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Old Jul 16, 2012 | 01:31 PM
  #31  
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Sorry but I don't know what those abbreviations are......ect, dvm.
 
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Old Jul 16, 2012 | 01:46 PM
  #32  
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ECT= Engine Coolant Temp sensor.

DVM= Digital Volt Meter.
 
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Old Jul 18, 2012 | 01:48 AM
  #33  
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I just realized I never wrote an update based on this original post. I should have listed the mileage when I replaced the o2 sensors, but that was the fix. Truck has ran great ever since then. That was at least 20,000 miles ago, and just an FYI update on what has happened since then with the truck: replaced one water pump, replaced one heater core, and just fixed a vacuum leak in the emissions system that kicked the code p1494. It was a broken vacuum line and fixed the problem. This forum is absolutely amazing, I have learned more here about my truck than I could have going through and automotive program. Thanks for everyone's help on all topics! By the way, my truck just rolled 164,000 and it runs great, the next big fix is going to be a dreaded transmission rebuild, it's still running at this high of mileage, almost unheard of. It does slip at very high rpms though. Anyways, see you on the next topic.
 
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Old Jul 28, 2012 | 08:11 PM
  #34  
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Originally Posted by UnregisteredUser
FAIL. Oxygen sensors at end of life give up crappy waveforms but don't go open or short, and it's rare for a DTC to be set before the driver complains of lost performance and fuel economy and usually very low idle with "a sucking noise".

We go round and round on this pretty regularly.
So what you're sayin is, I did right by replacing the OEM O2 today that
had 266k on it
 
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Old Jul 28, 2012 | 08:48 PM
  #35  
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Originally Posted by It's Me Patt
So what you're sayin is, I did right by replacing the OEM O2 today that
had 266k on it

If they were indeed the originals, they were way past due for a change! You should see improvement.
 
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Old Jul 28, 2012 | 10:05 PM
  #36  
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Originally Posted by gdstock
If they were indeed the originals, they were way past due for a change! You should see improvement.
That's music to my ears..I did remove the -bat cable for a little bit (prob should have during the swap) my service manual didn't say to, nor does it mention relearning the PCM..what's your thoughts on doing it again with the + as well?
 
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Old Jul 28, 2012 | 10:08 PM
  #37  
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Is it a problem that the replacement O2 (upstream) is an 18" length and the OEM was 12" ???
 
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Old Jul 28, 2012 | 10:09 PM
  #38  
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If it was off for a minute or more, PCM is already reset.
 
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Old Jul 29, 2012 | 12:34 AM
  #39  
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No problem with the cable being longer.....but it was probably the rear one which is longer from the factory. As long as it connects and read, it will be good. I use two rear O2s on my Yota because it is easier to connect with the extra slack. Just make sure the wire does not get against the exhaust and melt insulation.
 
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Old Jul 29, 2012 | 12:36 AM
  #40  
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Originally Posted by It's Me Patt
Is it a problem that the replacement O2 (upstream) is an 18" length and the OEM was 12" ???
No, that should not cause a problem. What brand of sensor(s) did you buy?
 
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