8LD??
- Thread starter oldno7
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Yes, but if your car is an ado you will fry that EEC.
That is why we need more info on your car.
5 SPD you are good to go...but if you have an aod you will need an aod computer or a few manual harnesses to swap out
out of curiosity why will it fry if he has an aod? a9 computers do not matter if its a manual or not.
An auto computer in a manual has been proven to work fine...but a manual computer in an auto has been known to be problematic....trouble dumping codes because the A9L is looking for the neutral switch signal and running crazy rich to name a few.
gearheadboy
15 Year Member
My 88GT had the mass air conversion before I bought it. It had some issues idling and stinking etc..has an aftermarket cam, intake..etc..I did all the normal stuff to correct it with no go. Only codes I had were the AIR pump stuff cause it was deleted. I had that computer 88 Mass Air California. Just for something to try I replaced it with the first one I came across cheap which was the newer one for the Auto trans, not the A9L but the other one (sorry its late)..my car is a 5spd. It made a WORLD of difference. Idles better..no searching, stalling, stinking..nothing..was my old one bad? Dunno. Is this one better? ABSOLUTELY. You can buy an A9L and put it in an automatic car but before you install it do a search on here for the A9L and find out what pin at the computer needs to be changed around. If you have a 5spd either will work. I paid 100 bucks at a swap meet and lucked out with a good one. Also try autozone or advance..they are cheaper than you think.
Has to do with the routing of the nss. Ford for some reason sent it in and out of the o2 harness. Why? No idea. But your o2 harness has two wires for the nss init. Prob is ford pinned the harness different depending on aod or 5spd. I believe it's pin #30 which is the issue but not 100% sure on that
This is a prob because the swapped pins now send voltage back to the EEC on what used to be a ground wire. Power on a ground leads to problems
You can run an aod computer fine with a 5 spd, but a 5 spd comp on an car with aod wiring has been known to have issues
warriorpluto
Member
i just did a swap with the same cpu(8ld) but i have a c6 transmission in my car. i also have an a9p laying around. so i need to switch back to the a9p? or could i just get a manual o2 harness?
What was you car originally
You could do either. An 88-89 manual harness is what younwant, the newer ones changed a bit. There are four harnesses. 87-89 and 90-93 with one each for aod and t-5.
There is a good thread on corral.net. Search for
*
"Oxygen sensor Harnesses - Manual/Auto differences and year differences"
You could do either. An 88-89 manual harness is what younwant, the newer ones changed a bit. There are four harnesses. 87-89 and 90-93 with one each for aod and t-5.
There is a good thread on corral.net. Search for
*
"Oxygen sensor Harnesses - Manual/Auto differences and year differences"
stang&2Birds
Founding Member
Wow, great info! Thanks!
It shows why there are so many p****ing contests of if an auto and 5spd EEC are interchangeable.
I know that for my aod '86 gt, I can use an SD 5sp EEC with no problem.
And, I know the history of my '86 from the day that my best friend decided that he was going to custom order an '86 Stang. I even drove him to the dealership to pick up the car. I have every receipt for every thing done to the car (dealership only) until he sold it to me (it was still 100% stock, even had the air silencer, etc).
I also have 3 different FORD sources of wiring diagrams for my car. And, I know that there are minor differences in all three! It sucked when I was hunting down a main power wire issue (broke from being pinched) in my '86 T-bird! Seems like Ford couldn't even stay with one wiring standard for the main power harness for the '86 t-birds! Argg!!!!
BTW people can also find the thread with a Google search and using the "site" option. In Google, enter the following:
site:corral.net "Oxygen sensor Harnesses - Manual/Auto differences and year differences"
The admins here don't like linking to corral. I am a mod so I gotta follow their rules. What else can I do?
I think there is tons of good tech stuff over there that is of some use like that particular thread which I can't not post.It goes into detail over the difference in wiring and which pins are the issues with the o2 harness. Great thread for anyone here interested in the differences.
stang&2Birds
Founding Member
Yup, I know. That's why I have people to use Google.The admins here don't like linking to corral. I am a mod so I gotta follow their rules. What else can I do?
Plus, it gets people use to using Google to look up stuff, instead of making posts like "How do I put up a new screen-door?" on a car site.
warriorpluto
Member
my car is an 87. it was originally aod but when i bought the car the c6 was already in it. i want to go back with an aod. i just recently swapped a whole 88 cali mass air harness in my car and i have the 8ld. i just dont want to fry the ecu. so i guess i will put the a9p in it.
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