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1989 Honda CRX Unknown Idle or Fuel Delivery Problem

Tiny
KDCHERLI
  • MEMBER
  • 1989 HONDA CRX
  • 4 CYL
  • FWD
  • MANUAL
  • 215,000 MILES
Hi,
My car will start and fun fine, but every time I drive it, the engine will randomly start revving up to 3~4k RPMs and will just sit there. Then when taking off, it's really jumpy until I get over 4k RPMs. As I start slowing down (stoplight, cars in front of me), the car will still continue to deliver fuel and run above 4k rpm, so I have to put the car into a lower gear or hit the breaks to keep from running into someone. While in neutral, the car will continue to spike around 3~4k rpms and the engine is running quite loudly. Then randomly it will stop and the car will idle perfectly quiet between 0~1k rpms. Car will run great a for a while, and then it starts up again. Please HELP! :) Thanks in advance
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Friday, January 15th, 2010 AT 9:22 AM

4 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi kdcherli,

Remove the air intake hose and check if any debris are stuck between the throttle plates.

Check if the throttle cable is stuck.

For the rpm to be revving, additional air must be able to past the throttle plates so you need to check for vacumn leaks as well.
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Sunday, January 17th, 2010 AT 5:47 AM
Tiny
TIPPLE_1999
  • MEMBER
  • 3 POSTS
My 88 CRX did this to. My issue was solved by replacing the O2 sensor.
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Sunday, January 17th, 2010 AT 1:25 PM
Tiny
KDCHERLI
  • MEMBER
  • 2 POSTS
Hey guys, just wanted to give you an update. It's fixed! I ended up cleaning out my iacv valve and now it runs great! :) Thx anyway
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Sunday, January 17th, 2010 AT 3:13 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Glad that you have solved your problem.

Cheers.
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Monday, January 18th, 2010 AT 7:10 AM

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