# An RPM question

**URL:** <https://community.cartalk.com/t/an-rpm-question/41989>\
**Category:** Maintenance/Repairs\
**Tags:** ford, taurus\
**Created:** [January 6, 2010, 10:22pm UTC](https://community.cartalk.com/t/an-rpm-question/41989 "2010-01-06T22:22:19Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Triedaq](https://avatars.discourse-cdn.com/v4/letter/t/65b543/32.png) [@Triedaq](https://community.cartalk.com/u/Triedaq)\
**Post date:** [January 8, 2010, 4:44pm UTC](https://community.cartalk.com/t/an-rpm-question/41989/21 "2010-01-08T16:44:19Z")

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As long as the transmission or clutch isn’t slipping, having both a speedometer and a tachometer is probably redundant. You can mark the tachometer for the speed in each of the gears and you can mark the speedometer for the rpm in the gear.

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**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\
**Post date:** [January 9, 2010, 12:33am UTC](https://community.cartalk.com/t/an-rpm-question/41989/22 "2010-01-09T00:33:48Z")

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Just to repeat a few that I agree with…I think it’s essential too as the owner’s manual point’s out, for appropriate down shifting w/o damaging the transmission for auto or manual.  
Keeping track of idle speed during warm up. I like to wait til it’s settle a little before "I’m out of here."  
It can also detect, like a warning light, poorly functioning transmission and encourage light throttle application to induce an automatic to shift as soon as possible when accelerating.

[Previous page](https://community.cartalk.com/t/an-rpm-question/41989.md?page=1)