High rpm

2004 NISSAN MAXIMA
162,000 MILES • V6 • 2WD • AUTOMATIC
Avatar
SHANA LEA GRIBBINS
  • MEMBER
  • 1 POST
I just bought this car and i am having problems with the rpm's running high. When I hit the brake the rpm's go up a few hundred and then will come back down and when this happens I can feel the jump in acceleration. Also, because the rpm's run high, when I go to shift into another gear without letting the rpm's come down, it will shift hard making it feel like my transmission is hitting hard. Anyone know what could b causing this?
Jan 25, 2017 at 10:08 AM
Advertisement
Avatar
CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
The most common cause of high engine speed without a corresponding increase in power is a vacuum leak. Start with a visual inspection of the rubber vacuum hoses. There is a vacuum hose routing diagram on the emissions sticker under the hood that shows which hoses to check. If the leak is bad enough, you may be able to hear the hiss while the engine is running. Spraying water over the hoses while the engine is still cold can be an effective way to find some leaks. Watch where the water gets sucked in.
Jan 25, 2017 at 12:12 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.