Rough idle

Tiny
TROUBLE1980
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Joe, I went back and listened to my conversation with him I had today and he was saying the code is only for one bank not both but the fuel trim is reading both sides at +40 and should only read -5 to +5. Basically it is starving for fuel. Not sure if that helps with anything but they do know that but not why the fuel trim readings are +40.
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Wednesday, March 20th, 2019 AT 7:41 PM
Tiny
JACOBANDNICKOLAS
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Welcome back:

This is a tough one. If I had the vehicle, here is what I would do and in this order.

1) Confirm there are no other codes in addition to the 2195.

2) I would check freeze frame data to see if there is anything I can use to pinpoint any specific issue.

3) If nothing is found with freeze frame data, I would then carefully inspect the wiring to the O2 sensor for fraying, damage, connection, corrosion and so on.

4) If the wiring was good, check for vacuum related issues and repair as needed.

5) If that checks good, confirm there are no exhaust manifold leaks on that bank. The 5.4 is known for leaks.

6) If nothing was found, I would replace the O2 sensor.

The +40 on the scanner indicates the computer is trying to compensate for a lean mixture by making the fuel mixture richer. I would expect it to be like that.

Now, earlier you mentioned that the O2 sensors were checked. I'm starting to question if the sensor itself is bad.

Let me know.

Joe
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Wednesday, March 20th, 2019 AT 9:21 PM
Tiny
TROUBLE1980
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Joe, my mechanics old boss the second guy I took it to actually put in a new O2 sensor just to make sure and the number's stayed the same and there are no new codes still just the one. That is why they are stumped as well. I will keep you updated as to what they say about the fuel injectors today. Thanks Joe I appreciate it.

Thank you,
Daniel
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Thursday, March 21st, 2019 AT 3:27 AM
Tiny
JACOBANDNICKOLAS
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Daniel:

This is a tough one. I wish I could be of more help, but everything which makes sense doesn't check out. Are there any exhaust leaks?

Let me know what you find. I would love to be there and see what is causing it.
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Thursday, March 21st, 2019 AT 6:29 PM
Tiny
TROUBLE1980
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Joe, yea I wish you where here also. Because I have no clue what is going on all I know is I'm relaying your opinions and I'm being told they have checked everything I'm telling them to check. And yes I think I have a a exhaust leak because there is a strong exhaust smell that comes from the front of the car.
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Thursday, March 21st, 2019 AT 6:56 PM
Tiny
TROUBLE1980
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& also they where supposed to run some type of fuel injector cleaning method today and I never heard from them, So I dont know if they did it or it didn't help or show what is wrong
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Thursday, March 21st, 2019 AT 6:59 PM
Tiny
JACOBANDNICKOLAS
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They are aware that an exhaust manifold leak can cause a lean mixture, correct? The 5.4L is known for the exhaust manifolds to leak. It's just a thought because I have seen that happen in the past.

Joe
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Thursday, March 21st, 2019 AT 7:05 PM
Tiny
TROUBLE1980
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I would hope so! It hasn't been brought up, and honestly didn't even think to say something about the smell, and honestly didn't know that would cause a lean mixture, Do you think that could be the problem?
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Thursday, March 21st, 2019 AT 7:08 PM
Tiny
JACOBANDNICKOLAS
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Take a look at part 4 of this link:

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

The codes are indicated are not for all vehicles.
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Thursday, March 21st, 2019 AT 8:33 PM
Tiny
TROUBLE1980
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Wow, I would have never thought that could cause a o2 sensor to do that. I will definitely tell my mechanic to check it out asap. Thank you Joe. I will let you know what the findings are as soon as I hear something.
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Thursday, March 21st, 2019 AT 9:45 PM
Tiny
TROUBLE1980
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Joe, I don't think where going to figure this one out, They believe it has something to do with the timing because they can hear a ticking sound when the car first starts up and I'm not willing to pay to find out if it is or pay the cost to have that fixed. So to the scrap yard is where it will probably end up. I have a 1985 Camaro that needs a little work done and as for right now with the weather starting to break in Ohio it will be a cheaper route to get me back driving. Thank you for all your help and time I appreciate you, and wished we could have figured it out.
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Friday, March 22nd, 2019 AT 1:19 PM
Tiny
JACOBANDNICKOLAS
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The ticking noise they hear, does it go away when the engine warms up? I'm near Pittsburgh, so I know once the engine starts to warm up, a cracked or leaking manifold can expand and the noise go away.

By the way, you are very welcome. I wish we could have gotten it fixed.

Let me know about the ticking. Also, let me know if they checked for that.
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Friday, March 22nd, 2019 AT 8:58 PM
Tiny
TROUBLE1980
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Joe they said the ticking does stop after a few minutes & they said there is a small leak in the manifold but there is no way to find out if the manifold is causing the problem with out fixing it and seeing if that works, & they believe its the timing causing the problem priced around $1,200/$1,800 to fix I'm just not prepared to let it become a money pit and keep THROWING $$$ at it to find the problem & its been over 3 weeks & over 5 Certified Mechanics who own reputable business with atleast 30+ years experience each and they can't guarantee what they think it is they want me to pay to "maybe " fix I'm very disappointed because other than this the Navigator is in great shape! As a Husband and father of 4 my priorities are to save $ there I can and just give up on it for now the Camaro only needs gas lines ran & shocks so I will probably just park the Lincoln till I have the cash to really invest into it. If they figure something out before I pick it up Monday ill let ya know but its not Looking like we will figure it out. Thanx again Joe I hope you enjoy your weekend.
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Friday, March 22nd, 2019 AT 9:24 PM
Tiny
JACOBANDNICKOLAS
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You are welcome and you too have a nice weekend.

Joe
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Friday, March 22nd, 2019 AT 9:36 PM
Tiny
TROUBLE1980
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Thank you!
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Friday, March 22nd, 2019 AT 9:37 PM
Tiny
KEN L
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JACOBANDNICKOLAS is one of our best! Use 2CarPros anytime, we are here to help. Please tell a friend.
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Monday, March 25th, 2019 AT 11:30 AM
Tiny
TROUBLE1980
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Joe, I have a new problem but with my 1985 Chevrolet Camaro, are you able to help me with this car?
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Sunday, March 31st, 2019 AT 5:59 PM
Tiny
TROUBLE1980
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I just put a new 140 volt alternator in because I thought my old 80v or 100v was not enough power, While in drive and driving it read's +13/14 but while stopped at a light it dips down to red within twenty seconds that's with nothing on no lights or radio. With lights and at a light same problem. While in park with lights on stays around 13. So when driving at all stop light I have to put it in park and take my foot off the brake. Please any help would be appreciated I am down to only this car since we never figured out the Lincoln situation.
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Sunday, March 31st, 2019 AT 6:10 PM
Tiny
JACOBANDNICKOLAS
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Welcome back:

You aren't having much luck. Yes, I would be happy to help. However, I need you to start a new thread. We are trying to keep different problems separated. While you are reposting the issue, make sure the belt is tight and the idle RPM's are within spec. Let me know in your new post what you find.

I hope you understand. I will watch for your post.

Joe
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Sunday, March 31st, 2019 AT 7:01 PM
Tiny
TROUBLE1980
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Joe good to hear from ya again, I am not sure how but I will try to figure out how to start a new post now.
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Sunday, March 31st, 2019 AT 8:22 PM

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