1997 Honda City idle fluctuates when AC is ON

1997 HONDA CITY
90,000 MILES • 4 CYL • FWD • MANUAL
Avatar
JJMD3_787
  • MEMBER
  • 6 POSTS
Idle is at 800 rpm when compressor is not engaged but when engaged the idle fluctuates from 800 rpm to below 600 rpm . . . causing the compressor to disengage inorder to prevent the engine from dying.

This happens at an irregular interval.

Thanks in advance!
May 27, 2010 at 2:27 AM
Advertisement
Avatar
RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be an idle up solenoid problem or the alternator is not compensating for the AC additional load.
May 27, 2010 at 2:31 AM
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.