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check engine light still on

   
  #1  
Old 12-20-2007, 12:18 PM
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Default check engine light still on
I ran a diagnostic on my98 disco and it said to that I had bad O2 sensors. I changed them, reset it and the check engine light came back on 24 hours later. Any ideas?
 
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  #2  
Old 12-20-2007, 12:20 PM
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Default RE: check engine light still on
What is the code now? Did you replace all 4 of them?
 
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  #3  
Old 12-20-2007, 12:21 PM
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Default RE: check engine light still on
How many miles?
 
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Old 12-20-2007, 02:41 PM
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Default RE: check engine light still on
replaced all 4 of them and 84K miles on it. i haven't hooked it back up yet to see what the code reading is but am going to this weekend
 
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  #5  
Old 12-22-2007, 03:19 PM
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Default RE: check engine light still on
the code is P1187 HO2S heater short circuit upstream sensor..........OK what is it and how difficult to fix.........thanks everyone
 
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  #6  
Old 12-22-2007, 05:17 PM
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Default RE: check engine light still on
I posted a reply on your other thread. Did you wire these in yourself?
 
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  #7  
Old 12-22-2007, 05:57 PM
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Default RE: check engine light still on
Check the connection, if all is OK then call your supplier and see how he wants to warranty the replacement.
 
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  #8  
Old 01-07-2009, 05:51 PM
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Default RE: check engine light still on
I also have PO441 showing up under my CHECK ENGINE Light. Is it a gas cap or valve and what are the expenses to fix, etc...

Thanks Matt Lively
 
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  #9  
Old 01-07-2009, 06:19 PM
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Default RE: check engine light still on
Nope, it is an incorrect purge flow.
 
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