Radiator fans not spinning/AC Issue on 97 DeVille - Page 2
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Radiator fans not spinning/AC Issue on 97 DeVille in Past Cadillac Vehicle Discussion; That ain't good. I'd suspect a bad Schrader valve. The cap has an O ring in it also....
  1. #16
    rodnok01's Avatar
    rodnok01 is offline Cadillac Owners Connoisseur
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    That ain't good. I'd suspect a bad Schrader valve. The cap has an O ring in it also.

  2. #17
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Quote Originally Posted by rodnok01 View Post
    That ain't good. I'd suspect a bad Schrader valve. The cap has an O ring in it also.
    This thing?

  3. #18
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    Might just be loose.. do you have a valve core tool?
    If it's tight already easy enough to change and cost 2-5 bucks at local parts place.
    Sometimes they get a piece of dirt in them, if you take a small screwdriver and give it a quick push/release it might stop leaking. If you do change it system will need to be vac down and refilled to do it properly and you'll need a set of gauges. Those cheapo can gauges just get you in trouble.

  4. #19
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Quote Originally Posted by rodnok01 View Post
    Might just be loose.. do you have a valve core tool?
    If it's tight already easy enough to change and cost 2-5 bucks at local parts place.
    Sometimes they get a piece of dirt in them, if you take a small screwdriver and give it a quick push/release it might stop leaking. If you do change it system will need to be vac down and refilled to do it properly and you'll need a set of gauges. Those cheapo can gauges just get you in trouble.
    I believe my dad has one of those in his toolbox, where is it located? Is it the valve that I put the refrigerant into?

  5. #20
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    If that's the valve spewing freon out then yes, the low side port.
    Please do no breathe the freon or get your hand frostbit if you change it out.

  6. #21
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Well I think I've found a problem, I've had this can of A/C Pro for awhile now and I believe it's "broken", because it will not connect to any of our other vehicles. We're gonna go run and get another bottle and see if that will connect to the car this time. Quick questions before I go: Should I only put refrigerant in while the compressor is on? (Since it turns on for brief moments and shuts right off). I know the engine needs to be run and you should have the A/C at Max. But, since it's turning on and off I am guessing I should only put it in while it turns on for those brief moments. Correct me if I'm wrong!

  7. #22
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Yes, you must have the A/C (compressor) on for the compressor to draw in the refrigerant, BUT you should not simply add a can. You really need a "set" of A/C gauges to see the low and high pressure readings. You might need a full can or you might only need a half of a can. If it's leaking from the service port, it's really irrelevant. It's gonna leak out anyway. That said, if it is leaking like you said, I am surprised you have any refrigerant left at all and that the compressor is not completely disabled.

  8. #23
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    Don't think it will matter either way.
    I good set of gauges and can tap are only about 60 bucks online.

  9. #24
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    The AC Compressor and cooling fans are a circuit

    I have found that if the compressor OR fans are cut from the circuit, neither will operate

    Not sure about when the AC is in the off position tho... Never run mine without AC until the past few days when the fans failed... They were off and on for like a day and now nothing... Like the AC, Nothing

    I have a burnt plug but Was thinking a relay too...

    Jus throwing out my similar experience with this issue

    Who knows, maybe will help u look at things ?

  10. #25
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Picked up some refrigerant, tried the old AC Pro on my dads Tahoe and it snapped on right away. I picked up this EzChill stuff that came with a bunch of adapters. Maybe one of those will fit it for my coolant?

  11. #26
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    Adapters? Did you buy a retrofit kit?

  12. #27
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Quote Originally Posted by MoistCabbage View Post
    Adapters? Did you buy a retrofit kit?
    Indeed I did.

  13. #28
    Jfarr is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Might be advantageous to pull the orifice tube before charging. Mine was clogged with metal shards.

  14. #29
    AlcoholicProgram is offline Cadillac Owners Member
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    Re: Radiator fans not spinning/AC Issue on 97 DeVille

    Quote Originally Posted by Jfarr View Post
    Might be advantageous to pull the orifice tube before charging. Mine was clogged with metal shards.
    Where is the orifice tube located?

  15. #30
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    Top line near firewall, you'll see a connection. If you change make sure to put in correct way.

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