Monte Carlo Repair Help Have a Monte problem and need help? Good at troubleshooting? Discuss it here!

6th Gen ('00-'05): idling for a bit warming up

  #1  
Old 03-05-2019, 07:32 AM
avendo's Avatar
3 Year Member
1 Year Member
Thread Starter
Join Date: Oct 2014
Posts: 448
Default idling for a bit warming up

when my car idles for a while warming up it seems to start to run like crap.stumbles etc,what would cause that? 3.8 supercharged..126k..good plugs,wires MAF...
 
  #2  
Old 03-05-2019, 09:27 AM
Join Date: Mar 2015
Location: Vegas Baby
Posts: 38
Default

I'm no mechanic, nor have I played one on the but I was just having the same I and it turned out to be one of the injectors was bad. If you can unhook the electrical and use a multi meter to check resistance on the injectors. They should all be about the same ohm reading, if one or two is off that would be your problem. Good luck
 
  #3  
Old 03-06-2019, 07:40 AM
avendo's Avatar
3 Year Member
1 Year Member
Thread Starter
Join Date: Oct 2014
Posts: 448
Default

I have a broken screw in the IAC..i ordered a new one,heard that can cause it too..
 
  #4  
Old 03-06-2019, 07:53 AM
ChibiBlackSheep's Avatar

Monte Of The Month -- August 2014
10 Year Member
5 Year Member3 Year Member1 Year Member
Join Date: Sep 2008
Location: Wyncote, PA
Posts: 24,794
Default

There's a few issues that could cause it. When a car is cold, it's dumping extra fuel into it to warm it up quicker, and wait for the sensors to get warm and in the ready state, before it switches over to making AFR adjustments based on the sensors.

If it's not your IAC screw messing you up, it could be a fueling issue or an oxygen sensor starting to go.
 
  #5  
Old 03-07-2019, 06:02 AM
avendo's Avatar
3 Year Member
1 Year Member
Thread Starter
Join Date: Oct 2014
Posts: 448
Default

It does it when its warmed up also...i hve not put my scan tool on to see what it says when it happens..
 

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory

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.