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2004 Explorer 4.0 156k. P2195
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tamastar12
Novice
Jan 30, 2018, 11:52 AM
Post #1 of 12
(1525 views)
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2004 Explorer 4.0 156k. P2195
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Changed both valve cover gaskets the other day. Put everything back together as is. Started up fine, no issues. Next day, CEL on and it would occasionally run rough on idle. Ran the code and got P2195 oxygen sensor & p1440 pressure transducer. Any thoughts?
fyi, did not change intake plenum o-rings.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 30, 2018, 2:51 PM
Post #2 of 12
(1501 views)
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Re: 2004 Explorer 4.0 156k. P2195
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That's not an 0/2 code, it's a lean code. I don't believe in coincidences. It's pretty apparent that you did something wrong when putting it back together.
The first thing to look for is hoses left off.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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tamastar12
Novice
Jan 31, 2018, 8:14 AM
Post #3 of 12
(1476 views)
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Re: 2004 Explorer 4.0 156k. P2195
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I've checked several times now and don't see anything left undone.
Today for instance, when I first started it, it idled fine but after 5 minutes started idling rough. But once I left, no issues. Also, no CEL on.
Only thing I found suspicious was the hose coming out of the passenger side valve cover that goes to the intake? was a little loose at the fitting. Maybe this is causing the intermittent issue.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 31, 2018, 8:27 AM
Post #4 of 12
(1469 views)
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Re: 2004 Explorer 4.0 156k. P2195
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That's possible if it was connected to vacuum. If it happens again, a smoke test will be in order.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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tamastar12
Novice
Jan 31, 2018, 9:03 AM
Post #5 of 12
(1461 views)
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Re: 2004 Explorer 4.0 156k. P2195
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Will do. I'll update this post if I find the issue.
Thanks for your help.
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tamastar12
Novice
Jan 31, 2018, 11:46 AM
Post #7 of 12
(1445 views)
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Re: 2004 Explorer 4.0 156k. P2195
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fyi, did not change intake plenum o-rings. oops!
I was already into the installation when I realized I would need them.
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tamastar12
Novice
Feb 6, 2018, 9:34 AM
Post #8 of 12
(1400 views)
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Re: 2004 Explorer 4.0 156k. P2195
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Update: Running fine, no issues, no CEL. Did not find any leaks or have anything done.
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Hammer Time
Ultimate Carjunky
/ Moderator
Feb 6, 2018, 2:27 PM
Post #9 of 12
(1389 views)
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Re: 2004 Explorer 4.0 156k. P2195
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So, all the codes disappeared and the engine started running great all by itself?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Feb 7, 2018, 8:09 AM
Post #10 of 12
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Re: 2004 Explorer 4.0 156k. P2195
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Interesting. If you have any issues let us know, so we can reopen this thread. Thank you for letting us know how things turned out.
Closed as solved. Can be reopened upon request by the OP.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Hammer Time
Ultimate Carjunky
/ Moderator
Feb 7, 2018, 8:21 AM
Post #11 of 12
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Re: 2004 Explorer 4.0 156k. P2195
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I re-opened this because I would like to hear the answer to my question.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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tamastar12
Novice
Feb 7, 2018, 1:57 PM
Post #12 of 12
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Re: 2004 Explorer 4.0 156k. P2195
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yes. I did not change a thing. Did not find any loose electrical connection. All hoses put back in place. Literally just kept driving it and it got better.
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