Question about Cars & Trucks
The O2 sensors are in the exhaust pipes.
The problem could be a vac leak, or a dirty idle air control valve.
Posted on Jan 10, 2013
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Posted on Jan 02, 2017
SOURCE: I have a 1999 oldsmobile
fuel pressure regulator on the fuel rail is probably it or the egr valve is stuck open allowing burnt fuel to flood the intake, im leaning towards the fuel pressure regulator because the o2sensor is probably reading rich or if its reading lean then i would choose the egr valve . good luck
Posted on Aug 26, 2008
SOURCE: My Subaru?
I would say that the sensor may be bad the only other thing that i can think of is that the PCM lost its idle settings. then it is trying to relearn the idle setting and adjusting for the air sensor and/or the O2 sensor.
Posted on Oct 11, 2008
Remove it and clean with some carb cleaner and a Q tip. Be careful with it so you don't do any damage. 9 of 10 times this will get you running again! Since signal from there is variable low voltage, you cant really bypass it!
Posted on Feb 16, 2009
Bad connection at spark plug and wires or coil pack. Possible a plug got cracked on the install. Possibly the wires were installed incorrectly.
Posted on Aug 05, 2009
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