Well I swapped in an H.O. out of a 92 mustang with 90,000 miles on the odometer and got the computer online and swapped the MAP sensor on monday so i could drive it. Here are my issues:
1. The dipstick tube doesnt want to stay in, it had BBK headers so the boltwith the stud isnt there for the tube to mount to and it moves around alot. Well i went to check my oil today and the dipstick broke off right below the full mark. I dont know how this would happen or Why? it was there when i put the oil in before i started it for the first time and after that when i checked the oil 2 or 3 times over the last week
2. I dont know why but it seems underpowered, it doesnt smoke or make any abnormal noises other than a small exhaust leak on the passenger side header(I think i blew out the gasket). The car is an Auto with 2.73 rear gears but it just seems like it is underpowered though it could be me expecting too much out of the swap. I put on a Summit 2.5" off road H pipe and Summit Turbo lers with no tailpipes yet(it sounds good when idling and when accelerating :D though it gets loud when it resonates through the car without the tailpipes) Any suggestions or advice is appreciated Thanks
Did you swap the car to mass air?
92 mustangs ran with factory mass air. Our cars did not.
What computer did you put in? If it was a 92 stang computer, it is mass air. This means that you would have to install the mass air sensor/meter along the air intake tube with the correct harness (since it doesn't exist on your car from the factory) and you would have had to relocate a couple pins on the harness at the computer.
If you want to keep the car speed density, you need to get a speed density H.O. computer from an 88 or older stang or one from a Lincoln Mark VII.
If this doesn't make sense, let me know. It's hard to explain without a lot of detail.
Here's a link that might help if this is your problem.
http://www.coolcats.net/tech/advanced/massair.html (http://"http://www.coolcats.net/tech/advanced/massair.html")
Well the computer i got was supposedly from an 88 Mustang GT 5 speed, the code on it was D3D i checked on fordfuelinjection.com and it doesnt really say much about it. I know it was mass air in the Stang and the owner had an upgraded MAF sensor, headers, an X pipe, and the underdrive pulleys as far as the mods to the Stang that i know of, based on what i saw of the car when i was at the junkyard. I thought maybe they had bumped the timing so i ran some 93 octane but it didnt make any difference. Thanks for the reply
Speed density computer.
The computer you have should be speed density if it's from an 88 stang.
You might also take a look to be sure you have 19# injectors. If he upgraded the MAF sensor, it may be for like 24# so something like that may be on the car. If this is the case, it could be sending too much fuel. Do you know of any other possible engine mods?
It sounds like the guy who had the stang made a few modifications and maybe he did something with the heads or upgraded the cam as well.
If these things are the case, the car will be sluggish unless you convert to mass air.
You could also check your fuel pressure to be sure it's getting enough fuel and not starving when you step on it.
Of course I'm sure the 2.73s have something to do with it.
If it's speed densety then you could mount five MAFs and it won't make any difference...
A S/D EEC desn't know a MAF from a brake rotor...
Be sure the timing is OK, HO's generally like approx 13*-14* advance, also be sure the timing is advancing to 30+* when the sprout plug is reinserted...
That I know but my point was that maybe the motor has injectors other than 19# if the guy who had it before him upgraded the MAF.
I didn't think you could efficiently run say 24# injectors on a speed density setup unless you got a adjustable FPR and choked it down a good bit.
The car may have 19#s on it but it's just something to check. I haven't seen too many mustang guys upgrade their MAF without upgrading the injectors as well. Maybe it was just a larger MAF that was still calibrated for 19# injectors. If that is the case then he has the 19#s and that is one possibility to cross off the list.
How can i be sure what size the injectors are? They are an orangish color but i dont see any markings on them. As far as other mods I dont really know. I know they are cast iron heads and the exhaust ports didnt look like they had anything done to them. the intake is the stock HO intake the only thing i dont really know for sure is the internals. Thanks for the help
Orange, yes you have 19# injectors so you're good there.
