Computer Questions

Gnwdad · Feb 22, 2009

I have searched the threads and read many on computers. When I bought my car ('90 Gt) it would not run, after several test the computer failed. I barrowed a CW3 computer that has a program on it, but I will have to returned it in a month or so. The computer that was in my car is an A9P or AP9, can I sent it off and have it repaired and a program added to it? If so who should I send it to and what type of program? any of my local auto parts stores can get me a computer for $100 to $150, should I just go that route. It will not be the A9P from the auto parts stores though.

93 LX · Feb 22, 2009

head to the boneyard i think i paid 20 for the ecc in my 86..

Gnwdad · Feb 22, 2009

I went to all the bone yards here in my area, I had a u pull yard to a search and they only showed 3 nationwide.

93 LX · Feb 22, 2009

did you try ppi?
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HISSIN50 · Feb 22, 2009

The A9* series is not flashable. If there's a 'tune' on it, it's an interface on the J3 port.

You can get used EEC's off the classifieds, etc, or the reman'd computer from the parts store should be fine.

stang&2Birds · Feb 22, 2009

93 LX said:
head to the boneyard i think i paid 20 for the ecc in my 86..

That's because it's an SD computer. No one wants them.

Gnwdad said:
The computer that was in my car is an A9P or AP9,

So, that means that you have an automatic Stang, right?
You can get a "rebuilt" from the parts store (most "rebuilt EECs" are just checked to see if they work, if not, they get junked), get one from the classifieds, get one form ebay, get one from your local junk yard, or get a used one from one of the many junkyards on car-part.com ( Car-Part.com--Used Auto Parts Market ). Note: No junkyard accepts returns on electrical parts!

Just make sure you get an A9P. An EEC for a manual will work, but it'll also put and added strain on your torque converter, tranny, etc.

WARNING! If you order one from a place listed on car-part.com, make SURE they list the part number and/or if it's from an auto/manual. You're safer if they list the part number. Don't forget, we're talking about cars that are often modified and have replacement parts! I once got a pair of lowered Eibach springs from a place when I wanted stock GT springs from an auto.

Gnwdad · Feb 22, 2009

Thanks guys

vristang · Feb 23, 2009

stang&2Birds said:
Just make sure you get an A9P. An EEC for a manual will work, but it'll also put and added strain on your torque converter, tranny, etc.

Joe,
would you mind elaborating on this?

There's a lot of guys interchanging the A9L with the A9P out there....

jason

Cobra912 · Feb 23, 2009

or an A9S which is what I am running.........

stang&2Birds · Feb 23, 2009

vristang said:
Joe,
would you mind elaborating on this?

There's a lot of guys interchanging the A9L with the A9P out there....

jason

The A9L has a higher idle speed, maintains a "high" idle speed during slowing down (to prevent stalling), and has different timing during shifts.

All that adds up to more "strain" on an automatic (torque converter, clutches, etc). Will people notice it? I doubt it. If the tranny dies 20K miles earlier, who would really notice, or even know! Especially on a 15-25 year old car.

I'm just saying that since he's going to pay and get an EEC, get the correct one.

If you look at all of the maps between the A9P and the A9L, you'll see minor differences. Clearly, Ford thought those differences were important enough to do an independent code-base, testing, and product code.

03Stangr · Feb 27, 2009

Gnwdad said:
I have searched the threads and read many on computers. When I bought my car ('90 Gt) it would not run, after several test the computer failed. I barrowed a CW3 computer that has a program on it, but I will have to returned it in a month or so. The computer that was in my car is an A9P or AP9, can I sent it off and have it repaired and a program added to it? If so who should I send it to and what type of program? any of my local auto parts stores can get me a computer for $100 to $150, should I just go that route. It will not be the A9P from the auto parts stores though.

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