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DTC Code P0301 O2 sensor?

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Old Mar 7, 2010 | 09:01 AM
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Exclamation DTC Code P0301 O2 sensor?

I was pulling into the car wash the other day and my check engine light popped on. I have a Hypertech programmer and thats the code it gave me. I have had something similar and the shop told me O2 sensor they replaced 2. Does 2nd generation have 3 O2 sensors if so Iv got the problem down. Could use all the help
 
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Old Mar 7, 2010 | 09:53 AM
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97 - hmm. i think its the same as my 01.
federal emissions has 1 cat and 2 o2 sensors.
california has 2 cats and 4 o2 sensors.
i wouldn't think any would have 3.

301 is misfire on cyl 1. i doubt its o2 related. check plug, wire, injector on #1. possibly swap the injector to #3 and see if the problem moves.

search here and other places for the OBD codes.
 
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Old Mar 7, 2010 | 11:48 AM
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cyl 1 would be located? Im hoping its just a plug or wire then because iv already stuck hundreds in this winter alone
 
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Old Mar 7, 2010 | 12:35 PM
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here you go. you'll also find the numbers cast into the intake manifold.
http://boxwrench.net/specs/plymouth.htm
 
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Old Mar 7, 2010 | 02:40 PM
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spark plug and wire seem to look good Icheck 1 and 3. How would I check the injector?
 
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Old Mar 7, 2010 | 03:19 PM
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you can feel/listen to it while truck is running. it'll be clicking and vibrating.
you can unplug it and test it with an ohm meter, since it contains a little electrical coil.
you can swap the #1 and #3 to see if the problem moves. caution, disturbing the o-rings might result in a gas leak. you can get new o-rings at the parts store. caution - a gas leak can be catastrophic.

https://dodgeforum.com/forum/2nd-gen...injectors.html
 
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Old Mar 7, 2010 | 03:26 PM
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ok hopefully i can figure it out and it isnt to expensive. thanks for the help
 
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