Jump to content
CaddyInfo Cadillac Forum

Coolant Leak???


Recommended Posts

I had a small drip of coolant the other day from driver side valence. I figured it was the water pump seal going and fished a SEESNAKE up in there to check before I started tearing into it. The inside of the volute is copletely dry around the shaft seal, and the coolant is leaking from the plate that bolts to the pump housing. I'm not sure if this is the suction plate or what? there's a ~2" hose leaving it going back towards the firewall. I couldn't find anything relating to this during a search and was wondering what plan of attack i should take.

Should I add some sealing pellets to the coolant, operate the engine, and then replace the coolant. Or replace coolant and add the sealing tablets. Its due for a coolant change anyways. I'm hoping this may seal wherever the gasket is leaking and prevent changing the pump out.

If the leak stop idea dosen't work then i'll look into a new gasket, and more than likely change the pump while I'm at it(with my luck it'll start leaking next month or two)

Thanks for any insight

Link to comment
Share on other sites


I think you are mistaken in your description. You say, there is a 2" hose going back toward the firewall?, If you are talking about the water pump cover there are two hoses a 2" hose that goes to the upper radiator connection and a 5/8 - 3/4" by-pass hose that goes back toward the firewall and attaches to the heater pipes that traverse the rear of the engine..

If your water pump cover is leaking, you need to replace the seal. The seal has been redesigned and if you don't have the new cover yet, you will need to buy a new cover to use the redesigned seal

Here is a photo of the old and new covers

WaterPumpenginemount25.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Link to comment
Share on other sites

I just got done reading your post from all the maintenance you performed a couple years ago. Maybe i missed the 5/8" hose with the seesnake. I guess the pump will be coming out, makes sense to replace it while I'm in there anyways right? Started my 2 week vacation today, looks like I will be adjusting my current work plan of painting the house, trimming out new windows, and consuming large qautities of fermeted beverages. Oh wait I can perform the last one, just with grease/grime on my hands instead of paint and sawdust all over my hands.

Link to comment
Share on other sites

I just got done reading your post from all the maintenance you performed a couple years ago. Maybe i missed the 5/8" hose with the seesnake. I guess the pump will be coming out, makes sense to replace it while I'm in there anyways right? Started my 2 week vacation today, looks like I will be adjusting my current work plan of painting the house, trimming out new windows, and consuming large qautities of fermeted beverages. Oh wait I can perform the last one, just with grease/grime on my hands instead of paint and sawdust all over my hands.

What is a see snake?

You dont need to replace the pump if its ok, just the cover and cover seal, if the cover is the old style

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Link to comment
Share on other sites

I just got done reading your post from all the maintenance you performed a couple years ago. Maybe i missed the 5/8" hose with the seesnake. I guess the pump will be coming out, makes sense to replace it while I'm in there anyways right? Started my 2 week vacation today, looks like I will be adjusting my current work plan of painting the house, trimming out new windows, and consuming large qautities of fermeted beverages. Oh wait I can perform the last one, just with grease/grime on my hands instead of paint and sawdust all over my hands.

What is a see snake?

You dont need to replace the pump if its ok, just the cover and cover seal, if the cover is the old style

It is a pretty neat gadget.

A flexible shaft with a camera on the end and a display screen you hold in your hand.

http://www.ridgid.com/seesnakemicro/

Posted Image
Link to comment
Share on other sites

Oh I understand now

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...