Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Consolidated: Vanagon Coolant Lessons Learned
Forum Index -> Vanagon Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
kjono09
Samba Member


Joined: April 03, 2014
Posts: 178
Location: Seattle, WA
kjono09 is offline 

PostPosted: Thu Jun 04, 2015 12:01 pm    Post subject: Consolidated: Vanagon Coolant Lessons Learned Reply with quote

Thought it would be nice to have a "Consolidated: Vanagon Coolant Lessons Learned" thread for quick trouble shooting of coolant issues. This will payback to the community and ease future headache on this issue.

Please briefly add to this thread your experience, i.e.

CAUSE:
SYMPTOM(S):
SOLUTION:
_________________
84 Retro-Westy GW 2.2L (Vincent)
67 Bug 2007cc (WBX in progress) (Davey)

Submariner
Back to top
View user's profile Send private message Gallery Classifieds Feedback
dobryan
Samba Member


Joined: March 24, 2006
Posts: 11053
Location: Brookeville, MD
dobryan is offline 

PostPosted: Thu Jun 04, 2015 12:03 pm    Post subject: Reply with quote

The most excellent FAQ section has this pretty well organized under the 'Engine Cooling' section.

http://www.thesamba.com/vw/forum/viewtopic.php?p=6236044#6236044

Very Happy
_________________
Dave O
'87 Westy w/ 2002 Subaru EJ25 and Peloquin TBD

"To travel hopefully is a better thing than to arrive." Robert Louis Stevenson

Join the Vanagon Rescue Squad on the VanAlert app.
http://vanalert.com/

MD>Canada>AK>WA>OR>CA>AZ>UT>WY>SD
https://www.thesamba.com/vw/forum/viewtopic.php?t=620646

Building a bus for travel in Europe
https://www.thesamba.com/vw/forum/viewtopic.php?t=695371
Back to top
View user's profile Send private message Gallery Classifieds Feedback
kjono09
Samba Member


Joined: April 03, 2014
Posts: 178
Location: Seattle, WA
kjono09 is offline 

PostPosted: Thu Jun 04, 2015 12:05 pm    Post subject: Reply with quote

CAUSE: Air Trapped in Radiator, not front heater core.

SYMPTOM(S):
1.) When at highway speeds, high RPMs, or when thermostat was open and using radiator heavily can started to very, very quickly overheat.

2.) Turning of engine or lowering rpm/load dropped heat quickly.

3.) Engine never overheated during around town driving in Monterrey, where it is pretty flat and cool.

SOLUTION:
1.) Through various PITA methods bleed the system.
A.) I filled system with nose of van up hill and radiator bleeder open. I ran the van on high RPM to drop level in fill tank inorder to add more coolant.
B.) I drove down hill with radiator bleeder valve slightly cracked and rear engine bleeder open.
c.) repeat, till air out of system, have all heater on full blast.
_________________
84 Retro-Westy GW 2.2L (Vincent)
67 Bug 2007cc (WBX in progress) (Davey)

Submariner
Back to top
View user's profile Send private message Gallery Classifieds Feedback
kamzcab86
Samba Moderator


Joined: July 26, 2008
Posts: 6518
Location: Arizona
kamzcab86 is offline 

PostPosted: Thu Jun 04, 2015 1:13 pm    Post subject: Reply with quote

SYMPTOM(S): Fan turned on high while freeway driving (2 miles from home so no overheat or flashing light). Parked in street while unloading... lake's worth of coolant drained onto pavement. Mad

CAUSE: Dead water pump.

SOLUTION: Replaced water pump (along with a slew of hoses while the system was drained)... good for a few new curse words.

-----------------------------

SYMPTOM(S): Constantly topping off coolant. Finally saw a small wet spot under the left side of the van. Eh?

CAUSE: Leaky rear heater.

SOLUTION: Ripped the rear heater out and replaced the T-fittings with straight fittings. (Desert dweller who doesn't generally camp/travel in frigid conditions and never used the rear heater; prefer having the storage space... rear heater removal is not for everyone.)

-----------------------------

SYMPTOM(S): Pulled into a parking lot, got out and saw coolant pouring onto the pavement. Rolling Eyes Pulled the lid to find...

CAUSE: Cracked coolant tank (relatively new one at that).

