Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2005 850 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Very noisy IAC motor 850 1995

posted by  KlausC on  Sat Jan 28 06:30 CST 2006
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

My daughter has been having a harder and longer time to start the car. So I checked the codes this morning and came up 1-1-1 everywhere. She just turned 90K miles and is in need of an oil change, which will be done tomorrow.
When I turned the key to pos II, a loud buzzing sound came from the Idle Air Controler motor. This is NOT normal.
Should I replace the motor, is there a cleaning I could do? The car idles fine after it is started. It now takes 5-7 long seconds to start the car, used to be 2-3.

Klaus
--
(V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Very noisy IAC motor 850 1995

    posted by  someone claiming to be ksg on  Mon Jan 30 02:59 CST 2006 [RELATED]

    Is the IAC running in a different way than before, to compensate for something else wrong which would tend to prevent proper idling speed - such as dirty or sticking throttle linkage, ignition issue, etc? Doesn't the IAC usually stay in one position or change slowly, rather than changing rapidly (as would be suggested by a buzzing sound)?








    •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

      Very noisy IAC motor 850 1995

      posted by  KlausC on  Mon Jan 30 05:12 CST 2006
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Fri Oct 24 10:15 CST 2014
      [RELATED]

      If it wasn't so darned cold in the garage, I would clean out the TB and the valves/hoses in the IAC. I hope it wwill wait until spring...

      Klaus
      --
      (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Very noisy IAC motor 850 1995

        posted by  someone claiming to be bl on  Mon Jan 30 12:20 CST 2006 [RELATED]



        Hey Klaus,

        You'll have to turn loose of some them hard earned $$$ and put some heat out there. Then you can mess with them bricks year round. Made myself a propane salamander years ago for about $5.00 in junk parts and a half days time. Run you out of my garage when it's in the teens outside. Only problem is the noise...roars like a jet engine.

        bl








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Upadte, IAC motor 850 1995

    posted by  KlausC on  Sat Jan 28 10:20 CST 2006
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    I took the cover off and the noise almost went away. $%^# plastic parts! But I still don't know why the IAC motor is running with the key in pos II and the car not started. Is this normal? It's raining out so I can't check the V70 for the same thing. I just do not remember ever hearing the IAC before.

    Klaus
    --
    (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Upadte, IAC motor 850 1995

      posted by  Ten Sleep on  Mon Jan 30 13:17 CST 2006
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Mon Apr 14 16:35 CST 2014
      [RELATED]

      Klaus,

      Is this motor behind the passenger's side headlight near the firewall? I have a noise coming from that area that sounds like what you are describing. On my '95 850 Turbo, the noise is there when the ignition switch is in position II (motor not running) and is also there after the car is started. I haven't noticed any difference in the time to start the engine. However, my car did not make this sound until I got back from a three week vacation (car was parked at the house the whole time). I started the car to run it for a little while when I returned and noticed the noise then, and it still is there one month later.

      On a related note, I really need to by a good manual for this car. Does Bentley publis one?
      --
      Ten Sleep 1980 245DL 1995 850 Turbo








      •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

        Upadte, IAC motor 850 1995

        posted by  KlausC on  Mon Jan 30 14:49 CST 2006
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Fri Oct 24 10:15 CST 2014
        [RELATED]

        The IAC is just infront of the throttle body, under the plastic cover for the accellerator cables.
        I just checked my 95, and cannot find any vibration coming from behind the headlight. Besides, my IAC is humming so much, I can't tell if anything else is making noise. I know it never made that much noise before. My 98 is quiet.
        I looked at my almost worthless Haynes manual, no mention of anything behind the pass headlight. My green book for the 164 at least has pictures and drawings of everything in the engine bay, with every part labled! I really don't need two chapters devoted to rebuilding and engine.

        Klaus
        --
        (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Upadte, IAC motor 850 1995

      posted by  Rule 308 on  Sat Jan 28 21:35 CST 2006
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue May 8 09:20 CST 2012
      [RELATED]

      Klaus,

      They can be loud bastards huh? Yes that is normal.

      Mark








      •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

        Upadte, IAC motor 850 1995

        posted by  KlausC on  Sun Jan 29 04:53 CST 2006
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Fri Oct 24 10:15 CST 2014
        [RELATED]

        Thanks Mark,
        Its just that I never heard the IAC before. When I took the plastic cover off, the motor still hummed and I thought it strange that it was running eventhough the engine had not been started yet. I have to check the tie down strap tension to make sure it hasn't gotten old and cracked. Awful noise.
        Without the cover, it just quietly humms.

        Klaus
        --
        (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          Upadte, IAC motor 850 1995

          posted by  Wallie on  Mon Jan 30 03:55 CST 2006
          Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
          last visit: Sun Oct 3 16:18 CST 2010
          [RELATED]

          I noticed this myself about the IAC motor a couple months ago when the 94 855T had a bad cam shaft position sensor. I was surprised how loud it was and at first thought that was my problem. I never noticed it before on the R but checked it after the 94 issue and sure enough they both do the same thing!
          --
          Wallie







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.