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Hi, guys. I have a 19 93 4F 155.0 I have a laundry list of codes. The truck will idle if I keep it alive. I swapped out the map. Sensor injectors are 2 years old. Oh, 2 sensors are new, but won't stay idling. We'll respond to throttle input and rev up. The code that I have are TPS out of range map. Sensor out of range fuel system fault. Egr inefficient flow. I have a TPS in the box, but I heard you have to calibrate it to put change it.. i am testing these codes key on engine off.
Just put the tps on if you have a new one. Start by checking all wiring/grounds. Remove them and clean them and where they attach to the body/chassis. All of that, my guess you either have a bad wiring problem/computer problem or bad ground. Possibly all of the above. Did you buy it that way or did it just start happening?
What is that? It seems like you didn’t test the sensors before replacing them.
Originally Posted by 90project5.0
Just put the tps on if you have a new one. Start by checking all wiring/grounds. Remove them and clean them and where they attach to the body/chassis. All of that, my guess you either have a bad wiring problem/computer problem or bad ground. Possibly all of the above. Did you buy it that way or did it just start happening?
Why would you suggest replacing the TPS? I’d be more inclined to go with your other thought of a bad computer or the wrong computer since a 1993(?) should have three digit fault codes.
I was more of telling him that he didn’t have to bench dial it. He already had one suggesting he was going to anyways. As for the actual vehicle, I just guessed…
