Coolant Problem - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Coolant Problem

TeraFlex Now at Rockridge 4WD! BEST DEALS around!Alloy usa heavy duty ball joint kitsENGO QUADLUX 6" to 54" LED AMBER AND WHITE MULTI

Reply
Unread 11-29-2011, 08:57 AM   #1
leblanj
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Greer, SC
Posts: 7
Coolant Problem

Just rebuilt everything for my 88 wrangler 4.2 258. It ran great for about 550 miles after rebuild, then the water pump started to leak. I changed the water pump and now the coolant is filling into the overflow tank and spraying all over the engine compartment after driving a mile or so down the road. All the hoses are connected correctly. I just changed the head gasket and test drove it again and I will get a mile down the road and the same problem will occur. It will not happen when it is idling in the driveway. This is our only problem with the jeep and we are out of ideas on what to try next.

leblanj is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 09:07 AM   #2
jbolty
Moderator
 
jbolty's Avatar
1990 YJ Wrangler 
 
Join Date: Jun 2007
Location: San Diego, CA
Posts: 15,880
Is it v belt, or serp? If serp, you may have gotten the wrong rotation water pump.

The cap should hold pressure up to about 15 psi before releasing water to the overflow.
__________________
.
"The right to be heard does not necessarily include the right to be taken seriously." —Hubert Humphrey
.
If you live within wheeling distance of San Diego county, click here
jbolty is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 09:17 AM   #3
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,094
Cracked head or block. Did you bore the cylinders oversize?
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 09:32 AM   #4
leblanj
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Greer, SC
Posts: 7
It is a v belt. Radiator is new along with the cap.
leblanj is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 09:35 AM   #5
leblanj
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Greer, SC
Posts: 7
Had to bore the cylinders .30, we lost compression earlier this year and thats why we rebuilt the motor.
leblanj is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 09:53 AM   #6
Cooter92YJ
Member
1992 YJ Wrangler 
 
Join Date: Aug 2008
Location: North Central Wa
Posts: 306
It's got to have something to do with the new water pump, whether like J-Bolty said wrong rotation or just plain the wrong one. Didn't do it before the new one, right?
Cooter92YJ is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 10:01 AM   #7
leblanj
Registered User
1988 YJ Wrangler 
 
Join Date: Nov 2011
Location: Greer, SC
Posts: 7
Same water pump by part number and this issue has never occurred before.
leblanj is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 10:02 AM   #8
moonshinefuel
Registered User
1995 YJ Wrangler 
 
Join Date: Feb 2009
Location: Los Angeles. California. United States.
Posts: 4,911
Maybe the thermostat is not opening.
__________________
AX5/NV3550 Conversion Thread. http://www.jeepforum.com/forum/f12/n...irrels-752742/
Bow Hunting www.bowsite.com
moonshinefuel is offline   Reply With Quote Quick reply to this message
Unread 11-29-2011, 11:26 AM   #9
hotelconucc93
Senior Member
 
hotelconucc93's Avatar
2010 YJ Wrangler 
 
Join Date: Jun 2008
Location: Chesterfield, VA, VA
Posts: 753
To see it happen, you might have to idle it in the drive......but...make it happen. Work the throttle and rev it to 2000 and hold it while you watch.
__________________
Axles and bolts and springs....Oh My!

My Build Thread --->>> http://www.jeepforum.com/forum/f12/t...ilding-869713/

Not my write up, but now one of my jeeps losing a BA and gaining an AX-> http://www.jeepforum.com/forum/f19/y...ite-up-312203/
hotelconucc93 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.