Need Help On Computer ID 86 Stang With MAF Convt

chadjones99 · September 9th, 2006, 01:10 AM

Hello, I have a computer question
I have a 86 mustang that has been converted to MAF and I have a dead wire on the distributor plug wire that controllers the timing. I have trace wire back to computer in car and wire is good.
so I may have a back computer. car runs but will not control timing I have to set it manual which means it runs good full out but does not want to run at cruise and has a bad idle .. anyway I have 2 computers the one in the car is
EEC-IV SFI-MA12A
F3zf-12a650-eb D3D1

on it. my other computer I got off of eBay, by the way it will not start the car so I don't know if its dead or just for maybe the real 86 speed density none MAF system ? or other here are its #'s
EEC-IV EFI sd20a
E8tf-12a650-as2c g 8RB
I see that one of them say's SFI and the other has EFI on it. what does that mean ?
and does anyone know what the voltage out put on the wire should be at idle so I can use that for testing ? at the plug ?
thanks
chad

chadjones99 · September 9th, 2006, 02:18 AM

ok now the dam thing is working ? 6.5 volts running at sput and 12 when not running with keys on ? must have been loose somewere ?

September 9th, 2006, 01:10 AM	#1
chadjones99 Regular Join Date: Aug 2006 Location: Tonopah,az Posts: 86 iTrader: 0 reviews	Need Help On Computer ID 86 Stang With MAF Convt Hello, I have a computer question I have a 86 mustang that has been converted to MAF and I have a dead wire on the distributor plug wire that controllers the timing. I have trace wire back to computer in car and wire is good. so I may have a back computer. car runs but will not control timing I have to set it manual which means it runs good full out but does not want to run at cruise and has a bad idle .. anyway I have 2 computers the one in the car is EEC-IV SFI-MA12A F3zf-12a650-eb D3D1 on it. my other computer I got off of eBay, by the way it will not start the car so I don't know if its dead or just for maybe the real 86 speed density none MAF system ? or other here are its #'s EEC-IV EFI sd20a E8tf-12a650-as2c g 8RB I see that one of them say's SFI and the other has EFI on it. what does that mean ? and does anyone know what the voltage out put on the wire should be at idle so I can use that for testing ? at the plug ? thanks chad __________________ 1986 stang ,Edelbrook intake, aluminum heads, E303 cam ,70 MM throttle body ,24lb injectors ,373 gears , 10:1 pistons set up,no cats , flowmaster mufflers , short shifter , 255 fuel pump , smog pump delete , A/C delete , Aluminum Radiator , MAF convertion

September 9th, 2006, 02:18 AM	#2
chadjones99 Regular Join Date: Aug 2006 Location: Tonopah,az Posts: 86 iTrader: 0 reviews	ok now the dam thing is working ? 6.5 volts running at sput and 12 when not running with keys on ? must have been loose somewere ? __________________ 1986 stang ,Edelbrook intake, aluminum heads, E303 cam ,70 MM throttle body ,24lb injectors ,373 gears , 10:1 pistons set up,no cats , flowmaster mufflers , short shifter , 255 fuel pump , smog pump delete , A/C delete , Aluminum Radiator , MAF convertion

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