WTF +25 ltrim 1 side
10-13-2007, 02:20 AM
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WTF +25 ltrim 1 side My ltrim shows 25 constant on bank 1 from idle up to WOT. What gives? And all of a sudden 120% inj duty cycle on same bank. HELP?
10-13-2007, 09:26 AM
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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)
10-14-2007, 10:46 PM
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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!
10-15-2007, 09:12 AM
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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.
