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  #31  
Old 08-19-2011, 06:55 AM
Tommy2 Tommy2 is offline
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Default Re: 3.0 cold start problem

Quote:
Originally Posted by FireRanger View Post
Have you tried disconnecting the battery to force it to relearn it's idle. It sounds like its running poor in open loop and fine in closed loop once it is warmed up. Open loop does not use sensors to regulate fuel trim and other settings. It uses some fixed learned settings.
I'll give it a shot..
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  #32  
Old 08-19-2011, 10:18 AM
Tommy2 Tommy2 is offline
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Default Re: 3.0 cold start problem

Well, I disconnected the battery before I took off this morning. Didn't notice any cold bog! One test isn't quite enough to confirm it..but it'd be nice if that took care of it.

I knew the computer was in a closed loop on start up - but usually cars (I thought) ran better when cold, and then worse when warm - because then the computer is using data from sensors (that could be bad data, or bad sensors, etc..).
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  #33  
Old 08-19-2011, 10:21 AM
FireRanger FireRanger is offline
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Default Re: 3.0 cold start problem

Open loop is when cold. No sensors. Closed loop is once warmed up using sensors. But yea, usually this is the other way around and its an indication of a sensor problem. Hope it keeps working correctly now.
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