RPM Jumps High when I Step on Clutcj - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Register Home Forums Photo Gallery Garage Search Today's Posts Mark Forums Read Auto Escrow
Problems and Service Talk about any mechanical problems you are having

YourCobalt.com is the premier Chevrolet Cobalt Forum on the internet. Registered Users do not see the above ads.
Closed Thread
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-23-2011, 12:21 AM
Newcomer
 
Join Date: Dec 2011
Location: Dallas,TX
Posts: 5
RPM Jumps High when I Step on Clutcj

Ok, I need some help here. Nobody can tell me exactly what is wrong with my 07' cobalt. The idle jumps when I step on the clutch to 3000 RPM and I have to play with the clutch and gas pedal to bring the RPM down to normal to stop so I don't blow my engine. The shop says its misfiring on the 4th cylinder and my o2 sensors are reading bad. I've cleaned my throttle body recently and changed the spark plugs about a year ago. I don't know I'd it's a bad injector or a vacuum leak or just a dirty IDLE AIR CONTROL VALVE. It has about 132000 miles on it and I keep all Maintence up on it regularly. So any insight would be great! Thanks!
Sponsored Links
Advertisement
 
  #2  
Old 12-23-2011, 07:57 AM
ChevyCustSvc's Avatar
Chevy Customer Service
YourCobalt.com Premium MemberExpert
 
Join Date: Nov 2010
Posts: 761
I looked into the general information I have available to me, and wasn't able to find any troubleshooting for the condition you're describing. If you were to decide on working with a dealership, please let me know through a private message as I would like to be sure to follow up with them and with you to see how things go.

Have a great holiday weekend,
Sarah
GM Customer Service
  #3  
Old 12-23-2011, 10:41 AM
acoutu's Avatar
Expert
 
Join Date: Apr 2011
Location: Kelowna, BC
Posts: 988
Garage
This is probably an obviously stupid question, but you are taking your foot off the gas when you put the clutch in right?

When you take your foot off the gas, do you start to engine brake, or does it just keep accelerating? This will be most noticeable in first gear...get going to 4-5000rpm and take your foot off the gas. You'll either slowly slow, or jolt forward and back...it'll be really obvious.
  #4  
Old 12-23-2011, 10:17 PM
Newcomer
 
Join Date: Dec 2011
Location: Dallas,TX
Posts: 5
As soon as go to stop from whatever gear I'm in, say 3rd and braking from 35 mph. As soon as I press on my clutch it's jumps up to 3000 rpm. And no, my foot is not on the gas. Lol been driving stick over 10 years. But it doesn't jump when I'm going up in gears only when I step on the clutch to stop. And if the engine is really cold still, it won't do it.
  #5  
Old 12-24-2011, 01:50 AM
Coby7's Avatar
Super Moderator
YourCobalt.com Premium Member


 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 8,972
Garage
Maybe your throttle plate is sticking. Try taping the gas pedal next time to see if it releases. Maybe you moved the plate sideways a little when you cleaned the throttle body.
__________________
Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2007 Cashmere metalic Cobalt LS Sedan 2.2L auto 1G1AJ55F977161789
Drives 2010 Crystal Claret Metalic Cobalt LT Sedan 2.2L auto 1G1AD5F57A7173167

Never drive faster than your guardian angel can fly
Sponsored Links
Advertisement
 
Closed Thread


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 04:54 AM.


Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO 3.3.2