Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 10/2005 900 INDEX

[<<]  [>>]


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

'93 940 Rex-Regina - Gradual Rise to Too-high Idle 900

uid 27's pic
posted by  Art Benstein on  Fri Dec 6 14:56 CST 2019
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

Dear Spook,

May this find you in good spirits.

I suggest you (1) be sure the TPS is providing the ground to the ECU when your foot isn't on the footfeed by back probing the ECU pin 2 (orange wire?) with an LED test light and then, if that is working every time, (2) be certain the high idle air is being provided by the IACV by blocking the bypass hose.

(1) The TPS "click" can't be trusted after almost 30 years to guarantee electrical function.

(2) Throttle wear and adjustment error can provide idle air beyond the ability of the IACV to close it off.
--
Art Benstein near Baltimore


"People that can use a test light, meter, a scope, and talk to the consumer without being mean to them can do very well in this growing industry. I've been an electronics tech for 30 years so I know just how much fun this electronic stuff is." -Dave dl242gt






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New 1 '93 940 Rex-Regina - Gradual Rise to Too-high Idle [900]
posted by  spook  on Fri Dec 6 14:11 CST 2019 >


<< < > >>



©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.