SOLUTION: Replaced coolant tank (for the second time).

dobryan wrote:
The most excellent FAQ section has this pretty well organized under the 'Engine Cooling' section.

http://www.thesamba.com/vw/forum/viewtopic.php?p=6236044#6236044

Very Happy


It doesn't have a whole slew of problems listed, however. Will add this topic into that section. Cool
_________________
~Kamz Anxious
1986 Cabriolet: www.Cabby-Info.com
Blue Vanagon 1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"I fear the day that technology will surpass our human interaction; the world will have a generation of idiots." ~Albert Einstein
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
t3 kopf
Samba Member


Joined: October 22, 2012
Posts: 984
Location: Currently about 7000 miles away from my Van
t3 kopf is offline 

PostPosted: Thu Jun 04, 2015 6:19 pm    Post subject: Reply with quote

Symptom: After replacing all heater hoses from engine to front, and relocating the (new) meyle front heater valve to the cab directly under the heater core, found coolant dripping in the driveway from the passenger side door step area an hour after the first drive around town. Further investigation revealed the passenger side floor mat was saturated with coolant.

Cause: Brand new meyle heater valve leaking already. Confused

Solution: Replaced with a 15 dollar ford heater valve in the same place. Dry as a bone still months later. Cool
_________________
'90 Carat w/ '95 phase 1 EJ22 OBD2 conversion
Back to top
View user's profile Send private message Gallery Classifieds Feedback
volkswagenguru
Samba Member


Joined: June 07, 2007
Posts: 149
Location: St.Catharines, On Canada
volkswagenguru is offline 

PostPosted: Thu Jun 04, 2015 9:40 pm    Post subject: Reply with quote

Symtom: Pull into doctors office to see all coolant leaking out.
Cause: blown coolant hose from thermostat to distribution tower
Solution: replaced hose.

Symtom: driving down the highway start to see small puffs of smoke next thing you know a smoke screen James Bond would be proud of.
Cause: Blown waterpump
Solution: new waterpump

Symtom: coolant overflow out of the overflow bottle only after driving in on the highway.
Causes: Bad pressure cap and blown headgasket.
Solution: replaced headgaskets on both heads new pressure cap thermostat.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
vegpedlr
Samba Member


Joined: June 07, 2014
Posts: 665
Location: TBD
vegpedlr is offline 

PostPosted: Thu Jun 04, 2015 9:52 pm    Post subject: Reply with quote

Symptom(s):
Playing whack-a-mole with leaks: radiator hose clamp X2, fan switch, bleeder valve plug X2
Cause: Leaky head gasket allowed combustion gases into cooling system, over pressurizing the cooling system just looking for a weak spot...
Solution:
Head gaskets replaced and resealed
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Vanagon Nut
Samba Member


Joined: February 08, 2008
Posts: 8212
Location: Sunshine Coast B.C.
Vanagon Nut is offline 

PostPosted: Thu Jun 04, 2015 10:41 pm    Post subject: Reply with quote

replaced ~ 90% of cooling system on an '88 WBX.

symptom: coolant loss but mostly at sustained highway speeds.

two causes:

failing O ring at coolant level sensor
failing O ring at rear heater valve.

Cause to former: aside from time, unknown.
cause to latter: during new heater hose install, wrestled hose onto upper nipple at heater. This may have hastened failure of O ring at valve. Fasteners at valve to core were not tight.

Of note, coolant loss at expansion bottle (level sensor O ring) was somewhat insidious. At times, coolant evaporated at bottle recess area before it would drip down.
_________________
1981 Westy air cooled to 15 ABA swap: http://tinyurl.com/y9n4xob8

50 ABA Swap in to '88 Westy: http://tinyurl.com/yap5hpwt

Vanagon VAG GAS engine swap Google Group:
https://tinyurl.com/2f24rmh

VE7TBN
Back to top
View user's profile Send private message Gallery Classifieds Feedback
avernon82
Samba Member


Joined: July 07, 2015
Posts: 291
Location: Richmond,CA
avernon82 is offline 

PostPosted: Thu Jan 14, 2016 4:38 pm    Post subject: Re: Consolidated: Vanagon Coolant Lessons Learned Reply with quote

Question:

SYMPTOM: Coolant level in pressure bottle is very high after driving
CAUSE: bad cap?
SOLUTION: replace cap?
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Terry Kay
Banned


Joined: June 22, 2003
Posts: 13331

Terry Kay is offline 

PostPosted: Thu Jan 14, 2016 5:41 pm    Post subject: Re: Consolidated: Vanagon Coolant Lessons Learned Reply with quote

Symptom ;
Can't identify anything behind the van while driving on expressway at 70 mph, large cloud of white steam permeating from rear of van.

Cause;
Obvious leak /hole on outside coolant pipe behind R/H rear wheel.

Cure;
Stop on shoulder, loosen expansion tank cap, get the van to friends house, replace lost coolant with water, drive back to work, manufacture stainless coolant pipes out of 1.25" Caterpillar D-8 hydraulic tubing, drive back home with a tight system.

( Note; This was the first set of replacement stainless replacement pipes ever made for a Vanagon)
_________________
T.K.
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Vanagon All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2018, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB