Volvo RWD 900 Forum

INDEX FOR 2/2026(CURRENT) INDEX FOR 4/2005 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Please verify IAC test results 900 1993

posted by  someone claiming to be ron from Detroit on  Tue Apr 12 14:04 CST 2005 [RELATED]

Please help verify if my IAC valve is functioning properly.
Bench test: Pins 1 to 2 and pins 2 to 3 measure 13 ohms.
At rest, the valve is open approximately 1/8 or an inch.

Voltage applied to pins 1 and 2 (I think) the valve travels the 1/8 inch to close all the way.

Voltage applied to pins 2 and 3, the valve swings a half inch or so to fully open position.

Thanks








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

Please verify IAC test results 900 1993

posted by  darmstrong on  Wed Apr 13 16:30 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Sep 13 12:21 CST 2014
[RELATED]

Is this for a 940? Is it LH 2.4 fuel injection? If so, it should have a 2 pin IAC which is spring loaded, and applying voltage forces it full open.

--
David Armstrong - '86 240(350k km?), '93 940T(270k km), '89 240(parts source for others) near Toronto








  REPLY TO THIS MESSAGE    PRINT   SAVE 

Please verify IAC test results 900 1993

posted by  someone claiming to be ron from Detroit on  Wed Apr 13 20:03 CST 2005 [RELATED]

Sorry, this is a 960








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

Please verify IAC test results 900 1993

posted by  darmstrong on  Fri Apr 15 00:05 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Sep 13 12:21 CST 2014
[RELATED]

So I guess it's LH2.2 then? Either way, I'm assuming that the valve is not spring-loaded - when you force it to either endstop, it stays there. If this is the case, the best test is to have it out of the car, and rotate it on its axis, jerking it back and forth. You should hear it click to each endstop easily (confirm by looking into intake/outlet).

Here's a post re: throttle body / TPS / IAC valve. In your case, if you want to exercise the unit by applying voltage, connect 12V to the center pin, and alternate ground between the 2 outside pins.


--
David Armstrong - '86 240(350k km?), '93 940T(270k km), '89 240(parts source for others) near Toronto








  REPLY TO THIS MESSAGE    PRINT   SAVE 

Please verify IAC test results 900 1993

posted by  someone claiming to be Happy on  Fri Apr 15 02:39 CST 2005 [RELATED]

Its Motronics 1.8 and it is spring loaded.







<< < > >>



©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.