Ok, something is not right - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 10-24-2014, 07:23 AM   #1
Registered Member
Regular
 
samcrored's Avatar
 
Join Date: Feb 2014
Location: atlanta
Region: Georgia
Posts: 90
Ok, something is not right

00 mustang gt...k...it started idling very low and almost dying when coming to a stop. (on stock tune)...so i loaded a sct tune..did the same. ok. i replaced the IAC twice. no vacuum leaks, cops are good o2 are good, MAF is good literally everything checks out on the computer. but it still has that low dropping idle. Also....after the second IAC it idled bad on tune...idles right on stock tune. i am so confused. before it was the stock tune that started messing up. now the stock tune is working fine but any of the act bama tunes are idling low. note: i have had bama tunes on and off the car for a year, it NEVER did this before. so....can it be the tune? why would the tune change randomly? im so over this crap
samcrored is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 10-24-2014, 08:16 AM   #2
Registered Member
Regular
 
Cbird's Avatar
 
Join Date: Jun 2014
Location: Des Moines, Iowa
Region: Iowa
Posts: 456
Ok, something is not right

If you frequently switch tunes out a lot there is always the risk that they have corrupted. That's literally the only thing I can think of. This mustang is really giving you a headache isn't it? :p

I've had a tune corrupt before and what I was instructed to do was: return car to stock and unhook the battery,install the latest drivers for my x3, get copies of my tunes from Bama and re-upload them to my x3, re hook battery and throw the tunes back ok.

Might want to start there.. Hang in there bro


Sent from my iPhone using Mustang Evolution
Cbird is offline   Reply With Quote
Old 10-24-2014, 08:23 AM   #3
Registered Member
Regular
 
samcrored's Avatar
 
Join Date: Feb 2014
Location: atlanta
Region: Georgia
Posts: 90
I actually did that once before but for a different reason...but yeah i am getting tired of it .. i hate driving it with the stock tune but it doesnt want to die on me lol...
samcrored is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 10-24-2014, 12:13 PM   #4
Lorraine's driver

Regular
 
ab_mach1's Avatar
 
Join Date: Feb 2012
Location: Indianapolis
Region: Indiana
Posts: 7,858
Maybe the throttle position sensor is bad or going bad..?


2004 Azure Blue Mach 1
IG: @azurebluemach
__________________
Instagram: @ab_mach1
ab_mach1 is offline   Reply With Quote
Old 10-24-2014, 12:17 PM   #5
Registered Member
Regular
 
samcrored's Avatar
 
Join Date: Feb 2014
Location: atlanta
Region: Georgia
Posts: 90
would it be the tps ...if it runs normal with no tune now? and bad with the tune?
samcrored is offline   Reply With Quote
Old 10-24-2014, 12:21 PM   #6
Lorraine's driver

Regular
 
ab_mach1's Avatar
 
Join Date: Feb 2012
Location: Indianapolis
Region: Indiana
Posts: 7,858
Quote:
Originally Posted by samcrored View Post
would it be the tps ...if it runs normal with no tune now? and bad with the tune?

No, probably not. I think you said it had the problem with both stock and the new tune. It just wasn't as bad right?


2004 Azure Blue Mach 1
IG: @azurebluemach
__________________
Instagram: @ab_mach1
ab_mach1 is offline   Reply With Quote
Old 10-24-2014, 01:10 PM   #7
Lorraine's driver

Regular
 
ab_mach1's Avatar
 
Join Date: Feb 2012
Location: Indianapolis
Region: Indiana
Posts: 7,858
And if it only happens with an aftermarket tune, you might try rotating the MAF sensor housing about 1/4 turn. Sometimes the aftermarket CAI and fancy filters can change the airflow direction slightly so it's not flowing over the sensor as well. Some peeps have this issue when they remove the MAF screen and some don't. As always, make sure you don't have any leaks in you intake tubing. Unmetered air will always cause funky probs.


2004 Azure Blue Mach 1
IG: @azurebluemach
__________________
Instagram: @ab_mach1
ab_mach1 is offline   Reply With Quote
Old 10-24-2014, 01:24 PM   #8
Registered Member
Regular
 
Laquisha's Avatar
 
Join Date: Apr 2014
Location: San Antonio
Region: Texas
Posts: 1,279
Same thing happens to me at idle too' Drop to like 200 bounces up to 1000 then 500 then 750 then 500 etc. This happened recently, but before my car was tuned.... HMMM?
Laquisha is offline   Reply With Quote
Old 10-24-2014, 06:31 PM   #9
Registered Member
Regular
 
Cbird's Avatar
 
Join Date: Jun 2014
Location: Des Moines, Iowa
Region: Iowa
Posts: 456
Quote:
Originally Posted by TrevorB3 View Post
Same thing happens to me at idle too' Drop to like 200 bounces up to 1000 then 500 then 750 then 500 etc. This happened recently, but before my car was tuned.... HMMM?

In your case it's probably the idle air control valve


Sent from my iPhone using Mustang Evolution
Cbird is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help brand new car something isnt right Aruiz42 General Mustang Discussion 10 12-27-2012 03:17 PM
Something isn't right here...... Brent Pictures and Videos 1 05-21-2008 02:22 AM
Made Some Changes.... let me know if something doesnt work right Brent ME Site Help & Announcements 3 02-23-2007 07:10 AM
Bout Time Bush Does Something right bluemustang The Bar 26 10-06-2006 11:08 PM
right place at the right time with a camera (2 owned pics) fast64 The Bar 8 05-12-2004 11:20 PM

» Like Us On Facebook



09:27 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.