My 2b Sierra 2.0 DOHC EFI, isn’t running properly hunts really badly at idle I have to keep my foot slightly on the revs at lights or feels like it’s going to cut out, standard Ford ecu fitted, bottoms out at just under 80mph, any ideas welcome…….. I don’t want to spend mad money as I’m planning a engine conversion for winter 

If it's similar to the pinto, it's probably caused by the the idle air control valve being stuck - try removing it and cleaning it out as a first step.

If that doesn’t clear it and it’s running very rich check the map sensor.

Thanks for the replies…. I’ll try both ideas this even, hopefully it will sort it out

I think this is the same system as the pinto EFI. If you search EFI on this forum you will find how I solved issues. 

Thanks I’m going to have a good read now 

Edited June 8, 20215 yr by shaun_tomo88