MAF sensor connector missing?
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Cadillac Seville / Cadillac Eldorado Forum Discussion, MAF sensor connector missing? in Past Cadillac Vehicle Discussion; I have just started the Head Gasket repair on my 2000 STS. I bought this car knowing it needed HG, ...
  1. #1
    eyewonder is offline Cadillac Owners Fanatic
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    MAF sensor connector missing?

    I have just started the Head Gasket repair on my 2000 STS. I bought this car knowing it needed HG, so I have only driven it around the block, so to speak. Thus, not very much data on how it used to run. Also, this is my first experience owning/working on any Cadillac.

    Following the FSM procedure, I got to taking off the air cleaner, and it said to disconnect the connector to the MAF/IAT. Not a problem, as it was already disconnected. The problem was that I can NOT find the connector that should have been plugged into the MAF. The MAF had these numbers on it: 1174512 & 25168491. The connector in the MAF has 5 male pins.

    When taking out the PCM I found an unconnected plug laying beside the PCM, and had been routed there on purpose. This connector was purple in color, and was a 10-pin double row connector. The connector outline definitely did not match that on the MAF.

    So, where is my MAF connector hiding?

    Ideas are welcomed.

    Cheers,
    Steve

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: MAF sensor connector missing?

    Take a look at this picture - the MAF pigtail is probably shoved down under the air filter box. The purple 10-pin connector is a mystery.

    You're going to be a lot better off - information wise, if you ask this Forum's Moderator to move this to Seville or Northstar Performance.

  4. #3
    eyewonder is offline Cadillac Owners Fanatic
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    Re: MAF sensor connector missing?

    Sub,

    Moving the post sounds like a good idea, except .... I don't know how to request a move. I scanned most of the page, and didn't see anything that looked like 'contact administrator', or something like that.

    I'm still learning my way around this forum, so some spoon-feeding is sometimes necessary.

    Thanks,
    Steve

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: MAF sensor connector missing?

    Quote Originally Posted by eyewonder View Post
    Moving the post sounds like a good idea, except .... I don't know how to request a move. I scanned most of the page, and didn't see anything that looked like 'contact administrator', or something like that.
    I started the ball rolling - A Moderator only works in his/her specific area of knowledge, Super Moderators frequent very active Forums, and Administrators keep an eye on us all (When they're awake).

    This thread may go up to either Seville or Northstar Performance, but a thread redirect will sit here for a period of time in order not to lose your "connection" with other posters.

  6. #5
    JimmyH is offline Cadillac Owners 10000+ Posts
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    Re: MAF sensor connector missing?

    moved from electrical

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    Ranger's Avatar
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    Re: MAF sensor connector missing?

    Can't imagine why someone would disconnect the MAF sensor, but I agree with Sub. Look under the air filter housing. You are bound to find it since you are going to drop the drivetrain to do the HG's.

  8. #7
    eyewonder is offline Cadillac Owners Fanatic
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    Re: MAF sensor connector missing?

    I looked under the air cleaner last night & didn't see anything. Also followed the wire bundles that I could see, looking for any cut off wires, but didn't find any.

    And yes, I should eventually find it. I hope.

    Cheers,
    Steve

  9. #8
    eyewonder is offline Cadillac Owners Fanatic
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    Re: MAF sensor connector missing?

    Found it!

    Well, actually I had it all along. The inspector (me) mis-identified the connector as a 10-pin dual row, when it had only one row that it used. And it plugged into the MAF & locked in place, so I am now comfortable that it is the right connector.

    But that leaves the reason for the INTENTIONAL disconnection open to speculation. Perhaps it was disconnected to stop it from throwing error codes.

    Just one more thing I'll have to deal with along the way.


    Cheers,
    Steve

  10. #9
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Quote Originally Posted by eyewonder
    But that leaves the reason for the INTENTIONAL disconnection open to speculation. Perhaps it was disconnected to stop it from throwing error codes.
    I'd imagine it was just left disconnected after something was serviced.

    On my '01, a "mechanic" damaged the wiring to my MAF when changing my water pump. The car would actually run ONLY with the MAF unplugged. Perhaps a SEVERELY faulty MAF would cause the same no run condition (?) and it was disconnected intentionally.

  11. #10
    maeng9981's Avatar
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    Re: MAF sensor connector missing?

    Quote Originally Posted by eyewonder View Post
    When taking out the PCM I found an unconnected plug laying beside the PCM, and had been routed there on purpose. This connector was purple in color, and was a 10-pin double row connector. The connector outline definitely did not match that on the MAF.
    That's the MAF connector. It looks like 10 pin but the top ones aren't used.

    EDIT #1: Oops, you already found it.

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