I Need Possible Solutions

GMAN

GMAN

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OK everyone give me some solutions that will permantly fix a P174 Bank 1 Lean code? What are all possibilities that will make this code come on?
 
GMAN said:
OK everyone give me some solutions that will permantly fix a P174 Bank 1 Lean code? What are all possibilities that will make this code come on?
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If i'm correct wasnt that a IAC error code?
Also could be, IMRC
 
1)Intake gasket leak on the passenger side, either intake to imrc plate or imrc plate to head.
2)Exhaust leak somewhere close to the O2 sensor on that side.
3)IMRC plate front and rear pivot points leaking on the passenger side.

Your O2 sensor is seeing such a lean condition, that the computer is adding enough fuel to surpass its upper limit. Thereby activating the code.
 
I'm going to take a guess here and say, swap out the MAF with another one you have and clean it good with MAF cleaner and install it. Disconnect the battery first and then connect back when done and see if you still have that code.

Could be EGR related too.
 
Since he only has 1 code, the problem has to be local to the passenger side. The only other option would be a bad O2 sensor. He would need to see the actuall switching, to determine this. Also, ecm codes on OBDII vehicles cannot be erased by disconnecting the battery. They can only be cleared by scan tool.
 
psychostang is right on the money, it is one of those or a bad O2, a dirty MAS will show both banks and it is highly doubtful. Check that banks intake IMRC and exhaust.
 
Well, I can rule out manifold leaks, be the whole top end was done before I bought the car. I thought about the MAF, taking it off and cleaning it. I will also look into replacing the O2 sensors as well. Which o2 sensor would be the one to look at?
 
GMAN said:
Well, I can rule out manifold leaks, be the whole top end was done before I bought the car. I thought about the MAF, taking it off and cleaning it. I will also look into replacing the O2 sensors as well. Which o2 sensor would be the one to look at?
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If the work was just done, maybe a mistake was made? I don't believe in coincidences.

Bank 1 is the passenger side.
 
dont ever say the work was just done so i can rule this out, that doesnt mean squat, we are human, and we do make mistakes, for all you know the person who went through the top of the motor could have been a crackhead. just because someone is a mechanic, and owns a repair shop, doesnt mean they are god! check everything that was suggested, i'll put money on whatever was recently done is the problem!
 
BAD97LSC said:
dont ever say the work was just done so i can rule this out, that doesnt mean squat, we are human, and we do make mistakes, for all you know the person who went through the top of the motor could have been a crackhead. just because someone is a mechanic, and owns a repair shop, doesnt mean they are god! check everything that was suggested, i'll put money on whatever was recently done is the problem!
Click to expand...

I made a mistake once...
Started school, and they told me to buy paper, pencil and an eraser....turns out I didn't need the eraser
 
you didnt need the pencil either, you cant write, you only needed the paper to sit in the corner and eat it, you were special back then, just like today!
 
NoLimit95 said:
I'm going to take a guess here and say, swap out the MAF with another one you have and clean it good with MAF cleaner and install it. Disconnect the battery first and then connect back when done and see if you still have that code.

Could be EGR related too.
Click to expand...
Terry, those would only be the culprit if he had P0171 and P0174. MAF would throw a code for MAF (maybe) or the car would idle rough or both banks would read lean.
EGR would also cause both banks to run lean if it was leaking. If it was stuck then it would code as well.
Put this cone shapped hat on and sit in the corner.
Psychostang said:
Since he only has 1 code, the problem has to be local to the passenger side. The only other option would be a bad O2 sensor. He would need to see the actuall switching, to determine this. Also, ecm codes on OBDII vehicles cannot be erased by disconnecting the battery. They can only be cleared by scan tool.
Click to expand...
+1
GMAN said:
Well, I can rule out manifold leaks, be the whole top end was done before I bought the car. I thought about the MAF, taking it off and cleaning it. I will also look into replacing the O2 sensors as well. Which o2 sensor would be the one to look at?
Click to expand...

Dont rule that out. In fact that would push the vac leak diagnosis to the top of my list. I am sure people screw up.

Let me point this out. I just bought brand new $71 Ford OEM IMRC to head gaskets. Had them for maybe 2 months on the car. Passenger side was leaking. Managed to pinch the gasket a little and made a flat spot.
Now I have new $23 Felpro gaskets on there that appear identical to the Ford ones. Point being, they could have messed up.

Get some starter spray........., actually I dont feel comfertable giving you that advice.

Get a vac gauge and some vac line. Pull off one of the vac lines from eaither FPR and put it on the gauge. With the AC off and the engine idling it should have at least 18lbs vac. If its more thats good, if its less then you have a vac leak and need to pull the plenum and get new gaskets.

Other then that you MAY have a bad O2 sensor. It will be the front one on the drivers side. Its a different code when the rear ones go bad and they dont controll A/F, they just make sure the front O2s are working.
 
Laser is correct. P174 system too lean Bank 2. So change everything I said to the drivers side.... :)
 
I have a theory I am going to test out. I don't want to divulge anything yet until I see if this works. I will know more on Saturday. I'm having the car smoked tomorrow to check for Vac leaks, as this is the best way to find them.
 
I'm just gonna put my cone hat on and get in the corner until you all figure out what side of the car you're talking about. :p

GMAN, did you ever go to the junk yard and get the part you needed and replace the one you epoxied?
 
By the way, if you know your firing order...find plug 1, plug 1 is always in bank 1...hope that helps
 
Psychostang said:
Since he only has 1 code, the problem has to be local to the passenger side. The only other option would be a bad O2 sensor. He would need to see the actuall switching, to determine this. Also, ecm codes on OBDII vehicles cannot be erased by disconnecting the battery. They can only be cleared by scan tool.
Click to expand...

Yes, I have a scanner and I know this but when changing out electrical parts having to do with the engine, especially the 02's as you suggested, I have always been advised to remove the ground on the battery first. When I said that, I didn't mention clearing codes for that purpose.
 
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