EEC interchangability question - Ford Mustang Forums : Mustang Forum
LinkBack Thread Tools Display Modes
post #1 of 3 Old 04-07-2011, 07:29 PM Thread Starter
Registered User
86drop's Avatar
Trader Feedback: (1)
Join Date: Nov 2000
Location: San Antonio, TX, USA
Posts: 277
EEC interchangability question

Alright, so the car I'm working on is an '86 LX, originally 3.8, that I have swapped a 5.0 from a '91 into. The EEC I have is from the '91 and I believe it is an A9M. The engine wiring harness is from an '86 and has been converted to a mass air setup. My question is this, is there an EEC that will mate directly to the 60 pin connector of the '86 harness and allow the use of mass air without having to repin the connector to match the EEC? I don't know what year they changed up the 60 pin arrangement but I'm hoping that it didn't coincide with the swap from speed density to mass air. Thanks for any help guys!

86drop is offline  
Sponsored Links
post #2 of 3 Old 04-07-2011, 08:27 PM
Registered User
liljoe07's Avatar
Trader Feedback: (18)
Join Date: Feb 2009
Posts: 3,983
All Foxbody MAF EEC's are pinned the same.

89 Coupe: POS
Tuner: QuarterHorse, BE & EA, AEM Wideband
liljoe07 is offline  
post #3 of 3 Old 04-07-2011, 09:14 PM
Registered User
Trader Feedback: (0)
Join Date: Apr 2011
Location: Oregon
Posts: 1
EEC replacement

A few years ago my 86' LX former pursuit vehicle has been changed from speed density to MAF w/ a 1991 harness and EEC (A9P). A Tweecer was also installed after conversion. The EEC now needs to be replaced. Having difficulty finding an A9P (w/ the exception of junk yard hunting) we have done a lot of research including the link Ford Fuel Injection. We ordered and purchased a U4PO based on a Cardone number. The main difference here is this EEC is meant for AODE and my LX has an AOD. We're thinking because the Tweecer will change the programming anyway, it should work. Any thoughts as to whether there will be an issue there?
esschmidt is offline  
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the Ford Mustang Forums : 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.

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
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

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