Still new engine problems... May have narrowed down to O2 sensors
08-04-2011, 10:24 AM
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Still new engine problems... May have narrowed down to O2 sensors Try to make this quick. Just rebuilt my new engine but when I step on the gas it almost dies. In neutral it revs fine. I decided to disconnect the O2 sensors even though there is no code for bad O2 sensors. It runs great!
So I bought one O2 sensor put it in one bank. Car ran like crap again. Then I swapped the old O2 sensor that was replaced by the new one over to the other header. Still ran like crap. So this is telling me that both went bad while not showing any codes and were working fine just before the new rebuild?!? Could there be something else that is causing the O2 sensors to act funny? Or do I really need to buy another O2 sensor for the other header?
So I bought one O2 sensor put it in one bank. Car ran like crap again. Then I swapped the old O2 sensor that was replaced by the new one over to the other header. Still ran like crap. So this is telling me that both went bad while not showing any codes and were working fine just before the new rebuild?!? Could there be something else that is causing the O2 sensors to act funny? Or do I really need to buy another O2 sensor for the other header?
08-04-2011, 10:27 PM
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Crap!!!! Now I've put two brand new O2 sensors in and still the same problem. Again I can disconnect them and the car runs fine but with the O2 sensors connected it falls on it's face when I try to accelerate.
Could a huge vacuum leak cause it to run like crap but run fine when disconnecting the O2 sensors?
Could a huge vacuum leak cause it to run like crap but run fine when disconnecting the O2 sensors?
