Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 1/2004 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Cooling Problem 900

posted by  red544 on  Mon May 30 13:06 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Working on a 1993 940 non turbo. Started out changing the water pump due to leakage in of the gasket. Noticed when installing the new anti freeze that the was a fair amount of air bubbles coming up in the over fill tank. Thought is was just air getting out of system. Filled to max level.
Problem is that is appears that I am getting excessive pressure in the tank. Looks like it is leaking at the seams, but only after running hard. With the "air" and the leak after running hard, is this looking like a head gasket problem?
Car runs great, no smoke but I thinking it could be a break letting pressure into the water jacket. If this is the case, has anyone used Moroso Ceramic Seal to fix the problem. I know if a head gasket is broken it should replaced, but I am trying the "easy" way out. Also the car is running at normal operating temperature, with no fast warm up or the needle going over the center mark.
Any input would be appreciated.

Neal








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Cooling Problem 900

    posted by  Volvodad on  Mon May 30 17:09 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Thu Oct 23 16:18 CST 2014
    [RELATED]

    Adding to Javalion's tips: get a cylinder compression check which is a good bet to ID a head gasket problem.
    --
    Bob (son's 81-244GL B21F, dtr's 83-244DL B23F, 'my' 94-944 B230FD; plus grocery-getter Dodge minivan, hobbycar 77 MGB, and a few old motorcycles)








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Cooling Problem 900

    uid 6573's pic
    posted by  javalion on  Mon May 30 16:54 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Jul 23 09:57 CST 2014
    [RELATED]

    It looks like it is a stop leak for cracks in castings.

    Per a website:
    “The best Chemical Sealer you can buy to stop cooling system leaks. Works equally well in aluminum or cast iron blocks. Cooling system must be thoroughly clean before use. Does not work with antifreeze. If this doesn't stop the leaks, find yourself a welder!” Another site” capable of sealing minor cracks”

    Does not work with antifreeze?

    The coolant reservoir tank like the radiator has a life of 10 years plus or minus. Make sure it’s not just a bad reservoir tank and a non working pressure cap. You can get the coolant checked for exhaust gas or pressure tested for loss of pressure. No easy fix if it’s a head gasket.
    --
    Tom F. Couple of Volvos Mods, RainX & cup holders.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.