Volvo AWD S40-V40 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 1/2022 S40-V40 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




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

Rough Idle...lower mpg S40-V40

posted by  AlanS on  Sun Jun 2 16:06 CST 2013
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Oct 4 19:59 CST 2014
[RELATED]

2001 S40....Rough idle. I changed the plugs, no change. It always ran smoothly at idle, you wouldn't know the engine was on...Now, the car vibrates at idle...What should I look at? What is the 'go to' list for this? I can't just keep popping $$$ into parts. Any ideas? Plus, the MPG's have gone down!








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Rough Idle...lower mpg S40-V40

    uid 5322's pic
    posted by  alschnertz on  Mon Jun 3 06:06 CST 2013
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:32 CST 2014
    [RELATED]

    Seems that these cars like "Volvo" spark plugs. Yes, I know Volvo does not make spark plugs, but it has proven difficult finding who the original manufacturer is. Actually, I just picked up a set from Tasca for around 24 bucks.

    Also check the plug wires. If they're the originals, they may be due for a change. It gets pretty hot under there.

    Then I'd say the usual suspects are dirty MAF, IAC and throttle body.

    Yes, they do run very smooth. Unfortunately lately ours will sometimes stall immediately after start-up. Happens maybe once every two weeks. It's just strange in that in the 4-5 years that we've owned it, that never happened. Ours has 175K on it.
    --
    "Differences of opinions should be tolerated, but not if they're too different' - Sharon Craig







<< < > >>



©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.