Low idle and hesitation
03-08-2019, 08:40 PM
#1
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Join Date: Mar 2019
Posts: 3
Low idle and hesitation
Hey, I have a 2000 z28. I can drive for awhile with now problems but if I shut it off for a few minutes then start it back up it has a low idle and hesitates when I try to go. It only does that for a minute or two then it runs fine again, any thoughts?
03-09-2019, 11:30 AM
#2
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,650
Re: Low idle and hesitation
Does it smell of fuel when that happens? Could be a leaking injector.
Or could be related to the O2 sensors. When you start the engine, there is no feedback from the O2 sensors for the first 3 minutes, because it can take that long for the PCM to enter closed loop and start correcting the A/.F ratio. A data log showing the long term and short term fuel corrections would show that problem.
Or could be related to the O2 sensors. When you start the engine, there is no feedback from the O2 sensors for the first 3 minutes, because it can take that long for the PCM to enter closed loop and start correcting the A/.F ratio. A data log showing the long term and short term fuel corrections would show that problem.
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