Convert Auto V8 ECU to Manual - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Cobra Kid · 09-19-2003, 08:46

Greetings, I have an NC Fairlane 302 EFI engine for my Cobra which has an ECU and all other electric's for an Auto. Number on the ECU is 1DHA. Can anyone tell me what I need to do to convert it to run as a manual. Also, does anyone know what the number would be for a manual ECU of the same year or where I could get one. I believe the auto's had no BAP sensor and the manuals did and I have been told that I can use a MAP sensor off a 6cyl without connecting the vac as a BAP. I would like to know what mods I need to do to the ECU itself. Thanks in advance. Cheers

PigDog · 09-21-2003, 01:29

I think the ECU would be exactly the same as ithose V8's had a seperate transmission computer which was not integrated into the EEC. 302 EFI also uses a MAF not a MAP sensor so it's different to the 6cyl. The stock MAF is quite restrictive, 55mm i think.

Cobra Kid · 09-21-2003, 04:01

Thanks for the info, I presume by MAF you are talking about mass air flow. I believe that if you have a MAF, then you don't use a MAP or v/versa. I have a MAF and have been told by Ford that I also need the BAP, which could be a MAP from a 6cly without the vac hooked up which then just measures the barometric air preasure as does a BAP. Apparently, Manual's had the BAP and Auto's didn't. I don't know why. I have now managed to get myself the 6cyl MAP. What I realy need now is how to change the existing Auto computer to make it run correctly as a manual. My engine is 1992 (I think) NC fairlane. Also, does anyone know how to correctly identify the year of an engine without the VIN No of the car.? Thanks

NZ · 09-21-2003, 16:17

You'll find that EB1 V8's have a Bap Sensor, and it was deleted in EB2 As far as converting to manual the only wiring changes you need to do is fit a cruise cut off switchs on the clutch. Ive jut done an auto > manual conversion 2 days ago.

xafalcon · 09-22-2003, 01:20

Yep, my EB1 (auto) has a BAP, and my hotrod engine from an NC (May 92 auto) does not. XR9UTE suggested adding a BAP + wiring, which I will do when I get the chance. The computer codes I have are 1DGA = BAP, 1DHA = no BAP.

Good luck
Tris

Cobra Kid · 09-26-2003, 04:55

Hi, thanks to all for your reply's, however the more answers I get, the more questions come to mind. Do I need to install a clutch switch if I am not using the cruse control? Also, If I am using the 1DHA (Auto computer), do I still need to use a BAP, as the 1DHA never had the BAP in the first place. Perhaps I should just wire it up and see what happens without it. Why did the auto's not need it I wonder especially seeing they dropped it again soon after. On another subject, does anyone know how to correctly adjust the throttle position sensor. I presume it should read a certain resistance at a given throttle opening? Any info would be very helpful. Thanks again.

PigDog · 09-26-2003, 05:25

Try to get your TPS voltage up around 0.9 - .96v with the key-on and engine off and it should be good. If you go too far the ECU cracks it and starts dumping in too much fuel/timing.

Cobra Kid · 09-28-2003, 04:58

Thanks very much for this info, very helpfull and very much appreciated.