# 2200 RPM ~ 70-ish MPH

**URL:** <https://community.cartalk.com/t/2200-rpm-70-ish-mph/4795>\
**Category:** Maintenance/Repairs\
**Tags:** yukon, gmc\
**Created:** [September 18, 2007, 2:43pm UTC](https://community.cartalk.com/t/2200-rpm-70-ish-mph/4795 "2007-09-18T14:43:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Brad\_Ott](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/brad_ott/32/361_2.png) [@Brad\_Ott](https://community.cartalk.com/u/Brad_Ott)\
**Post date:** [September 18, 2007, 2:43pm UTC](https://community.cartalk.com/t/2200-rpm-70-ish-mph/4795/1 "2007-09-18T14:43:41Z")

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I am the proud second owner of a 1997 GMC Yukon & have been since 1998. She now has over 200,000 miles. About 1 year (& 10,000 miles) ago I had all the spark plugs replaced. About 1 month ago she got a new fuel pump (in the gas tank) and a new fuel filter.  
  
  
  
 Here is the ‘problem’: for the past several years & still today at about 2200 RPM on the Interstate at about 70~ish MPH consistently only under those conditions the Yukon “misses-out” a bit. It never quits running and is mostly ackward & annoying when I am driving my carpool buddy.  
  
  
  
 Waddya think?

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [September 18, 2007, 2:59pm UTC](https://community.cartalk.com/t/2200-rpm-70-ish-mph/4795/2 "2007-09-18T14:59:17Z")

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No, I don’t think it’s caused by the presence of your carpool buddy. I DO think that it’s probably an ignition issue. Change the spark plug wires. Test. Disconnect each spark plug wire and observe it’s spark across a gapped spark tester (available from the auto parts store). If the spark is weaker from anyone(s), suspect the ignition coil(s).