reply
Old 04-12-2012, 10:34 AM   #16
Member
 
Join Date: Jul 2011
Location: Someplace in Africa
Posts: 3,288
i know mine went from the high point on the reservoir to the lowest part on it because when i off road it spills over. atleast thats what i think.
pluke the 2 is offline   Quote Quick Reply
Old 04-12-2012, 03:40 PM   #17
Jeeper
 
gohard's Avatar
 
Join Date: Mar 2012
Posts: 206
Thanx guys, I don't think is anything serious, I won't add for a while to see how much it will go down in a longer period of time, then take it from there.
gohard is offline   Quote Quick Reply
Old 04-13-2012, 12:55 PM   #18
Jeeper
 
wrangler0's Avatar
 
Join Date: Jan 2010
Location: NY
Posts: 827
This thread made me check my coolant level after I got home last night.

It's sitting a little bit below the MIN line.

There was a leak in my trans cooler lines a few months ago. Dealer replaced them. Its no longer leaking as far as i can tell Maybe they didn't top off the coolant?

Should I add coolant at all?
__________________
2010 Black Sahara
Rugged Ridge XHD Front & Rear Bumper, Rugged Ridge Side Armor
wrangler0 is offline   Quote Quick Reply
Old 04-13-2012, 01:00 PM   #19
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Yes, add the coolant to the proper level. It's something that should be checked on a regular basis along with oil, trans, brake fluid, etc. Aren't people taught to check these things any more? It's part of what I teach my kids when teaching them how to drive.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-13-2012, 02:01 PM   #20
Jeeper
 
wrangler0's Avatar
 
Join Date: Jan 2010
Location: NY
Posts: 827
Quote:
Originally Posted by daggo66
Yes, add the coolant to the proper level. It's something that should be checked on a regular basis along with oil, trans, brake fluid, etc. Aren't people taught to check these things any more? It's part of what I teach my kids when teaching them how to drive.
I know silly question. It says MIN for a reason, right?!
__________________
2010 Black Sahara
Rugged Ridge XHD Front & Rear Bumper, Rugged Ridge Side Armor
wrangler0 is offline   Quote Quick Reply
Old 04-13-2012, 03:01 PM   #21
Jeeper
 
themoneypit's Avatar
 
Join Date: Apr 2011
Posts: 517
MIN is the minimum there should be
themoneypit is offline   Quote Quick Reply
Old 04-13-2012, 03:10 PM   #22
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Quote:
Originally Posted by wrangler0 View Post
I know silly question. It says MIN for a reason, right?!
Look closely, it will have a cold level and a hot level.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-13-2012, 03:53 PM   #23
Jeeper
 
wrangler0's Avatar
 
Join Date: Jan 2010
Location: NY
Posts: 827
Quote:
Originally Posted by daggo66

Look closely, it will have a cold level and a hot level.
Yep I see it were it says that tho on mine it says MIN & MAX.

I was just referencing my previous post where I asked if I should fill it to the MIN mark since its a little low. Duh?!
__________________
2010 Black Sahara
Rugged Ridge XHD Front & Rear Bumper, Rugged Ridge Side Armor
wrangler0 is offline   Quote Quick Reply
Old 04-13-2012, 07:06 PM   #24
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,142
Quote:
Originally Posted by wrangler0 View Post
Yep I see it were it says that tho on mine it says MIN & MAX.

I was just referencing my previous post where I asked if I should fill it to the MIN mark since its a little low. Duh?!
Anywhere in between is fine.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-13-2012, 07:41 PM   #25
Jeeper
 
JkJared's Avatar
 
Join Date: Mar 2011
Posts: 331
Cold engine= full/Max line. Hot engine= inch or two lower. Your coolant level will fluctuate up and down that's normal. Check after the jeeps sat all night as it will all drain out of the cooling system back into the bottle. Also I had low coolant and it ended up being a leaking intake manifold gasket and the coolant was seeping out near the water pump area. Check for any darkish resin or goo in around the intake or engine. Check hoses and your rad. I'll attach a picture of what mine looked like just before it was repaired btw there where no symptoms or warnings. Just low coolant and the sludge. This may be a big issue because believe it or not the coolant mixed with my engine oil contaminating my whole system probably causing irreversible damage. I ended up having to get the lower intake gasket fixed , coolant flushed and engine flushed. Worth checking out believe me. In the picture that's my main pully and just above the gunk is the water pump this more less a straight shot of the engine. Jared-
Attached Thumbnails
Click image for larger version

Name:	image-967078665.jpg
Views:	51
Size:	218.5 KB
ID:	113611  
JkJared is offline   Quote Quick Reply
Old 04-13-2012, 07:57 PM   #26
Jeeper
 
aelwero's Avatar
 
Join Date: Jul 2010
Location: Fort Bliss TX
Posts: 1,670
Images: 1
Quote:
Originally Posted by gohard View Post
I had my 3.8 engine changed recently by the dealer .
it is very normal for coolant to "disappear" after an engine change for a while There are a ton of places for air bubbles to hide out inside the block and they will work themselves out over a time and be displaced by coolant in the surge tank, causing the level to go down.

