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Fox T-Bird/Cougar Forums

Technical => Electrical Tech => Topic started by: vinnietbird on April 16, 2007, 07:20:05 AM

Title: Mass Air Harness question....
Post by: vinnietbird on April 16, 2007, 07:20:05 AM
I saw a Harness conversion kit for Mass Air on E-Bay.It has the wires,instructions,and I have to supply the computer and Mass Air Meter.My question is,when installing Mass Air on our cars,is it exactly like doing a Stang?Or,are there a few differences between the two as far as the wiring for Mass Air would go?
Title: Mass Air Harness question....
Post by: V8Demon on April 16, 2007, 08:56:59 AM
Pretty much the same.  As per Coolcats:

PROCEDURE & NOTES

Quote
With the mass air computer you will need to reroute 2 wires in the wiring harness that goes to the computer. This controls the open and closing of the Thermactor air system, driven by the air pump. Fresh air is directed into the cylinder heads and the exhaust system for cleaner burning. If the system does not operate correctly, you may experience hesitation and increased emissions. There are 60 pin locations in the stock EEC-IV computer harness. You need to switch #51 to position #38, and #11 to position #32. The reason you need to switch the wires is due to the differences between the stock Cougar and the stock Mustang computers and harnesses.

You may also need to run a new wire to the fuel pump relay. In the Mustang, there is a secondary fuel pump monitor wire that runs from pin #19 on the computer to the fuel pump relay. It's basically a double-check to make sure there is sufficient power running to the fuel pump. If you do not run the wire you will get a code 95 (secondary fuel pump failure) when a computer (EEC) test is performed. It doesn't mean your fuel pump isn't running or working properly, just that the back-up check doesn't acknowledge it. It's up to you whether or not to run this wire. 
Title: Mass Air Harness question....
Post by: 1WLD BRD on April 16, 2007, 09:20:49 AM
I posted a colour diagram of where the wires should go awhile ago too.
Title: Mass Air Harness question....
Post by: Kitz Kat on April 16, 2007, 03:03:08 PM
Vinnie just take the plug from a yard with enough wire to splice into it,probably free and no shipping.
Title: Mass Air Harness question....
Post by: vinnietbird on April 16, 2007, 03:07:29 PM
Won't a Stang harness just swap right in with no mods at all,then all I need is the Meter and computer?
Title: Mass Air Harness question....
Post by: 1WLD BRD on April 16, 2007, 03:17:05 PM
no.  The tbird wiring is different.
Title: Mass Air Harness question....
Post by: Kitz Kat on April 16, 2007, 03:23:52 PM
Where is that diagrahm,I thougt I saved it but couldn't find it.That was a good one.
Title: Mass Air Harness question....
Post by: vinnietbird on April 16, 2007, 03:57:39 PM
I'll probably buy the kit I saw on Ebay.it has the plug with wires and instructions.If anyone has a nice accurate wiring diagram,shoot it to me.
Title: Mass Air Harness question....
Post by: Kitz Kat on April 16, 2007, 04:08:04 PM
The hardest thing is gettin slack on the computer wiring to make a good connection.
Title: Mass Air Harness question....
Post by: daboss351 on April 16, 2007, 04:16:38 PM
buy the kit you said i don't need has everything!
Title: Mass Air Harness question....
Post by: vinnietbird on April 16, 2007, 04:29:21 PM
I can buy the computer,Mass Air meter and wiring kit for less.That kit is a little over 120.00,but it'll climb higher before it's over.Those kits are not cheap at all.Plus,I have friends who have salvage yards.I'll go there and load up on what i need for cheap.
Title: Mass Air Harness question....
Post by: daboss351 on April 16, 2007, 04:31:26 PM
well then get 2 of each!
Title: Mass Air Harness question....
Post by: CougarSE on April 16, 2007, 04:47:08 PM
The only mustang harness that would plug in would be an 88 harness.. But its not mass air.
Title: Mass Air Harness question....
Post by: Kitz Kat on April 16, 2007, 04:52:36 PM
Vinnie emailed you the wireing from 1wld brd.
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