1986 Ranger 2.9L V6 EFI 5spd. Manual w/ gasp/buck/power drop problem: Searched intensely for my code scanner. Bought another one. Ran tests. (KOEO) Key On/Engine Off/: Got codes #22 & #67… Fault #22: “MAP or BARO sensor out of range”. Is this a fault diagnosis or testing snafu?… Fault #67: A/C compressor clutch switch fault. Big whoop. A/C went to its maker long ago. Continuous Memory test result: Fault #63: Throttle Position circuit fault, below minimum voltage. I did an engine running voltage test of TP sensor before I bought the new code reader. Red wire (Battery voltage?): 4.97 volts Center wire: 0.02 volts Top wire: At idle speed: 0.94 volts At 2200 RPM in neutral: 1.30 volts At Kick throttle wide open momentarily: Rises up to 4.0 - 5.0 volts at max rev.I may have middle and top wire readings swapped: am remembering from hours ago. Replaced MAP sensor some years ago. Still looks clean. Question if MAP sensor fault reading is old memory in computer from previous code scanner reading. Vehicle gas tank frequently run near empty, especially when CA gas prices were $4.69A few months ago. Metal appearing fuel filter in frame rail below Brake Master CylinderWas replaced between Jan. and May 2007. Thanks folks for any advice to this wordy post.

 

Hi Sonora,

It looks like you are fairly new to FTE. At the same time, referring to your other post, you know how to add additional information to a thread you have started. Why didn't you add this information to that thread rather than start this new one?

Continuing the one thread makes it easier for the rest of us to get all of the relevant information and to respond to you in a way that is most helpful.

Just something for you to keep in mind as we go along.

Did you clear the ECM memory after you replaced the MAP sensor. Maybe it would be a good idea to clear the memory and run your tests again. To clear the memory, disconnect the battery for a while and then hook it back up. Good luck.

 

Roger on that, Michigan66. thanks.