# 2005 volvo s40 engine boggs when i accelerate hard on cold days within first couple of minutes **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** volvo, s40\ **Created:** [February 3, 2013, 12:45am UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123 "2013-02-03T00:45:06Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Ldenorio](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Ldenorio](https://community.cartalk.com/u/Ldenorio)\ **Post date:** [February 3, 2013, 12:45am UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/1 "2013-02-03T00:45:06Z")
hi i have a 2005 volvo s40 i on a cold day when i start car and take off it boggs, there is no pep it seems like its struggling, after a couple minutes of driving she is back to normal. i replaced spark plugs - no diff- any suggestions thanks Larry ---
**Author:** ![UncleTurbo](https://avatars.discourse-cdn.com/v4/letter/u/e9a140/32.png) [@UncleTurbo](https://community.cartalk.com/u/UncleTurbo)\ **Post date:** [February 3, 2013, 5:33am UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/2 "2013-02-03T05:33:42Z")
In cold climates the computer is supposed to call for a rich mixture until the motor warms up. This is not working properly on your car. It can be a bad computer, a sensor off line, and lots of other things. ---
**Author:** ![Ldenorio](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Ldenorio](https://community.cartalk.com/u/Ldenorio)\ **Post date:** [February 3, 2013, 7:30pm UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/3 "2013-02-03T19:30:01Z")
can i self diagnose this or is this a pro repair, i am a bit handy around a car ---
**Author:** ![mleich](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mleich](https://community.cartalk.com/u/mleich)\ **Post date:** [February 3, 2013, 9:14pm UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/4 "2013-02-03T21:14:14Z")
Don’t “accelerate hard” until the car is warmed up. There might not be anything wrong with the car. ---
**Author:** ![UncleTurbo](https://avatars.discourse-cdn.com/v4/letter/u/e9a140/32.png) [@UncleTurbo](https://community.cartalk.com/u/UncleTurbo)\ **Post date:** [February 3, 2013, 11:13pm UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/5 "2013-02-03T23:13:54Z")
Find and clean the MAF, mass airflow sensor. You should be able to do it yourself and it might help. Not likely, but worth a shot. When did you replace the spark plugs? Weak, old plugs, can have problems getting the rich mixture of a cold engine to fire. New plugs is something you can do that might help. ---
**Author:** ![Ldenorio](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Ldenorio](https://community.cartalk.com/u/Ldenorio)\ **Post date:** [February 4, 2013, 1:45am UTC](https://community.cartalk.com/t/2005-volvo-s40-engine-boggs-when-i-accelerate-hard-on-cold-days-within-first-couple-of-minutes/77123/6 "2013-02-04T01:45:50Z")
@mleich - never had a problem before with the car, it was always responsive. i just replaced the spark plugs a couple of days ago hoping it would fix the problem what r some of the sensors u spoke of?