1999 TACOMA IDLES HIGH

1999 ALL OTHER MAKES ALL OTHER MODELS
Avatar
GORDON SANDERS
  • MEMBER
  • 1 POST
MY TACOMA IS IDLING HIGH AND THE CHECK ENGINE LIGHT CAME ON. PUT IT ON THE COMPUTER AND GET THE CODE P0505 IDLE CONTROL SYSTEM MALFUNCTION. WHAT COULD CAUSE THIS MALFUNCTION? IS IT THE IDLE AIR CONTROL VALVE?
Feb 21, 2007 at 2:11 PM
Advertisement
Avatar
KIN CHAN
  • MEMBER
  • 453 POSTS
theres a few reason u can set a code and idle high as follow:
1.) losing power or ground or both
2.) devices mechanically stucked
3.) vac /hoses leaks or lose
4.) ECM
way to test is is using a toyota scanner - master tech and bidirectional open or close thru the scanner and watch the value related to rpm...

good luck
Feb 21, 2007 at 3:17 PM