2002 idling promblems - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 01-16-2011 Thread Starter
Rookie
 
terry77's Avatar
 
Joined: Jan 2011
Location: portsmouth
Posts: 2
 
2002 idling promblems

i got 2002 that was missing ford dealer said it needed a new pcm so i found one at salvage yard ford dealer reflashed it. now the miss is gone but it idles at about 2500-3000rpm and the exaust gets cherry red real quick. done a diag and it reads p1509 idle air malfunction so i changed it and the promblem still there. have no clue what to do now

terry77 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 01-17-2011
SHELBY GT 350 Member
V6 Member
 
Markstang's Avatar
 
Joined: Jan 2009
Location: Dumont
Posts: 6,168
 
weird.. you've definitely got a lean condition.. sounds like something(computer/faulty wiring) is holding the IAC open.. you'll probably want to test the voltages in the IAC wiring.. make sure all the connectors are clean and secure, both from the wire to the IAC, and the computer's wires


2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'
Markstang is offline  
post #3 of 5 (permalink) Old 01-17-2011
MACH I Member
V6 Member
5.0L Member
 
metalman302's Avatar
 
Joined: Dec 2010
Location: Phoenix
Posts: 2,907
 
Is it possible your old one went bad and then you put the new one on backwards? Does the idle get a few hundred RPM higher once the engine warms up? This exact thing happened to my friend on his tbird. He swore up and down he put the new one on correctly but apparently not. Also there is the chance your new IAC could be defective.
metalman302 is offline  
 
post #4 of 5 (permalink) Old 01-17-2011
SHELBY GT 350 Member
V6 Member
 
shinerstang's Avatar
 
Joined: Mar 2006
Location: Greensburg
Posts: 8,348
 
Try disconnecting the IAC when the car is idling. See if it tries to stall out......

2002 V6 Turbo 10:[email protected]
2001 V6 Nitrous 12:[email protected]
shinerstang is offline  
post #5 of 5 (permalink) Old 01-18-2011 Thread Starter
Rookie
 
terry77's Avatar
 
Joined: Jan 2011
Location: portsmouth
Posts: 2
 
when i unplug the IAC it dies
terry77 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


Search Engine Friendly URLs by vBSEO 3.6.1