I have a 1991 f150 with a 5.8l. the truck will not start here are the knowns. (the truck runs,has a high idle)It will start if the fuel pumps cycle when the key is turned over.As of right now the pumps will not prime even if the pumps are on a jumper the injectors will not operate. Is this symptoms of a bad eec?

Try another ECU because i dont think this vehicle has a chipped key so another one from the scrapyard will work.Sounds like this could be the problem ,if it doesnt work then see if you can get plan renewal on it and get a nice little diesel van like a peugeot partner of similar,a small eco friendly vehicle.I have just driven a 4cyl 4.5litre diesel MAN 10ton truck over a 1000kms loaded one way with about 5 ton of load on it.cant be bad top speed of about 55mph well the speed limit is 100kms for a truck here in spain