Caddynut Posted September 18, 2006 Report Share Posted September 18, 2006 Well, I am still working on my Seville and I know it is running REALLY RICH!! My next step is to check the O2 sensor (s). I know the on sensor is on the front exhaust manifold by the radiator, but is there one on the back manifold and anywhere else? Also.....if I remember right....isn't there a way to test these with an ohm meter before I go spending my paycheck on new sensors before I know they are bad? Thanks. 2008 BMW 328xi 2007 Chrysler Aspen 2001 Cadillac Seville STS 2000 Ford Ranger XLT1998 Mitsubishi Spyder Convertible 1996 Saturn SC-11991 Ford F-1501979 Chevrolet Caprice1968 Ford LTD1965 VW Beetle "Herbie The Love Bug Replica** 1961 VW Beetle Link to comment Share on other sites More sharing options...
Ranger Posted September 19, 2006 Report Share Posted September 19, 2006 Not positive, but I think there are 2 on the 4.9. They will set a DTC if they are bad. Unless you have a check engine light on with an O2 DTC, don't change them. Link to comment Share on other sites More sharing options...
Caddynut Posted September 19, 2006 Author Report Share Posted September 19, 2006 Thanks. I have a check engine light, but for the same code as my last post "right to left bank fueling difference" The car is running rich and I am trying to eliminate possibilities. Thanks for the info. 2008 BMW 328xi 2007 Chrysler Aspen 2001 Cadillac Seville STS 2000 Ford Ranger XLT1998 Mitsubishi Spyder Convertible 1996 Saturn SC-11991 Ford F-1501979 Chevrolet Caprice1968 Ford LTD1965 VW Beetle "Herbie The Love Bug Replica** 1961 VW Beetle Link to comment Share on other sites More sharing options...
Ranger Posted September 19, 2006 Report Share Posted September 19, 2006 That could be an O2 sensor I think. Check for a vacuum leak though. Anyone else agree? Link to comment Share on other sites More sharing options...
Dan Posted September 19, 2006 Report Share Posted September 19, 2006 The second O2 sensor is right behind the engine, it's on the pipe below the rear engine manifold. You can only get at it from under the car. Link to comment Share on other sites More sharing options...
Caddynut Posted September 25, 2006 Author Report Share Posted September 25, 2006 I dropped in 2 new O2 sensors this weekend and from what I can see "problem solved". The one on the front of the engine had a little bit of white ash on it and looked pretty normal. The O2 sensor on the back side was completely black and when I went to take it out....the shield on the outside of the sensor was almost all gone, so it couldn't have been working right. The service engine soon light is out and it is running smoother and better than it ever has. Thanks for the input. 2008 BMW 328xi 2007 Chrysler Aspen 2001 Cadillac Seville STS 2000 Ford Ranger XLT1998 Mitsubishi Spyder Convertible 1996 Saturn SC-11991 Ford F-1501979 Chevrolet Caprice1968 Ford LTD1965 VW Beetle "Herbie The Love Bug Replica** 1961 VW Beetle Link to comment Share on other sites More sharing options...
adallak Posted September 25, 2006 Report Share Posted September 25, 2006 I dropped in 2 new O2 sensors this weekend and from what I can see "problem solved". The one on the front of the engine had a little bit of white ash on it and looked pretty normal. The O2 sensor on the back side was completely black and when I went to take it out....the shield on the outside of the sensor was almost all gone, so it couldn't have been working right. The service engine soon light is out and it is running smoother and better than it ever has. Thanks for the input. So it was E046 code. Thanks for the followup. The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
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