A/C Problem question - Page 2
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
Page 2 of 3 FirstFirst 1 2 3 LastLast
Results 16 to 30 of 39
Like Tree3Likes
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, A/C Problem question in Past Cadillac Vehicle Discussion; Originally Posted by alfarop1999 do i have to empyt out the coolant before removing the purge line to maintenance? it ...
  1. #16
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
    Join Date
    Feb 2004
    Location
    Minnesota
    Age
    63
    Posts
    10,085

    Re: A/C Problem question

    Quote Originally Posted by alfarop1999 View Post
    do i have to empyt out the coolant before removing the purge line to maintenance? it
    ----------------------
    no - the PURGE LINE is the only way of expelling air from the Northstar cooling system -

    it is a 3/8 diameter hose that goes from a hollow bolt in the thermostat/waterpump housing area of the engine - and plugs onto a nipple on the side of the SERGE TANK -

    with the engine running - there should be a gentle - constant flow of coolant - from the engine - to the serge tank -

    if there is no flow - the most likely cause is a blockage in the hollow bolt -

    follow the hose towards the engine - with the engine OFF - remove the hose - use a straightened metal coat hanger - or something similar - and poke it into the hollow bolt -

    the coat hanger should go in about 2 1/2 inches -

    once the hollow bolt is cleared - you can briefly start the engine to verify coolant flow - be sure to use some sort of container to catch the coolant so you don't make a mess -

    check the hose and serge tank for blockage -
    alfarop1999 likes this.

  2. #17
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    my purgeline seems to flow... I was told using straight coolant and not 50/50 could cause a car to overheat, is this true?

  3. #18
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
    Automobile(s): Crimson 2001 Seville STS, 1990 Seville (RIP)
    Join Date
    Sep 2010
    Location
    East Boston MA.
    Age
    26
    Posts
    21,940
    Coolant is not as effective as transferring heat as water, that's why we use 50%/50%.

    Coolant lowers the freezing point, increases the boiling point, inhibits corrosion, and lubricates.

  4. #19
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    73,861

    Re: A/C Problem question

    Yes. Or at least it will run hotter (and 100% coolant will freeze at a higher temperature). Straight coolant is not a good idea. You should never run higher than 70%. 50/50 is good to about -35F.

  5. #20
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    wow ive been using straight this whole time, but still seems to be low on coolant. ill go get 50/50 and pour the rest of that to top it off...

    ----------

    Quote Originally Posted by alfarop1999 View Post
    wow ive been using straight this whole time, but still seems to be low on coolant. ill go get 50/50 and pour the rest of that to top it off...
    or maby i should flush it out because i already put about a gallon and 1/2 in there.. but low coolant message came out again.

  6. #21
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
    Automobile(s): Crimson 2001 Seville STS, 1990 Seville (RIP)
    Join Date
    Sep 2010
    Location
    East Boston MA.
    Age
    26
    Posts
    21,940
    You need to drain and refill. You won't get all of the coolant out of the system, so you'll have to add slightly more water than coolant to get it to 50%/50%.

  7. #22
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    i stuck a water hose in the surge tank and turned it on while it was draining and turnd on the heat inside the car.. waited till i saw nothing but water come out and now just waiting for all the water to drain out too... i wonder if orileys would let me return a 75% full coolant i had just bought. it doesnt work its defected...

  8. #23
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
    Automobile(s): Crimson 2001 Seville STS, 1990 Seville (RIP)
    Join Date
    Sep 2010
    Location
    East Boston MA.
    Age
    26
    Posts
    21,940
    No need to turn the heat on, the heater core is full flow at all times. Now you'll have just water left in the system after you drain it, so you'll have to add slightly more coolant to the system than water.

    .....The coolant was not defective. Or was that a joke?

  9. #24
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    Quote Originally Posted by MoistCabbage View Post
    No need to turn the heat on, the heater core is full flow at all times. Now you'll have just water left in the system after you drain it, so you'll have to add slightly more coolant to the system than water.

    .....The coolant was not defective. Or was that a joke?
    it was a joke brother..
    and by the way i put in the 50/50 coolant and the car sucked it up but after i turnd off the heater it starting filling up and bubbiling the surge tank pretty bad... if im not mistake it seem as it was clogged through the hose that is going towards the passanger to the drivers side. and after it stoppd bubbling it went back down meaning i have to add more coolant again.

  10. #25
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
    Join Date
    Feb 2004
    Location
    Minnesota
    Age
    63
    Posts
    10,085

    Re: A/C Problem question

    Quote Originally Posted by alfarop1999 View Post
    it was a joke brother..
    and by the way i put in the 50/50 coolant and the car sucked it up but after i turnd off the heater it starting filling up and bubbiling the surge tank pretty bad... if im not mistake it seem as it was clogged through the hose that is going towards the passanger to the drivers side. and after it stoppd bubbling it went back down meaning i have to add more coolant again.
    -------------------------
    read #16 again -

    coolant/air flow FROM the engine - TO the serge tank -

  11. #26
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    i ment to say the hose going behind the rear cassette seem clogged cuz the coolant came back up from it and then went down...

  12. #27
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
    Automobile(s): 89 Coupe DeVille, 95 Sedan DeVille, 03 SLS, two 02 DHS's
    Join Date
    Feb 2004
    Location
    Minnesota
    Age
    63
    Posts
    10,085

    Re: A/C Problem question

    .........

  13. #28
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    73,861

    Re: A/C Problem question

    Quote Originally Posted by alfarop1999 View Post
    wow ive been using straight this whole time, but still seems to be low on coolant. ill go get 50/50 and pour the rest of that to top it off...
    Just take what you have left and put half of it in an empty milk jug. Add an equal amount of distilled water to each one. Now you have 2 jugs of premixed 50/50.

  14. #29
    alfarop1999 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Jan 2013
    Age
    24
    Posts
    46

    Re: A/C Problem question

    what do u think of mixing yellow prestone 50/50 with orange preston dex cool coolant?

  15. #30
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    73,861

    Re: A/C Problem question

    I suppose they are probably compatible and if so, it should state that on the jug somewhere. I'm pretty sure they are as most people are not dedicated to any one coolant so every time they change coolant with a different brand or have it done by a different shop or their shop switched brands, they are mixing. If they where not compatible, there would be a LOT of problems. I'd put that in the same category as mixing brands of gas, oil or trans fluid.

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