i drive a 1986 3.9l I6 1bbl carb. f-150. where is the EEC-IV engine computer located at and how do i access it to read the codes?

 

Im might be wrong, but if its carburated then it shouldn't have a computer. I thought EEC-IV was for fuel injection.

 

The EEC-IV or TFI-IV systems are the models with the feedback carburetor.

 

The EEC-IV / TFI-IV system was for both EFI and Feedback Carb systems within the years 1984-1987 etc... after 1988 it was EFI only etc...

Feedback Carb Systems 1980-1983 used the EEC-III / DS-III or the MCU / DS-II system on the pickups.

EEC-I and EEC-II were for cars "pintos etc.." and started in 1978.

 

You need these plug

They are located on the passenger side fender in the engine compartment.

 

does the code reader plug into these?

 

yes. Theres 2 single plugs. Mine uses the green wire.

 

where can i pick up a code reader? and does it come with descriptions of what the codes mean?

 

Autozone has them for about 35 bucks. Yes it comes with a book that explains the KOEO and KOER tests. with all the codes.

 

awesome thanks very much

 

Or on the drivers side inner fender, depending on year.

 

His is an '86. Same year as mine.

 

Well, being that I am a chevy guy, I guess I got told huh? I had no idea a thing such as a feedback carb even existed! Did chevy's ever have a carb similar to this feedback carb?

 

AutoZone may or may not have the reader. The ones around here do not carry them anymore for anything less than the newer systems. But if you do a search on here you"ll find a writeup on how to read them using a hot wire finder. It works good. Check on the Inline 6 forum on here.
Keith

 

i found a digital readout one on amazon for $20. advanced had one in stock but it was not digital and was $10 more