Problem with my 2000 Olds Intrigue
3500 V6
Check engine light
codes = P0137
Crank sensor replaced approx 20,000 mile previously
tech = JK
question = Code reader gives P0137, what do I check next? I have been
warned not to jump to replace 02 sensor because it could be something
else. I have the normal set of tools such and a DVM.
JK:
This code is for low voltage on 02 sensor #2, post catalytic converter.
Several things can cause this condition.
1- A bad sensor
2- lean condition caused by vacuum leaks, low fuel pressure, inaccurate MAF (mass airflow
sensor)
3- poor fuel quality
4- possible inefficient cat. Converter, but this will usually give a different code.
A scanner to read data is really the key to diag. this code. The main test is to disconnect sensor,
ground the low reference circuit, and look and scanner data to verify voltage range. If passes,
then pcm and wiring are all good.
Some common areas of vacuum leak are at the throttle body gasket, PCV hose,
lower intake manifold gaskets.
Back
3500 V6
Check engine light
codes = P0137
Crank sensor replaced approx 20,000 mile previously
tech = JK
question = Code reader gives P0137, what do I check next? I have been
warned not to jump to replace 02 sensor because it could be something
else. I have the normal set of tools such and a DVM.
JK:
This code is for low voltage on 02 sensor #2, post catalytic converter.
Several things can cause this condition.
1- A bad sensor
2- lean condition caused by vacuum leaks, low fuel pressure, inaccurate MAF (mass airflow
sensor)
3- poor fuel quality
4- possible inefficient cat. Converter, but this will usually give a different code.
A scanner to read data is really the key to diag. this code. The main test is to disconnect sensor,
ground the low reference circuit, and look and scanner data to verify voltage range. If passes,
then pcm and wiring are all good.
Some common areas of vacuum leak are at the throttle body gasket, PCV hose,
lower intake manifold gaskets.
Back
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converter is going to have to be replaced. If no other codes, then that
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go at all never really dies out that much sometimes will start right back but
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Repair Help by Expert Oldsmobile Mechanics
Intrigue Check Engine Light For Catalytic Converter