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Hello, Eddie here and I will do my best to help. did the check engine light come on when it wouldn't go past 20? Also, is this 4.9 straight 6? 302? or 351 engine? thank you.
Alright, Is it the original PCM by chance? if so, i would take it out, there is 4 screws that hold the top on, There are some big blue capacitors , and they leak out, and then contaminate the printed circuit board in the PCM. sounds like you've replaced all the common things. It also could be the cat stopped slam up. with that symptom, does it ever run hot?
Alright, this sounds like PCM, Have you tried another ignition module?
I follow you, on 94, I believe yours is back of drivers inner fender well. unplug the spout and see if it runs any better by chance. and pull that front o2 sensor out, see if it runs any better then, this exhaust system original? my 94 E150 was a brick in the converter fyi.
I have same set up 94 5.0 except E150.
Alright, sounds good.
Yes, you are allowed to follow you with any questions. Thanks.
Hello, We're you able to work on it any today? thanks.