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95 maf setup, were they sequential injection?

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jjona5
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Posts: 108
Joined: Tue May 10, 2016 10:49 am

95 maf setup, were they sequential injection?

Post #1 by jjona5 » Wed Dec 14, 2016 8:59 pm

So I did a search and didn't come up with anything good and I don't have a wiring schematic to run them down. Does anyone know if the OBD1 maf based 4.9l pcm/wiring run sequential injection?

thesameguy
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Posts: 687
Joined: Thu Jan 27, 2011 5:34 pm

Re: 95 maf setup, were they sequential injection?

Post #2 by thesameguy » Wed Dec 14, 2016 11:33 pm

I have heard some rumors of early production MAF-equipped cars that were still batch fire, but I don't believe it. According to Ford, all the MAF/EEC-V equipped 300s were SEFI.

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MechRick
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Location: Las Vegas, NV

Re: 95 maf setup, were they sequential injection?

Post #3 by MechRick » Sat Dec 24, 2016 1:42 pm

SEFI will have individual drivers for each injector. Of the two wires going to each injector, the VREF (+12v) wires will all be the same color. The driver wires (ground) in bank-fired systems will be 3 and 3 (3 injector wires one color, 3 injector wires another color). With SEFI, each injector will have a unique color code for the driver wires.

So, as confusing as I made that, you should be able to peek at the plugs/wires at the injectors or bulkhead connector to figure out what you have.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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