Notices
2010-2014 Mustang Information on The S197 {GenII}
Sponsored By:
Sponsored By:

Issues on cold start up

Thread Tools
 
Search this Thread
 
Old 10/8/14, 04:51 PM
  #1  
Legacy TMS Member
Thread Starter
 
jim010's Avatar
 
Join Date: November 7, 2006
Location: Alberta
Posts: 2,790
Received 49 Likes on 43 Posts
Issues on cold start up

Lately when I start my car when the engine is cold, it idles rough. Rougly idles at about 1500 and then settles down after a few moments and is good.

But it has gotten worse. Today it idled really rough and then it sounded like clunking where it almost choked. Did that 2 times in succession. It then settled down and was fine. It did that again when I started it up to come home from work.

I am thinking it is my tune, but why is it getting worse?
Old 10/9/14, 12:34 AM
  #2  
Cobra Member
 
xtc.inc's Avatar
 
Join Date: December 22, 2010
Posts: 1,023
Likes: 0
Received 9 Likes on 7 Posts
Sounds like its running lean.
Old 10/9/14, 05:01 AM
  #3  
Post *****
 
cdynaco's Avatar
 
Join Date: December 14, 2007
Location: State of Jefferson Mountains USA
Posts: 20,005
Likes: 0
Received 4 Likes on 4 Posts
Maybe time to clean the throttle body and the MAF?
Old 10/9/14, 06:53 AM
  #4  
Cobra Member
 
JoeMidnight's Avatar
 
Join Date: April 21, 2014
Location: Canada, Ontario
Posts: 1,099
Received 2 Likes on 1 Post
Originally Posted by jim010
Lately when I start my car when the engine is cold, it idles rough. Rougly idles at about 1500 and then settles down after a few moments and is good.

But it has gotten worse. Today it idled really rough and then it sounded like clunking where it almost choked. Did that 2 times in succession. It then settled down and was fine. It did that again when I started it up to come home from work.

I am thinking it is my tune, but why is it getting worse?
if you think its the tune, restore the car to its factory tune and see if the issue goes away, I would think that would be a quickest way to find out...
Old 10/9/14, 11:18 AM
  #5  
CURRENTLY NOT ACTIVE ON THIS SITE DO NOT USE PM FEATURE!
 
FordServiceCA's Avatar
 
Join Date: July 2, 2013
Posts: 26
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by jim010
Lately when I start my car when the engine is cold, it idles rough. Rougly idles at about 1500 and then settles down after a few moments and is good.

But it has gotten worse. Today it idled really rough and then it sounded like clunking where it almost choked. Did that 2 times in succession. It then settled down and was fine. It did that again when I started it up to come home from work.

I am thinking it is my tune, but why is it getting worse?
Thanks for reaching out about this, jim010. Have you reached out to your local dealer regarding this concern? I suggest doing so if you haven't already. Also, please send along a current odometer reading so I can research available options.

Brittany

Last edited by FordServiceCA; 10/9/14 at 11:20 AM.
Old 10/9/14, 07:07 PM
  #6  
Legacy TMS Member
Thread Starter
 
jim010's Avatar
 
Join Date: November 7, 2006
Location: Alberta
Posts: 2,790
Received 49 Likes on 43 Posts
I can't go to the dealer if it is a tune. I have to do some trouble shooting first. Setting back to stock tomorrow.
Old 10/10/14, 06:56 AM
  #7  
GT Member
 
scott9050's Avatar
 
Join Date: April 9, 2014
Posts: 127
Received 0 Likes on 0 Posts
Originally Posted by jim010
Lately when I start my car when the engine is cold, it idles rough. Rougly idles at about 1500 and then settles down after a few moments and is good.

But it has gotten worse. Today it idled really rough and then it sounded like clunking where it almost choked. Did that 2 times in succession. It then settled down and was fine. It did that again when I started it up to come home from work.

I am thinking it is my tune, but why is it getting worse?
Sounds like the open loop cycle that occurs at start up needs adjustment in the tune.
Old 10/10/14, 09:09 AM
  #8  
Legacy TMS Member
Thread Starter
 
jim010's Avatar
 
Join Date: November 7, 2006
Location: Alberta
Posts: 2,790
Received 49 Likes on 43 Posts
I'll pass that on to my tuner guy, thanks.
Old 10/11/14, 02:46 PM
  #9  
Legacy TMS Member
Thread Starter
 
jim010's Avatar
 
Join Date: November 7, 2006
Location: Alberta
Posts: 2,790
Received 49 Likes on 43 Posts
Originally Posted by scott9050
Sounds like the open loop cycle that occurs at start up needs adjustment in the tune.
So what is the clunking that I am hearing, if that is the case?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jlaval05
GT Performance Mods
2
8/27/15 10:08 AM
GT/CS Guy
2005-2009 Mustang
4
8/13/15 07:54 PM
ClayP
2010-2014 Mustang
12
8/3/15 09:00 PM
mustanglindsey
Repair and Service Help
5
8/3/15 09:07 AM



Quick Reply: Issues on cold start up



All times are GMT -6. The time now is 12:16 AM.