IAC values on scanner ---help. - Ford Mustang Forum
LinkBack Thread Tools
post #1 of 2 (permalink) Old 01-04-2013 Thread Starter
Made Member
5.0L Member
adabiri2's Avatar
Joined: Nov 2007
Location: Charleston
Posts: 315
IAC values on scanner ---help.

95' GT auto. Its runnin pig rich, always has, changed every sensor on the engine and more, just wont run right or shift right. Stays under a heavy load constantly.

So im riding with mechanic as he scanning with a pegisus scanner and everything looks spot on. Fuel trim values were ok but it only get 150-180 to a full tank. When u drive up a hill it wont downshift.

Really only thing that stuck out to me was the IAC values. It switched low from like 20 something to 60+(New Motorcraft$$$.)

Ford MAF does not throw CEL. Both NAPA and DELPHI MAF's throw a lean code on both banks. No vacuum leaks or obvious stuff.

Nobody knows whats wrong. 4 scans now, dealer and independent shops. Idk?? If anyone has experience help me out please!!!! Every sensor is new including the MAF. The ford(original)MAF seems to be the best one so far, but it doesn't run right with it. The napa one doesn't idle correctly but has better acceleration and just all around better while your driving. The DELPHI one i put in today the car won't run at all- nothin. Stumpped.
adabiri2 is offline  
Sponsored Links
post #2 of 2 (permalink) Old 01-04-2013 Thread Starter
Made Member
5.0L Member
adabiri2's Avatar
Joined: Nov 2007
Location: Charleston
Posts: 315
^^^ Another thing..................

With the Ford and DELPHI MAF's when rolling down a hill no gas pedal, the exhaust sound is a huffing sound.

The NAPA MAF it pops and cracks sounds really great. Like its supposed to. The others MAFs will not produce this fuel mix....
adabiri2 is offline  
Sponsored Links

Quick Reply

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


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:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

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 Off
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