Well I just went and pulled codes from the ECU and based on what is on the fordfuelinjection.com website the codes i got with KOEO were:
81 82 and 95
The CM codes were:
22 34 66 and 95
With the KOER
I got 98 and 66 (i think)
I have the printout of what the site says the codes are and I have no idea what the TOT sensor(code 66) is and why it says there is a fuel pump circuit failure (code 95)
I will try to get the ford "flow charts" for the codes from work tomorrow. any other suggestions are appreciated
For the code 95 likely you have no wire in the harness to send F/P voltage back to the EEC so it throws a code... Interesting, I didn't know the S/D EECs even has a fuel pump monitor, but thats the first D3D i've seen as well... The 81 & 82 are air management problems (TAB & TAD solenoids)... Usually its the Mass Air EECs that have these three codes after a swap...
Code 66 can also be...MAF sensor went below 0.4 volts during the last 80 warm-up cycles.
Code 89 Hard fault present. (likely because the EEC cannot find the MAF meter)
You have a Mass Air EEC... That's the reason for all these codes...
Would the car run with a mass air EEC and no MAF sensor? I have been driving it to get to work and back for the last week and a half(unfortunately i dont have another car on the road right now) and it hasnt really given me much trouble, other than the ignition switch falling apart on me:flame: when i pulled the bottom steering column cover off to find out why it wouldnt stay running after i started it without hitting the steering column, it kinda lopes at idle sometimes and doesnt really seem to run as smoothly as it should while going down the road it will hesitate or kinda stumble sometimes. Thanks for the help
You know I'm having ho problems right now too. Bitch just wont listen!
Yea they'll run without the air meter and actually not real bad... The EEC has backup programming to fall back on if there is a sensor failure...
Looks like you have a choice, find a meter and some wiring, or locate a S/D computer...
One last thought, I assume you have a vaccum line on the MAP??? If it's Mass Air it will run about the same(maybe better) without the vaccum, if it goes pig rich then it is a S/D EEC...
:rollin: Man do I know what that's like!
Well i just went and disconnected the vacuum line to the Map sensor and the idle smoothed right out and it runs much smoother while driving than it does with the line hooked up. The exhaust didnt smell rich or blow black smoke. So how can i be sure this is a Mass Air EEC and not a S/D EEC? Does this test prove it is a Mass Air EEC? It looks like i might be getting a MAF sensor and the harness in the near future. Thanks again for the help
If it idles good without vaccum on the MAP(actually it's a BP in a MA setup) and without burning your eyes or blowing black smoke, its definatly a Mass Air EEC(or one really screwed up SD computer)
Ya done got lucky ...
Well I got the information off the sticker on the EEC and this is what it says:
EEC-IV SFI-MA12A F3ZF-12A650-EA 61SM12AF09 5686 -2 3D20
And the D3D in bold.
Based on what you are saying the car did idle better and wasnt blowing any black smoke or smelling rich. Looking on cool cats it does seem like this is a Mass air EEC if i am interpreting the numbers right. So now all i have to do is get the Mass Air stuff. Thanks for all the help.
The F3 portion of the pt# indicates its a '93... I'm 99% sure the SFI-MA12 indicates its Mass Air(the same is on my MA EECs)... 3D20 is a actual build date which is Apr 20 '93.
With it being a '93 Mustang EEC it HAS to be Mass Air...
Glad I could help... we've both learned something...
To add a little more to this... Here is some info from Ford Fuel Injection site...
D3D1 5.0 89-93 Mustang MAF / Manual (see note 1)
Some of the EECs apparently got a tweek in their programming and had a number added to the code...
For instance they also list a C3W and a C3W1(which I have). Why they really don't have any info on the D3D I dunno..:dunno:
Now I'll really muddy the water... Likely the engine will run stronger on a '87-'88 SD Stang EEC than it will on the MA using the stock MAF(this was proven 17 years ago when the Stang rags, Super Ford, etc couldn't get as fast times out of a '89 as they did '87-'88s. Plus I tried MA on a '86 with the same results). If you don't plan on mods it may be the way to go. But then the MA setup will likely get a little better gas milage..