Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2004 700 INDEX

[<<]  [>>]


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

Erratic Idle on Cold Start - Idle Air Control? 700 1989

posted by  Bean on  Sat Jan 15 04:14 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Aug 30 03:53 CST 2010
[RELATED]

My '89 765T has idle problems when it first gets started after sitting for ~8+ hours (overnight or after work). The tach will oscillate from ~500rpm to ~1500rpm over 20-30 seconds until something gets warmed up, on occaision the car will stall if I don't give it a little throttle. After it settles down and I can start driving there is also some slight hesitation for the first 1/2 mile...after warming up the car runs like a champ, no idle problems or hesitation.

Over the 20-30 seconds that the tach is oscillating, the amplitude will slowly work its way down to 750rpm and flatten out.

Idle control valve?
Injector not firing optimally on one cylinder?
Ignition power stage?

All ideas welcome! Thanks.

Bean
--
'80 242GT 93k, '94 945T 139k, '89 765T 68k (new '94 B230FT)






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Erratic Idle on Cold Start - Idle Air Control? [700][1989]
posted by  Bean  on Sat Jan 15 04:14 CST 2005 >


<< < > >>



©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.