Discovery II Talk about the Land Rover Discovery II within.
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Old Jun 5, 2014 | 12:32 PM
  #31  
ralphobell's Avatar
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From: Austin, TX
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If not you can pull your center console and the shifter cover and reach them quite easily. Of course you have to drill out the rivets....and replace with either rivets or self taping screws.
 
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Old Jun 5, 2014 | 02:12 PM
  #32  
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Rock Crawling
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Okay so everything has been replaced it wasn't as hard as I thought or made it out to be after starting the truck I through 17 codes all missfires and o2 related now I cleared them ran the truck 30 seconds reving up and down nothing has come back

there is a random rattle at times now

update: when I rev and it revs back down there is a gurgle
 

Last edited by ninjaff21; Jun 5, 2014 at 02:14 PM.
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Old Jun 5, 2014 | 02:18 PM
  #33  
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Rock Crawling
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after driving sensors have no activity and heater circuit problem

bank 1 sensor 1
bank 2 sensor 1

are those pre or post cat

All of the sensors under live data show voltage of .8
 

Last edited by ninjaff21; Jun 5, 2014 at 02:48 PM.
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Old Jun 5, 2014 | 03:17 PM
  #34  
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pre.
the system should not even be ready yet. took mine about 100 miles to show ready. I disconnect battery for mine though.
 
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Old Jun 5, 2014 | 06:27 PM
  #35  
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Rock Crawling
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So should i reset by disconnecting the battery and driving a while then clear the codes?
 
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Old Jun 5, 2014 | 07:13 PM
  #36  
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go for a drive on the highway. set the cruise control to 50MPH drive for 30-40 minutes. this should allow the ECU to reset it self for the new sensors.
 
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Old Jun 6, 2014 | 05:32 AM
  #37  
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go for a drive on the highway. set the cruise control to 50MPH drive for 30-40 minutes. this should allow the ECU to reset it self for the new sensors.
 
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Old Jun 6, 2014 | 07:47 AM
  #38  
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drowssap, are you making fun of me...
 
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Old Jun 6, 2014 | 07:50 AM
  #39  
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no just left out the quote marks
 
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Old Jun 6, 2014 | 06:54 PM
  #40  
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From: Colorado Springs, CO
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Originally Posted by jfall
You are absolutely crazy to run around with bad O2 sensors.
You want to ruin your cat converters?

You are my friend ON THE WAY to doing this.

ALL the gas that is dropping the MPG is going into the cat converters and superheating them.

Please STOP driving it and fixing it.
You are also polluting the environment more.

Sorry to be harsh - but this is true.
I wouldn't go so far as to say he's absolutely crazy for driving with a bad O2. The engine will revert to open-loop where it gets fuel and timing values from a pre-determined table. Unless the engine has been modified, or there's some mechanical fault with the engine, you're going to be in the neighborhood of 14.7:1, and it's not a huge cause for concern.

Will the engine operate as efficiently? No, hence the reduced mileage. Will it pollute more? Quite possibly, especially if it's an older engine where the fuel trim is compensating for engine wear or sensors that might be slightly out of calibration. But is it going to grenade your cats in a short time? Heck no.

If the O2 sensor is getting oil on it, it's probably the valve cover gasket(s). The oil leak is hard to see, but it drips right down onto the cats (especially the passenger one). This was exactly the case when my VC gaskets were bad. If you smell a burnt oil smell after a long drive, this scenario is likely.

I wouldn't expect to see more than a 10% reduction in fuel economy due to a bad O2 sensor. If it's significantly lower than that, you may have other problem(s).
 
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