Question about 1990 Cadillac Fleetwood

3 Answers

AC air blowing only at the feet...no air on top. Panel on this vehicle does not have a selection buttom to direct air to top. Mechanic says it work with vaccum.

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  • elismcruz May 02, 2010

    Thank you....what I need to know is how can I fix this problem...without taking it to a mechanic..

    we already got ridoff by one of those not too honest individual out there. What part do I need to replace to fix the problem...



    thanks

  • elismcruz May 02, 2010

    You provided me with a diagram of the AC system. What I need is How can I solve my problem...and get AC air blowing to the dash
    panel outlets..please let me know what can I do, without having to take it to a mechanic. We already got ridoff by a dishonest one.

    thanks

  • elismcruz May 03, 2010

    I do not accept your solution...and made the other "or" answer. I have asked two following

    question and none have been answered. Please review my emails .



    thanks

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3 Answers

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  • Expert
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Hi! Please try this. The big hoses that attaches the aircon blower and top vents might have fallen. You will need to reattach the hoses to the top vent to blow air. It'll work, HOpe this helps and have a good one!

Posted on May 03, 2010

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  • Cadillac Master
  • 6,826 Answers

Check the vacuum under the hood going to the fire wall into the car,there will be a vacuum reservoir,or check valve in the vacuum line that maybe damaged,then check the vacuum to the control ,in the dash.

Posted on May 02, 2010

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  • Master
  • 1,297 Answers

Your technician is correct, the doors are vacuum controlled but depending on what control unit you have you may have a more complicated issue than stated.

take a look at this and tell me if you need any more help...
AC air blowing only at the feet...no air on top. - 6481363.jpg


Posted on May 02, 2010

  • 1 more comment 
  • Sean Reisdorf
    Sean Reisdorf May 02, 2010

    first I need to know if you have an electronic control HVAC head or mechanical

    in other words do you see this on the dash?

    if you see the above then do the following...

    Ensure ignition is off for at least 10 seconds.
    Turn ignition on, with engine off.
    During a 2 second bulb check period, check if "SERVICE AIR COND," "SERVICE ENGINE SOON," and both CCP and FDC are lit.

    If all segments of readouts do not display, do not attempt further testing.
    This may lead to false diagnosis (Code "34" appears as "31," etc.)
    If any of the segments are inoperative, more complete testing of ECM/BCM system is needed.

    If display panels are okay, proceed
    Turn ignition on.
    Depress "OFF" and "WARMER" buttons on CCP panel.
    Simultaneously depress buttons until "8.8.8" appears on FDC panel, and "_188" appears on CCP. Code "8.8.8" appears as a check of all display segments and to indicate the beginning of diagnostic readout.

    NOTE:If all segments of readout do not display, diagnosis should not be attempted, as this could lead to misdiagnosis of system (Code "34" appears as "31," etc.) If any of the segments are inoperative, the affected display panel must be replaced.

    After display, "8.8.8" ends the segment check (approximately one second), "..E" will be displayed. This indicates beginning of ECM stored trouble codes.
    Following display of "..E," lowest numbered ECM trouble code will be displayed for 2 seconds on FDC. All ECM codes will be prefixed with an "E".

    NOTE:Trouble codes may appear prefixed with an "E" or "F" to designate which computer (ECM/BCM) detected the fault. The "E" codes will appear first.

    Progressively higher numbered ECM codes, if present, will be displayed consecutively for 2 second intervals until the highest code present has been displayed. If no ECM trouble codes are stored, "..E" display will be by-passed.
    Beginning of the second ECM trouble code cycle is indicated by an ".E.E" display. On second cycle, only current hard codes will be displayed. Hard codes indicate a currently present malfunction. If all ECM codes are history, ".E.E" display will be by-passed.

    NOTE:First pass of BCM diagnostic codes (".F") contain history codes - both hard and intermittent. Second pass (".F.F") contains only hard codes.

    When all ECM codes have been displayed, BCM codes will then be displayed. BCM codes will be displayed in the same format as ECM codes. All BCM codes are preceded by "..F" and "F.F" on the first and second cycles, respectively.

    After all ECM and BCM codes have been displayed, or if no codes were present, code ".7.0" will be displayed. Code ".7.0" indicates that the system is ready for next diagnostic feature to be selected.

    LET ME KNOW WHAT CODES YOU RETRIEVE



  • Sean Reisdorf
    Sean Reisdorf May 02, 2010

    my second post provided GREAT details on what you needed to do next
    with the codes from the HVAC I won't have a clue what steps need to be done next



  • Sean Reisdorf
    Sean Reisdorf May 03, 2010

    elismcruz...
    it appears you are talking to more than one expert but I cannot follow all your post
    when you make comments could you please include an experts name

    I am positive that the information I provided is the information you need to fix your concern but I have not seen any posts regarding weather or not you have manual or automatic controls and if you have pulled any codes yet



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