# 2004 Volvo V40 **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 14, 2014, 10:49pm UTC](https://community.cartalk.com/t/2004-volvo-v40/85446 "2014-06-14T22:49:27Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Michaela](https://avatars.discourse-cdn.com/v4/letter/m/f4b2a3/32.png) [@Michaela](https://community.cartalk.com/u/Michaela)\ **Post date:** [June 14, 2014, 10:49pm UTC](https://community.cartalk.com/t/2004-volvo-v40/85446/1 "2014-06-14T22:49:27Z")
I have a V40 with 122,000 miles. About 4 to 5 years ago it started to sporadically drop subtly the RPM. It does this no matter the weather, air on or off, etc. the dealer about 2 years ago changed the idle sensor. The problem still exists today. This does not affect the performance of the car. I bought the car new, the transmission was replaced about a year and a half after I bought the car. ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [June 15, 2014, 7:20am UTC](https://community.cartalk.com/t/2004-volvo-v40/85446/2 "2014-06-15T07:20:02Z")
If it’s not shaking the car, at this age and mileage, I’d forget about it. (I would, however, mention it the next time it goes in for regular maintenance.) ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [June 15, 2014, 7:23am UTC](https://community.cartalk.com/t/2004-volvo-v40/85446/3 "2014-06-15T07:23:55Z")
Have you had the ECU scanned for fault codes? ---
**Author:** ![Michaela](https://avatars.discourse-cdn.com/v4/letter/m/f4b2a3/32.png) [@Michaela](https://community.cartalk.com/u/Michaela)\ **Post date:** [June 15, 2014, 7:57pm UTC](https://community.cartalk.com/t/2004-volvo-v40/85446/4 "2014-06-15T19:57:52Z")
No,I have not. Can ask when it goes in.