Skip to main content ↑ ↓
Topic: EFI to Carbed (Read 3739 times) previous topic - next topic

EFI to Carbed

ok i have been doing this and that with my bird for 2 years now and im sick of it i drive the car maybe 50 miles a month so im not worried about the gas that efi will save me, and i like the clean engine bay of a carburetor car anyways. but my question is that i was reading that aftermarket carbs wont work with a ford aod tranny is this true and why?

EFI to Carbed

Reply #1 –
The AOD has the throttle valve cable attached at the throttle body.  You can make it work with a carb though.  Here's some articles.

http://www.shockley.net/Holley-AOD.asp 

http://www.jason.fletcher.net/tech/efi-carb/efi-carb.htm

I have also been thinking about doing this swap, but everyone I talk to always say that I'm crazy for wanting to.  I do really want the clean engine bay look though.
Foxless :(

EFI to Carbed

Reply #2 –
To each his own, but you'll have to pry my EFI from my cold dead fingers...

I didn't touch a FI engine till I was 43(1993, 16 years ago), never goin' back to a carb... OK there is a small lie in that statement, I ran a diesel Olds (direct fuel injection) from '88-'93...

EFI to Carbed

Reply #3 –
If something isnt set right the EFI doesnt save you gas.  I burnt almost half a tank to go 84 miles. Now tell me its cheaper then a carb. Honestly though I know once it's all worked out right it'll do just fine.

I would have to agree that I wouldnt trade it for anything either. The ECU from what Ive understood adjusts stuff as you change things. Since appearently I suck at fine tuning things, this is perfect for me. :D
87 T-bird two tone diarrhea color. 5.0 converted with AOD.  GONE BUT NOT FORGOTTEN
 
94 Lincoln Towncar, Dark Metallic Green, 4.6L AOD
SOLD!!!!
 
99 Mercury Cougar. V6 MTX75 Trans. CURRENT PROJECT DAILY DRIVER.

EFI to Carbed

Reply #4 –
Quote from: TurboCoupe50
OK there is a small lie in that statement


Actually there are three lies in that statement...

Another is the old Cobra Jet is carbed and will remain so... anybody see the other one???

EFI to Carbed

Reply #5 –
1993 to 2006 is only 13 years?
87 T-bird two tone diarrhea color. 5.0 converted with AOD.  GONE BUT NOT FORGOTTEN
 
94 Lincoln Towncar, Dark Metallic Green, 4.6L AOD
SOLD!!!!
 
99 Mercury Cougar. V6 MTX75 Trans. CURRENT PROJECT DAILY DRIVER.
 

EFI to Carbed

Reply #6 –
Well mine is nickel and diming me to death because it as never ran right sense I started this whole project 2 years ago. im just to the point where i dont know if its not running right because of the efi or something is wrong with my setup for my cam and timing or something else. and at the start of this whole thing i wanted to go carbed but i was talked out of it because of the gas mileage efi would save me but i have only drove the car maybe 2000 miles in the 2 years i have had it. and im getting 10 miles a gallon right now.

EFI to Carbed

Reply #7 –
Quote from: TurboCoupe50
Actually there are three lies in that statement...

Another is the old Cobra Jet is carbed and will remain so... anybody see the other one???


Quote from:
from my cold dead fingers...


your fingers arent cold and dead?  well they may be cold :dunno:

EFI to Carbed

Reply #8 –
Quote from: Master_xzavior
1993 to 2006 is only 13 years?


Bingo.... Guess I couldn't add when I posted ...

EFI to Carbed

Reply #9 –
Quote from: 88SptCoupe
Well mine is nickel and diming me to death because it as never ran right sense I started this whole project 2 years ago. im just to the point where i dont know if its not running right because of the efi or something is wrong with my setup for my cam and timing or something else. and at the start of this whole thing i wanted to go carbed but i was talked out of it because of the gas mileage efi would save me but i have only drove the car maybe 2000 miles in the 2 years i have had it. and im getting 10 miles a gallon right now.


Sorry for getting off topic...

Whats your setup and we'll talk about it... No more than you drive it a carb may be the right choice for you, but if you have other issues you're still chasing snakes.

EFI to Carbed

Reply #10 –
i took the techs of a mustang cam and got a cam with a lil more lift and duration. rebuilt mustang heads tho there was my first problem i put them in with stock pushrods and it sounded like a sewing michine so i took them out and found my pushrods were to short. by like a 1/4 i believe (its been a year) put them on i have a typhoon EFI Intake from professional products with a 65mm throttle body and of course the 19lbs injectors. my exhaust is 2 shorty headers with true duals. im running speed density, also the mustang computer

one of my problems is i got most of the parts off ebay so i dont know if what i got is right. the computer looked like somone took it apart and yea i dont know i never really trusted it from the start.

my problems are if i have it idleing at 600 rpm it will run for about 2-4 mins trying not to die before it does. it will stay running at 1k rpms idleing but then if you stand behind it you will just feel like you took a gas bath and you will stink. there is no low end power what so ever, tho if i get it out of first gear it runs fine just smells like gas where ever i go.

talk to a mechanic he got in it and i started it up first thing he said is this efi i was like yea he goes theres no way in hell this car should sound like this. my car shakes like its got a really extream cam in it and is carbed.

if you could help plz. also i dont mind if it goes off topic as long as it comes back every now and then

EFI to Carbed

Reply #11 –
as far as carbs i'm with Tom on this one..

i have had meny carb motors back in the day.. and i would never go back to a carb..the only way i would go back to a carb would be a N/A track only car.. or a twin screw dual quad show car setup..

i have a few questions

you said you have pushrod problems?

ok first what engine block are you useing? ie roller or non roller?

two what cam?  ie part number and is it a 302 cam or a 351W/HO302 cam

three what ecm are you useing mass air or speed density?
 
now other things like stock heads or aftermarket heads?

now on another note a rich condition can be caused by O2's,air charge temp sensor,mass air sensor.. and map sensor on speed density systems.. mass air systems on fords don't use a map.they use a BAP! if you did convert to mass air disconect the vacuum line to map and plug the hose.. but leave the wiring harness to the map conected..

Nick
Quote
there's only about a half a dozen man made objects that are herd by the human ear below 40Hz,a pipe organ,thunder,the space shuttle lifting off,a jet airplane taking off or landing,a large canon,an atomic bomb ignited in your back yard and the heat wave afterward oh wait you would be dead so you would'nt hear it scratch that!,and maybe beating your hear against a wall less then 40 times a second..rap music is'nt one of them!thats 40-60Hz@100+db the moving air is under 40Hz

EFI to Carbed

Reply #12 –
Check your codes too. EFI should spell out what you need.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

EFI to Carbed

Reply #13 –
You say its a Speed Densety EEC, they will NOT work with much more than the stock HO cam... Low vaccum will cause a rich, surging idle condition...  Do you have any idea how much vaccum the engine is making? A SD EEC won't idle without surging on less than approx 16" of manifold vac... If its borderline you may be able to increase the idle to 800/900 rpm to bring the vac up a bit...

Whats the three digit code on the computer???

EFI to Carbed

Reply #14 –
wow so a motor not making enough vacuum makes it rich? not to hijack the thread here but Im running rich as well and noticed I dont have much vacuum in my brake booster
87 T-bird two tone diarrhea color. 5.0 converted with AOD.  GONE BUT NOT FORGOTTEN
 
94 Lincoln Towncar, Dark Metallic Green, 4.6L AOD
SOLD!!!!
 
99 Mercury Cougar. V6 MTX75 Trans. CURRENT PROJECT DAILY DRIVER.