no engine change when tps is unplugged?
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no engine change when tps is unplugged?
hey fellas, I got a 95 f150 5.0 maf and ive been battleing a rough idle dying situation. long story shot when I unplug the tps nothing changes. also when I take the vacuum line of the fuel pressure regulator the truck runs better. any ideas?
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yea I don't care about codes, I keep getting different ones evertime I scan it. im pretty sure I need a pcm. that's why my title says no engine change when tps unplugged and not rough idle problem. all I wanna know is if the idle should change with the tps unplugged and when it is if I hit the gas it accelerates normal
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No change when the TPS is unplugged means the computer is completely ignoring it which isn't good, either the sensor is totally fubar or the computer is.
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my guess is the computer, that's what I wanted to know. the previous owner has a superchips on it and it ran just like it does now, horrible and dies. found that took it off it was fine for 3 weeks and back to the same issue. took it out no bad capasitors but it does say remanufacterd on it, and it gets super hot even just resting on the wheel well while the trucks running. I just wanted to make sure it was that before dropping 200 for a pcm. all the junk yards by me just have non mass airflow or obd2 computers. thanks guys for your post very much appreciate it! GO FORD!!
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You can't swap a Speed Density PCM with a MAF version. The pin-outs for the injectors are completely different. You need a MAF computer from a truck with the same transmission. You could get away with using one from a different engine, 5.8L versus 5L, assuming your truck has an E4OD transmission. If you have a 4R70W then you need to stick with a 5L version.
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And if it's like a Fox body Stang, the O2 sensor harness needs to match the computer. A manual transmission computer needs the harness pinned one way, and the automatic transmission computer needs it pinned another way. It should be only one wire which needs to be moved, and it's pretty easy to do.
If you throw a manual computer into an automatic car (and quite possibly truck), the automatic-style wiring will feed voltage into the computer when the starter is cranking, and that will fry it. An automatic computer is said to be OK in a manual transmission vehicle, however.
I suspect that some of the trucks might be the same way.
If you throw a manual computer into an automatic car (and quite possibly truck), the automatic-style wiring will feed voltage into the computer when the starter is cranking, and that will fry it. An automatic computer is said to be OK in a manual transmission vehicle, however.
I suspect that some of the trucks might be the same way.
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