so we got big issues!

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ZombieSoldier

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On our move cross country to Georgia, a check engine light lit up. Got here and got codes scanned and I have a P0302 and a P0171. After talking to a few of my mechanic buddies, who decided it for me as a lean cylinder bank #1 and misfire cylinder #2, thought I had clogged injectors and had me remove all 8 injectors and clean them. I did and I am having a problem where it feels like u am not running on all 8 cylinders. Last week I changed the coils... So what do y'all think it is? It's a 3valve 2005 with the 5.4
 
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bigmekanik81

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Did u reset the pcm after the repair u did...I simply would've started with looking for a vacuum leak then prolly #2 plug &coil to see if it still misses...now if it was missing for awhile the pcm will shut that injector down so it doesn't wash out that cylinder...thus needing to reset pcm.and if that fixed it I would recommend replacing all spark plugs...and usually when one coil goes there are a few that start to follow
 
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ZombieSoldier

ZombieSoldier

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I did not reset the PCM this last time after doing the injectors. I did erase the codes after they popped up. I had a spare coil that I replaced the bad o e with, I even had the could tested and they were good when the misfire was happening.
 

tallsville

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when i changed my coils i drove it around the block and had the misfire. thought it was the coil turned out it was just a loose wire going to the plug. could be one of the wires is bad/worn through
 

tsingson

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My misfire was from the leaking injectors that they had the tsb about. Ford replaced them for free. Not sure if this is the problem.
 

rcreecer

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Swap the suspect coil with another, clear the codes, and see if the problem follows the coil. That will at least isolate that issue. How does the spark plug look on 2?
 
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ZombieSoldier

ZombieSoldier

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Ok so I had all the coils tested. All good. Checked the wiring going to them. All good. I had cleaned all the injectors out. Next step was spark plug on cylinder #2. So I soaked it since yesterday morning in liquid wrench. Hooked up my socket, ratchet, and extension. Turned it and plug came out. MINUS the tip. FML. So now I have to figure out how to get the tip out.
 

KC Dave

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So the upper part of the plug came out, but the bottom is still in the head correct? If so, its Somewhat common on the 3V 5.4. Ford has a tool to extract them and it may be available at a local parts store. The original OEM plugs were a 2 piece design. Replacement plugs are one piece.

Earlier 2V 5.4 would strip the threads on some.
 

sgtowing

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I agree with KC. As long as you have the tool, go ahead and do all of them. The sooner you do them, the less chance of breaking. I had 4 break on mine.

Sent from my DROID BIONIC using Tapatalk
 

ELVATO

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If you happen to have Amazon Prime, you could get it by Wednesday. Link

Or try your local craigslist to see if someone is selling/renting it around your area.
 
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ZombieSoldier

ZombieSoldier

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Well check it out. Local dealership took care if me for $45.00

Only took 2 spark plugs, 1 coil, and reprogramming of the ecu with newest ford updates and it runs better than it ever has for us.
 
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ZombieSoldier

ZombieSoldier

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Not yet. Had to get the expedition back on the road quickly as my tranny in my Powerstroke is really acting up. Plus the dealer only had 1 plug and refused to put in anything other than Motorcraft plugs
 
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