Water Temp Light 472
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 7 of 7
500, 472, 425, 368 Discussion, Water Temp Light 472 in Cadillac Engine Technical Discussion; Ok I have a 1970 DeVille and for as long as I have owned the car when I pull the ...
  1. #1
    Islair's Avatar
    Islair is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Age
    39
    Posts
    24

    Water Temp Light 472

    Ok I have a 1970 DeVille and for as long as I have owned the car when I pull the key out of the ignition the "Engine Temp" light comes on until I get out and close the door. Well recently, on the hottest day of the year mind you, the "Water Temp" light came on. Now this was a new light for me so I pulled over and took a look, no steam, no leaking, no nothing. I waited a while and let the car cool down and drove her home. A week later I dropped her off at my mechanic and he ran some tests. He gave me a call later that day thinking that it is electrical. He ran it on an infared scope of some sort and said he could not get the thing to go over 193 in temp and the radiator was full and showing no signs of leaking. Ok cool I thought, I can deal with that.

    Well the problem is that the light never comes on when it is 85 or cooler and on drives less than 20 minutes or so. It only comes on when the day is over 90 and I start pulling some distance on the car. Just the other day it was 93 and the light came on. I was going to ignore the light, but when it was that hot out and im not use to seeing this light I had to pull over, I just couldnt risk it. Again, no leaking or steam or anything, but I pushed my ear close to the radiator and that thing was boiling like crazy. I had never heard it boil so loud.

    What do you think? Should I get a second opinion? Just replace the thermostat? Or should I get myself a gauge and see what happens with the temp when I can actually get a reading instead of a light that goes on or off?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
    Join Date
    Aug 2003
    Location
    Albuquerque, NM
    Age
    27
    Posts
    7,971

    Re: Water Temp Light 472

    Couldn't hurt get a gauge...

  4. #3
    Imprl59 is offline Cadillac Owners Fanatic
    Join Date
    Jan 2004
    Posts
    300

    Re: Water Temp Light 472

    The sensors can become inaccurate with age so you might try replacing the water temp sensor to see what happens. The gauge is really the best idea so that you will know exactly what is happening.

    Steve B.

  5. #4
    Islair's Avatar
    Islair is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Age
    39
    Posts
    24

    Re: Water Temp Light 472

    Spoke with the mechanic today and he thinks it is the temp sensors too. Where is the best place to get new ones?

  6. #5
    dragcaddy68's Avatar
    dragcaddy68 is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Location
    Harrisburg, PA
    Age
    39
    Posts
    5

    Re: Water Temp Light 472

    You might be able to get a stock sensor from Autozone/Advance/pick your chain store.
    If not a Caddy dealership parts dept. should be able to hook you up.

    An Autometer gage comes with new sender and will screw in place of your sensor at the front of the block. You can even use the stock wire if you want, just pull the dash pad up and unhook the wire that goes to the temp gage on your dash bezel, and connect it to the gage. No messy wiring that way. About $45-50 for a decent gage.

    The Engine Temp idiot light is connected to the back of the pass. side head. It is also connected in line with a bunch of other stuff, including the door "open" switches and courtesy lights. Mine also lights this light when the passenger side door is open, I just leave it alone.

  7. #6
    Islair's Avatar
    Islair is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Age
    39
    Posts
    24

    Re: Water Temp Light 472

    Cool. Thanks again for all the help.

  8. #7
    Islair's Avatar
    Islair is offline Cadillac Owners Member
    Join Date
    Jul 2005
    Age
    39
    Posts
    24

    Re: Water Temp Light 472

    Replaced the sensor, replaced the thermostat, and just for kicks flushed the system. I have owned her for 5 years now, so it seemed about time. Weather has been in the 90's and I have been logging miles, I havent seen that light again. Thanks again everyone for the suggestions.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

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.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting