This is topic low/rough idle in forum Tech Talk at Northern California Ford Owners  .


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Posted by 1993 el ex (Member # 9489) on :
 
when i start my car in the morning (or after it has been sitting for multiple hours) my car has a really low idle and will die if i do not press the gas pedal. i have also noticed the idle has been fluctuating a lot. instead of holding at a relative constant rpm at idle it bounces between a couple hundred rpm. i have not measured exact fluctuation but you can hear the change and i notice my tach changing also. car is pretty much stock wt ~150k on motor.

has anyone experienced anything like this before? any advice for getting my car to run smoothly again?
 
Posted by Secnd2nun64 (Member # 1431) on :
 
You got a vacuum leak somewhere. Check the rubber hoses for cracks and replace.
 
Posted by 1993 el ex (Member # 9489) on :
 
now that u mention it my vac guage has had an unusual reading. ill check into that.

thanks
 
Posted by anderthizzle (Member # 7910) on :
 
My car use to do that and my friend took a ohm meter and hooked it up to the sensor on top of the throttle body and adjusted it and it didnt do it anymore.
 
Posted by fredfifty (Member # 10320) on :
 
i was just tinkering with my car because the idle would surge and drop back n forth...i tightened up the CAI around the rubber sleeves so that they were seated correctly with the tubing...and it idles much better.
 
Posted by 1993 el ex (Member # 9489) on :
 
thanks for the help guys.

i ended up cleaning out my IAC and now my idle is solid! cleaning it out also seems to have helped pick my acceleration [burnout]

here is a useful link for anyone else who wants to clean out their IAC

http://www.muscularmustangs.com/iac.php
 
Posted by fredfifty (Member # 10320) on :
 
im gonna try that when i get home..thanks for the link.
 




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