Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2003 700 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Need AC advice/ does turning on AC raise RPM? 700 1991

posted by  joshl on  Mon Jul 30 15:36 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Jul 31 10:47 CST 2007
[RELATED]

I've got the AC working. I had the problem like so many others of the air diverting to the floor upon acceleration. I plugged up the yellow and blue hoses that go to the center motor.

I had the AC system reworked with a variable orifice valve and the system works well.

What I want to know is does turning on the AC supposed to raise the RPM? Because it does not on my car. Currently my idle is at 500, I know it's a little low. I plan to clean the throttle body this week. But I am not noticing an automatic RPM increase when I turn on the AC.

CAn anyone offer clarification on this?


Thanks, Josh







  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Need AC advice/ does turning on AC raise RPM? 700 1991

    posted by  spasske on  Tue Jul 31 09:35 CST 2007
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Thu Oct 23 10:11 CST 2014
    [RELATED]

    You're base idle should be around 750. When the AC is turned on the idle should increase to 1000 RPM. Good luck!
    --
    Paul NW Indiana '89 740 Turbo 128,000








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Need AC advice/ does turning on AC raise RPM? 700 1991

    posted by  darylrobert on  Mon Jul 30 22:32 CST 2007
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Tue Aug 31 21:21 CST 2010
    [RELATED]

    g'day mate...yes rpm should go up when a/c activated (mine goes to 1000)...is ur car manual or auto??...doesnt it stall at 500rpm?? mine does...sounds like ur contant idle speed isnt working.. daryl from downunder








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Need AC advice/ does turning on AC raise RPM? 700 1991

      posted by  joshl on  Tue Jul 31 08:21 CST 2007
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Jul 31 10:47 CST 2007
      [RELATED]

      Hey there,

      Yes it's a automatic and it has stalled. It idles around 550, so I guess along with a throttle body cleaning perhaps a cleaning of the little unit below the intake mani would be a good idea.
      No?

      Josh








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Need AC advice/ does turning on AC raise RPM? 700 1991

        posted by  syncro on  Tue Aug 14 15:43 CST 2007
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Thu Mar 8 16:34 CST 2007
        [RELATED]

        Yes, the IAC valve should open more to compensate for the A/C. Mine sounds like a droning hum when I turn the A/C on. Its not the best example because its slow to respond, but you can tell it changes position.

        If your IAC valve isn't working, mine had a connector that was loose. I pinched the contacts so it would connect better to the IAC valve to fix.

        One way to test the valve is to ohm it out. You should get ~4 ohms if its good. Of course, that just means it will work. The test does not account for sluggish IAC valves. It just tests the electrical connections within it.






<< < > >>



©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.