The Miracle
New Member
- Joined
- Oct 2, 2020
- Messages
- 9
- Reaction score
- 1
- Points
- 3
- Location
- North Georgia
- Vehicle Year
- 1989
- Make / Model
- 2.9 4X4
- Transmission
- Automatic
The Ranger will run pretty well with the Spout connector undone, but misfires grossly when the spout signal is present. I ran new wires for the pip signal and spout signal from the TFI to the computer. In doing this I am able to backprobe it while its running.
I would think that if it runs well with no spout, the TFI is doing ok. With spout out, the computer is sending out a return frequency the same as the pip input frequency. Both increase frequency similarly when the pedal is pressed down a bit.
The last time this happened, I replaced the computer with a used unit and it ran great for about a year, after swapping the TFI with a cheapy. It did run great with the cheapy. Opens up a can of worms though, as in if its done that again, what keeps killing my computers?
I suppose my question is, should I venture to replace my TFI unit first? Or just bite it and get yet another computer.
Third option I guess would be to leave spout undone and just drive it around. Mostly using it for dump runs and in town hauling if need be.
I would think that if it runs well with no spout, the TFI is doing ok. With spout out, the computer is sending out a return frequency the same as the pip input frequency. Both increase frequency similarly when the pedal is pressed down a bit.
The last time this happened, I replaced the computer with a used unit and it ran great for about a year, after swapping the TFI with a cheapy. It did run great with the cheapy. Opens up a can of worms though, as in if its done that again, what keeps killing my computers?
I suppose my question is, should I venture to replace my TFI unit first? Or just bite it and get yet another computer.
Third option I guess would be to leave spout undone and just drive it around. Mostly using it for dump runs and in town hauling if need be.