air filter in a 1999 Deville
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Northstar Engines and System Technical Discussion Discussion, air filter in a 1999 Deville in Cadillac Engine Technical Discussion; The air filter housing on my 1999 Deville has a sensor on it . Does that mean that the cars ...
  1. #1
    RRG
    RRG is offline Cadillac Owners Member
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    air filter in a 1999 Deville

    The air filter housing on my 1999 Deville has a sensor on it . Does that mean that the cars diognostic center will tell me when I should change the air filter ?
    If not , how often should it be changed ?
    Thanks
    RRG

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  3. #2
    Ranger's Avatar
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    Re: air filter in a 1999 Deville

    No, That is the IAT (intake air tempurature) sensor. Unlike the oil life monitor, it will not tell you when to change it.

  4. #3
    EcSTSatic's Avatar
    EcSTSatic is offline Cadillac Owners Connoisseur
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    Re: air filter in a 1999 Deville

    Depends on where you live. Dustier areas require changes sooner than others. Hold it to the light and see if any passes through. If it's dark, change it.

  5. #4
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: air filter in a 1999 Deville

    If in doubt change it, possibly a little more performance and gas mileage for a little money.

  6. #5
    mcowden is offline Cadillac Owners Connoisseur
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    Re: air filter in a 1999 Deville

    The manual says to change it every 30,000 miles in normal service or every 15,000 miles in dusty conditions. If you don't know how long it's been or if you just bought the car and the filter looks dirty, it's not a very expensive item to replace.

    I've read before that the various foam or gauze filters don't filter as well as paper filters. Seems feasible to me. There have been lots of arguments here about whether "high flow" air filters such as K & N, Fram Air Hog, Amsoil, etc. really have any benefits, and the general consensus is they don't help anything but the salesperson's retirement fund. There are lots of filters on the market. Probably any paper filter will work just fine.
    Mike

  7. #6
    RRG
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    Re: air filter in a 1999 Deville

    Thanks Guys
    I purchased a new K&N filter , but how do you open the filter housing ????
    After y`all stop laughing mayby someone will tell me the trick ....
    Thanks
    RRG

  8. #7
    Eldyfig's Avatar
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    Re: air filter in a 1999 Deville

    There should be two clips along the edge. One of the right side and one on the far edge (viewing from the fender side).

    Your K&N will be good enough for daily driving. Just think, you don't have to pay for anymore paper filters. It will pay for itself in a bit.

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    Ranger's Avatar
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    Re: air filter in a 1999 Deville

    Based on $6 for a paper filter changed at 30K, the $50 K & N will break even at 250K.

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    Re: air filter in a 1999 Deville

    Darn, when you think about it, that is right. Even if you change a paper filter every 15k it would still take 130k to make it up.

  11. #10
    EcSTSatic's Avatar
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    Re: air filter in a 1999 Deville

    You are assuming of course that there are no other benefits to a foam filter. But we've been down that road before.

  12. #11
    mcowden is offline Cadillac Owners Connoisseur
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    Re: air filter in a 1999 Deville

    Quote Originally Posted by Eldyfig
    Darn, when you think about it, that is right. Even if you change a paper filter every 15k it would still take 130k to make it up.
    Don't forget to add in the cost of the recharge kits plus added wear and tear from allowing extra dirt in the engine... What are the other benefits and performance gains? The sticker?
    Mike

  13. #12
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    LT5
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    Re: air filter in a 1999 Deville

    I've done the K&N thing on many car's. Bottom line is new K&N vs. stock paper filter. No h/p increase on a dyno.

    Story is just change the stock filter. The paper filter is cheaper and flow's just as well.

  14. #13
    Eldyfig's Avatar
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    Re: air filter in a 1999 Deville

    Quote Originally Posted by mcowden
    Don't forget to add in the cost of the recharge kits plus added wear and tear from allowing extra dirt in the engine... What are the other benefits and performance gains? The sticker?
    Oh, don't worry. I am not contesting anyone on this. If I knew better, 3 years ago, I never would have bought a K&N. I am pro-paper now.

  15. #14
    mcowden is offline Cadillac Owners Connoisseur
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    Re: air filter in a 1999 Deville

    Quote Originally Posted by Eldyfig
    Oh, don't worry. I am not contesting anyone on this. If I knew better, 3 years ago, I never would have bought a K&N. I am pro-paper now.
    No worries at all. I bought an Amsoil filter once. Even proudly displayed the Amsoil filter sticker on top of the air box. I won't make the foam filter mistake again either. Now I run a cheap paper filter and have zero complaints.
    Mike

  16. #15
    RRG
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    Re: air filter in a 1999 Deville

    K Guys , I get the message . I will return the K&N filter and get a cheap paper filter . I still cant open the Filter housing .....I think I need a suiside bomber to accomlpish that ....
    RRG

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