WTF +25 ltrim 1 side
WTF +25 ltrim 1 side 
Best guess is an intake or exhaust leak on that side incorrectly reading higher o2 at the sensor (and dumping in more fuel), or a bad o2 sensor, or burned o2 wires from exhaust.
Swap O2's and see if the problem changes sides. To check for intake leaks, with the car running carefully spray a little carb cleaner around the intake to see if the idle rises/stumbles.
Rob (Bad30th)
Swap O2's and see if the problem changes sides. To check for intake leaks, with the car running carefully spray a little carb cleaner around the intake to see if the idle rises/stumbles.
Rob (Bad30th)
Best guess is an intake or exhaust leak on that side incorrectly reading higher o2 at the sensor (and dumping in more fuel), or a bad o2 sensor, or burned o2 wires from exhaust.
Swap O2's and see if the problem changes sides. To check for intake leaks, with the car running carefully spray a little carb cleaner around the intake to see if the idle rises/stumbles.
Rob (Bad30th)
Swap O2's and see if the problem changes sides. To check for intake leaks, with the car running carefully spray a little carb cleaner around the intake to see if the idle rises/stumbles.
Rob (Bad30th)
Well stated!
For it to be that whacked and only on a single side
says O2 sensor or a total misfire on at least one
cylinder blowing a lot of air into the pipe. Look at
the sensor voltage for signs of life, stuck at dead
zero or at approx 450mV indicates a fault, bouncing
but very low voltage indicates mixture or sensed-
mixture (e.g. air shoot-through) problems.
says O2 sensor or a total misfire on at least one
cylinder blowing a lot of air into the pipe. Look at
the sensor voltage for signs of life, stuck at dead
zero or at approx 450mV indicates a fault, bouncing
but very low voltage indicates mixture or sensed-
mixture (e.g. air shoot-through) problems.
