4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

O2 Sensor

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Old Oct 15, 2006 | 02:44 PM
  #11  
Mark99GT's Avatar
Mark99GT
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Default RE: O2 Sensor

Yeah, my car stalls at less than 800 rpm if left to idle. At stop lights I have to rev it to 1000+ rpm to keep it running. It runs fine while driving though, actually runs great, just idles rough and eventually dies. As soon as I disconnect the battery, wait a few min and reconnect the problem is solved until the cel comes on again. I think it runs extremely rich when the cel is on. It seems like the fuel economy goes down and the exhaust smells HORRIBLE (not because there are no cats, I know its supposed to smell worse).
Old Oct 17, 2006 | 02:24 AM
  #12  
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memphissfinest
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Joined: May 2006
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From: Texas
Default RE: O2 Sensor

i changed out my O2 sensors that are near the headers for ones with a longer harness...can i use the ones i took out for the rear? or are the O2 sensors in the front and rear independent of one another?
Old Oct 17, 2006 | 05:04 AM
  #13  
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chris01gt
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Default RE: O2 Sensor

Same with me. When I bought my car, the damn O2 sensor light was on (cuz' of the H pipe also) and the dealership "fixed" it. 2 days later he check engine light came on again. By the way mempis, nice car, it looks familar
Old Oct 17, 2006 | 04:23 PM
  #14  
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memphissfinest
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From: Texas
Default RE: O2 Sensor

well i believe that the rear O2 sensors do affect performance because my gas mileage has now become very HORRIBLE. i can smell gas in the car strong, so i guess it is running very rich. my question still is, can i replace my passenger side rear O2 sensor using my passenger front O2 sensor takeoff? o and your car does look familiar . ill be posting new pics soon because it looks alot different now with the stripe kit, dd bullitts, side scoops, smoked headlights and grill delete.
Old Oct 17, 2006 | 05:19 PM
  #15  
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memphissfinest
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Default RE: O2 Sensor

anyone know?
Old Oct 18, 2006 | 01:54 AM
  #16  
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memphissfinest
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Default RE: O2 Sensor

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