# First upshift with a bump

**URL:** <https://community.cartalk.com/t/first-upshift-with-a-bump/10663>\
**Category:** Maintenance/Repairs\
**Created:** [February 14, 2008, 6:38pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663 "2008-02-14T18:38:25Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![scoutcat](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@scoutcat](https://community.cartalk.com/u/scoutcat)\
**Post date:** [February 14, 2008, 6:38pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/1 "2008-02-14T18:38:25Z")

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I have Mazda 6, 2004. For about a week now the first upshift (1-\>2) after cold start, sometimes even second one (2-\>3) happens with a “bump”. Any ideas?

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [February 14, 2008, 7:36pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/2 "2008-02-14T19:36:57Z")

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How many miles?? Is the check engine light on?? Has anyone scanned it for codes??

transman

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [February 14, 2008, 8:30pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/3 "2008-02-14T20:30:12Z")

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The first step is to check the fluid level and condition.

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**Author:** ![scoutcat](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@scoutcat](https://community.cartalk.com/u/scoutcat)\
**Post date:** [February 14, 2008, 10:12pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/4 "2008-02-14T22:12:46Z")

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33000, no engine check light (it means there are no codes to scan, right?). Thanks for replying! It seems like this first 1-\>2 shift happens at lower RPMs than it does after I drive for a while. Need another cold start to verify.

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**Author:** ![scoutcat](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@scoutcat](https://community.cartalk.com/u/scoutcat)\
**Post date:** [February 14, 2008, 10:13pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/5 "2008-02-14T22:13:24Z")

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fluid level is good, color too, thanks for replying!

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**Author:** ![pleasedodgevan](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pleasedodgevan](https://community.cartalk.com/u/pleasedodgevan)\
**Post date:** [February 14, 2008, 10:20pm UTC](https://community.cartalk.com/t/first-upshift-with-a-bump/10663/6 "2008-02-14T22:20:07Z")

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Make sure it isn’t overfilled with transmission fluid. Check it according to the owner’s manual. Old transmissions in cold, cold weather (GM turbo 350) can shift hard like that.