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2005 Ford F150 code PO174

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Dave T
New User

Aug 10, 2015, 6:44 PM

Post #1 of 5 (2949 views)
2005 Ford F150 code PO174 Sign In
Drove thru a large puddle and car started running rough.
The check engine light came on.
I checked codes and it said misfire in cylinder 3.
Its done this before and self corrected.
I changed the plugs, wires and coil pack.
It still runs rough with engine light still on.
Now there's a PO174 code
System 2 lean bank 2
What am I missing?
Thanks in advance.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 11, 2015, 4:48 AM

Post #2 of 5 (2922 views)
Re: 2005 Ford F150 code PO174 Sign In
 Is it still misfiring on #3 cylinder? You need to figure out why it is misfiring before tacking the P0174 code.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 11, 2015, 4:48 AM)


Dave T
New User

Aug 11, 2015, 11:14 AM

Post #3 of 5 (2904 views)
Re: 2005 Ford F150 code PO174 Sign In
The misfire code isn't coming up now, but it's still running rough.
I'm at a loss


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 11, 2015, 5:41 PM

Post #4 of 5 (2895 views)
Re: 2005 Ford F150 code PO174 Sign In
Did the engine suck up any water from the puddle you went through?

The code may not come back for a while if it is still missing on that cylinder because you reset the monitors when you cleared the codes. Does it feel like a dead misfire? Does it miss all the time? Unplug each injector one at a time while the engine is idling and misfiring to figure out which cylinder(s) is misfiring. The one injector you unplug that doesn't make a change in the running of the engine is the one misfiring.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 11, 2015, 5:42 PM)


Dave T
New User

Aug 11, 2015, 9:37 PM

Post #5 of 5 (2882 views)
Re: 2005 Ford F150 code PO174 Sign In
Not sure where the engine would suck up water( air intake?)
But it's possible.
The water was at least 6 inches deep.
I will try disconnecting the injectors.
What other that plugs wires and coil pack would cause a misfire ?





 
 
 






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