RaccoonJoe
NAXJA Forum User
- Location
- Fort Wayne, IN
OK. I've been dealing with some low fuel economy, as well as some sputtering/stalling issues. I think I've narrowed it down to a bad O2 sensor.
1st sensor tested would sit at 4.75 volts, and never move. Left the motor idle in Park for 20 minutes, still no movement.
I replaced this sensor with a spare I had (had originally came off my Jeep, with the old, cracked/broken exhaust manifold) Now, I've got some interesting results.
*due to time constraints, all testing with this second sensor was done on the open road. I've got "real-time" data. Using in-line splices, I ran 2 lead wires into the cab, and jumpered those to the test leads on my analog volt-meter*
Accelerating, my voltage would slowly climb to about 4.75 - 5 volts.
Rolling down the highway, foot off the gas, volts would shoot up to 5.
Coasting, (moving, but shifter in N), voltage would start at 3 or climb to 5
Cruising @ 55, voltage is rock solid @ 2.25
Cruising @ 60-65, voltage is between 2.75 and 3 volts.
Any ideas what this is telling me? Or is it just that the oxygen sensor is toast? I'd rather not throw money at this if I don't have to, as some medical bills have come due, and the paychecks have been a little short recently....(not to mention high gas prices coupled with low MPG)
1st sensor tested would sit at 4.75 volts, and never move. Left the motor idle in Park for 20 minutes, still no movement.
I replaced this sensor with a spare I had (had originally came off my Jeep, with the old, cracked/broken exhaust manifold) Now, I've got some interesting results.
*due to time constraints, all testing with this second sensor was done on the open road. I've got "real-time" data. Using in-line splices, I ran 2 lead wires into the cab, and jumpered those to the test leads on my analog volt-meter*
Accelerating, my voltage would slowly climb to about 4.75 - 5 volts.
Rolling down the highway, foot off the gas, volts would shoot up to 5.
Coasting, (moving, but shifter in N), voltage would start at 3 or climb to 5
Cruising @ 55, voltage is rock solid @ 2.25
Cruising @ 60-65, voltage is between 2.75 and 3 volts.
Any ideas what this is telling me? Or is it just that the oxygen sensor is toast? I'd rather not throw money at this if I don't have to, as some medical bills have come due, and the paychecks have been a little short recently....(not to mention high gas prices coupled with low MPG)