General 1967-2002 F-Body Tech For general F-Body discussion that does not fit in any other forum.
For F-Body Technical/Information Discussion ONLY

Low idle and hesitation

Old 03-08-2019, 08:40 PM
  #1  
Registered User
Thread Starter
 
Fbodymaro's Avatar
 
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?
Fbodymaro is offline  
Old 03-09-2019, 11:30 AM
  #2  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,138
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.
Injuneer is offline  
Old 03-09-2019, 02:14 PM
  #3  
Registered User
Thread Starter
 
Fbodymaro's Avatar
 
Join Date: Mar 2019
Posts: 3
Re: Low idle and hesitation

I don't smell any fuel, I replaced the O2 sensors a few months ago.
Fbodymaro is offline  
Old 03-10-2019, 10:19 AM
  #4  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,138
Re: Low idle and hesitation

Does it start and idle correctly when the engine is started cold?

Injuneer is offline  
Old 03-10-2019, 10:26 AM
  #5  
Registered User
Thread Starter
 
Fbodymaro's Avatar
 
Join Date: Mar 2019
Posts: 3
Re: Low idle and hesitation

Yea it runs fine
Fbodymaro is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ENRKyle20
Computer Diagnostics and Tuning
6
08-28-2013 09:31 AM
jeff_is_sexy
LT1 Based Engine Tech
5
12-20-2006 07:37 PM
Z28black93
LT1 Based Engine Tech
0
04-18-2006 10:39 PM
OnefstCamaroZ28
LT1 Based Engine Tech
6
04-27-2004 09:18 PM
ChickenScreamer94
LT1 Based Engine Tech
20
02-28-2004 06:03 AM


Thread Tools
Search this Thread
Quick Reply: Low idle and hesitation


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.