Ford EEC IV computer

Bench Racer · 12-26-2018, 08:15 PM

Guys I really appreciate the responses, I have helped my brother with his IHRA Super stocker with a Holley 650cfm 2bbl since the 1980's. and his NHRA GT SS with a Q-jet but when he went to EFI (Thank God the engine builder programs the car) I am only good for fuel or a converter or transmission swap lol. Due to Christmas, family time, and my profession as a paramedic (we don't get holidays) I have not had the hood up on the ranger to check vacuum, fuel pressure, block off the EGR, or give Kirk a call. While at work I did look at the ECM and it has a catch code of MOM2. When I googled this I got a hit on a ranger with a 3.0?? Maybe bad info or maybe mine had been reflashed and replaced. After Ed's comment on timing in courious about a Auto ECM. I think the 1991 ranger still used the A4LD automatic and I know it has a lockup clutch, other than that I think it is a "dumb" transmission don't rely on the computer to function, it may work with the c-4 transmission. I have done some research on the Quarter Horse chip and for my application it appeared it may be the best bang for the buck as I am looking drivability, fuel economy and performance vs max H.P. and E.T. Heck if the Automatic 2.3 ECM works and get some fuel mileage I'd be happy. If the current 15 mpg is all I can get with the 2.3 with a cam upgrade I might as well look for a 260, 289 or 302 with a distributor and a carb and stuff it in lol. Thanks again for the replys and happy new year. Don Jackson

12-26-2018, 08:15 PM	#11
Bench Racer Member Join Date: May 2002 Location: Green Creek (Tryon) North Carolina Posts: 330 Likes: 69 Liked 99 Times in 21 Posts	Re: Ford EEC IV computer Guys I really appreciate the responses, I have helped my brother with his IHRA Super stocker with a Holley 650cfm 2bbl since the 1980's. and his NHRA GT SS with a Q-jet but when he went to EFI (Thank God the engine builder programs the car) I am only good for fuel or a converter or transmission swap lol. Due to Christmas, family time, and my profession as a paramedic (we don't get holidays) I have not had the hood up on the ranger to check vacuum, fuel pressure, block off the EGR, or give Kirk a call. While at work I did look at the ECM and it has a catch code of MOM2. When I googled this I got a hit on a ranger with a 3.0?? Maybe bad info or maybe mine had been reflashed and replaced. After Ed's comment on timing in courious about a Auto ECM. I think the 1991 ranger still used the A4LD automatic and I know it has a lockup clutch, other than that I think it is a "dumb" transmission don't rely on the computer to function, it may work with the c-4 transmission. I have done some research on the Quarter Horse chip and for my application it appeared it may be the best bang for the buck as I am looking drivability, fuel economy and performance vs max H.P. and E.T. Heck if the Automatic 2.3 ECM works and get some fuel mileage I'd be happy. If the current 15 mpg is all I can get with the 2.3 with a cam upgrade I might as well look for a 260, 289 or 302 with a distributor and a carb and stuff it in lol. Thanks again for the replys and happy new year. Don Jackson