1999 Mercury Cougar idle air control valve

Tiny
JONY
  • 1999 MERCURY COUGAR

Electrical problem
1999 Mercury Cougar 6 cyl Two Wheel Drive Manual 135000 miles

Hi I have a Mercury Cougar V6 and recently the check engine light went on and idle was going high when I press the gas pedal. The rpms go up and down and then come to normal every time I press the gas pedal. I got the car scan and it said the idle air control valve was malfuctioning so I switch it for a bran new one and I still have the same problem but when I disconnect the valve from the cable its connected to the car runs great the rpms stay normal but the check engine light its still on what can I do should I leave the cable plug in or unplug it?

Do you
have the same problem?
Yes
No
Wednesday, May 26th, 2010 AT 9:21 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER

Check and test the mass airflow sensor and the throttle position sensor.

Was this
answer
helpful?
Yes
No
Thursday, May 27th, 2010 AT 12:04 AM

Please login or register to post a reply.

Other Idle Air Control Valve IAC Questions