General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Code 172, CEL comes on then goes off shortly after

Old Jul 6, 2020
  #26  
420stackz's Avatar
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From: Peoria
OK so I will change the passenger side o2 sensor and see what happens. I am reluctant to change the driver side for 3 reasons:
1. no code for it
2. more money/time spent that I need for other things
3. its a massive ******* headache to get to.

I happen to have a motorcycle I like to kindly refer to as my "gold digger girlfriend", really nice to look at but super heavy on the wallet. So that's where the money is going lol
 
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Old Jul 6, 2020
  #27  
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Well you don't have to do anything yet
If engine starts to ping or MPG goes for a dive then you would need to have another look

That code is just a "heads up" not a warning

CEL will FLASH if you need to check things out "right now"
 
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Old Jul 7, 2020
  #28  
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Everyone talks about engine pinging but I've never heard that so I don't know what it sounds like. Is it easy to hear?
 
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Old Jul 7, 2020
  #29  
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Yes, very easy to hear

Have you ever heard a diesel engine running?
They often ping/knock when running, not "normal" but expected because of how they work, and they are built to handle it, well overbuilt to handle it, lol
 
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