Idle fluctuates when cold 93 bonneville

SOURCE: mercedes 190e 2.6 auto,starts fine

MAY REQUIRER THROTTLE BODY CLEAN UP,OR FUEL CLEANER IN THE SYSTEM...

SOURCE: ford f250 2003 super duty diesel 6L - loss of power and idle fluctuates

icp sensor, definitly. you can get to it but you have to go from the bottom. remove the trans filler tube, and lower the the trans slightly, then you can remove the turbo heat shield and get to the sensor, you will need a 1 1/16" 12 point crows foot socket for the sensor its self.

SOURCE: when cold, it idles rough, revs high then low! After warmed up it runs fine

if it runs high when you first start it then mellows out,, theirs no problem , all of our chevys do that.... but if its sputtering or you hear a quiet popping noise check spark plugs

ray calhoun

• 166 Answers
• Posted on Jul 17, 2009

SOURCE: 2000 Bonneville runs rough when cold

you need to get it scaned.auto zone will do it for free but most of the time it a o2 sensor or coolant sensor

SOURCE: Nissan Altima Fluctuates Idle

SOUND LIKE THE ECM IS HUNTING FOR THE IDLE LOOK FOR A VACUME LEAK IN OR AROUND INTAKE MANIFOLD , ITS KINDA TRICKY BUT A CAN OF CARB SPRAY CAREFULLY AROUND YTHE AREA CAN PINPOINT THE LEAK BUT GET A HELPER WITH A FIRE EXT TO HELP JUST IN CASE IF IT DOSNT REV UP WHEN YOU SPRAY THE LEAK AREA THEN YOUV GOT TO GET IT ON A SCANNER TO CHECK IT OUT WE USALLLY CHARGE ,5 HRS TO DO THIS SO ITS NOT REAL EXPENSIVE GOOD LUCK