1999 ranger 3.0 flex fuel manual transmission

just got the truck has a rough idle but gets pretty smooth at 2000 rpm. shows no dtcs not even the p1000. did some checking on the scanner found a chart on what the values are supposed to be. I figured maybe the egr was slightly stuck open

maf reads 1.24 volts at idle
dpfe reads .92 at idle
maf reads 0.01 lbs/min (using autel) doesn't give grams/second. googled the conversion comes out to 4.5 grams/second. seems high to me
spark advance reads 21-23 degrees spec says 10-12 degrees at idle. probably have to figure why that's off
baro reads 146 hz
googled Dayton ohio how far above sea level we are. comes to 738 feet. 146 hz is for a reading of 4000 feet above sea level according to a chart I have. looking like a possible maf problem

fuel trims are around 5 at idle both long and short. don't really change with rpm.
the rear o2 sensor reads lean at idle due to the gasket leaking. around 50 mv but changes with rpm.

Definitely a low BARO hz reading, but I figure there'd be a fuel trim problem. I like that DPFE reading, though.

Any counts in Mode $06? They still used TID 53 on this year, if I remember right. Possible mechanical issue?

using autel they don't give you the counts just the percent. I looked in there and it has 0% except cylinder 6 which is only 3% misfire. ill hook the verus up to it, where it has better graphing than the ds708. on these systems can you current ramp the coil to see if one is shorting out intermittently?

cheryl hartkorn wrote: on these systems can you current ramp the coil to see if one is shorting out intermittently?

Absolutely, just grab the power wire at the coil.