Just keep an eye on it and feed it when it's hungry, eventually it'll stop on it's own unless you have an issue.

If it's leaking internally, your exhaust will be white and smell sweet, like it's burning cookies or caramel
__________________
'71 DJ-5 (that isn't a typo)
'10 JKU Sport RHD

RHD... it's a jeep thing
aelwero is offline   Quote Quick Reply
Old 04-13-2012, 11:26 PM   #27
Jeeper
 
wrangler0's Avatar
 
Join Date: Jan 2010
Location: NY
Posts: 827
Quote:
Originally Posted by JkJared View Post
Cold engine= full/Max line. Hot engine= inch or two lower. Your coolant level will fluctuate up and down that's normal. Check after the jeeps sat all night as it will all drain out of the cooling system back into the bottle. Also I had low coolant and it ended up being a leaking intake manifold gasket and the coolant was seeping out near the water pump area. Check for any darkish resin or goo in around the intake or engine. Check hoses and your rad. I'll attach a picture of what mine looked like just before it was repaired btw there where no symptoms or warnings. Just low coolant and the sludge. This may be a big issue because believe it or not the coolant mixed with my engine oil contaminating my whole system probably causing irreversible damage. I ended up having to get the lower intake gasket fixed , coolant flushed and engine flushed. Worth checking out believe me. In the picture that's my main pully and just above the gunk is the water pump this more less a straight shot of the engine. Jared-
I fear I may have an issue like yours....
I checked my engine a little while ago, and it looks as if I have a stain on it similar to the one in your photo, just in a different location....still on the top part of the engine.
For all i know it's a stain from when oil was put in during the last change (I didn't do it myself as the dealer offered me a free oil change for having to wait HOURS for warranty work to be done)

Fingers x'd....
I guess asking a dumb question can sometimes lead to some very helpful info!

Thanks Jared!!
__________________
2010 Black Sahara
Rugged Ridge XHD Front & Rear Bumper, Rugged Ridge Side Armor
wrangler0 is offline   Quote Quick Reply
Old 04-14-2012, 12:51 AM   #28
Jeeper
 
JkJared's Avatar
 
Join Date: Mar 2011
Posts: 331
Quote:
Originally Posted by wrangler0

I fear I may have an issue like yours....
I checked my engine a little while ago, and it looks as if I have a stain on it similar to the one in your photo, just in a different location....still on the top part of the engine.
For all i know it's a stain from when oil was put in during the last change (I didn't do it myself as the dealer offered me a free oil change for having to wait HOURS for warranty work to be done)

Fingers x'd....
I guess asking a dumb question can sometimes lead to some very helpful info!

Thanks Jared!!
Yeah no problem man better safe than sorry. You should get that checked out at the dealer and make sure you ask them about a leaking gasket it's more common than you think. I had mine in for service completely unrelated to the gasket twice once for an oil change and once for an axle seal repair. Both times they didn't catch the leak even though I knew it was there and figured it was either oil or carbon build up but i was wrong. The techs in some dealers like the one I don't go to anymore for obvious reasons just don't care.. To not notice that is neglectful and lazy and any good mechanic could spot that a mile away. Be pro active and ask questions just like your doing and you'll be all gravy. Jared-
JkJared is offline   Quote Quick Reply
Old 06-20-2012, 07:57 PM   #29
Jeeper
 
mgola27's Avatar
 
Join Date: Jul 2010
Posts: 535
Quote:
Originally Posted by JkJared View Post
Cold engine= full/Max line. Hot engine= inch or two lower. Your coolant level will fluctuate up and down that's normal. Check after the jeeps sat all night as it will all drain out of the cooling system back into the bottle. Also I had low coolant and it ended up being a leaking intake manifold gasket and the coolant was seeping out near the water pump area. Check for any darkish resin or goo in around the intake or engine. Check hoses and your rad. I'll attach a picture of what mine looked like just before it was repaired btw there where no symptoms or warnings. Just low coolant and the sludge. This may be a big issue because believe it or not the coolant mixed with my engine oil contaminating my whole system probably causing irreversible damage. I ended up having to get the lower intake gasket fixed , coolant flushed and engine flushed. Worth checking out believe me. In the picture that's my main pully and just above the gunk is the water pump this more less a straight shot of the engine. Jared-

Glad I found this thread... I noticed my coolant level was slightly below the "min" level on the reservoir just last week. I also noticed the stain you posted, but didn't initially think they were related.

Not so sure now.

I did a search to find out what kind of coolant you guys were running... Mopar or something else, and found this thread.

I'm calling the dealer tomorrow to see if they can get me in soon. My 3/36,000 will be up in August, so I want this taken care of before then.

Yipee.

Thanks.

mgola27 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:13 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC