COP, More than fail at a time?
Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
COP, More than one fail at a time?
2001, F150 4.6L, 110K miles
I have had coils go out in the past and the last one took a while to locate as I was thinking I may have had one bad coil and maybe another with mositure that cleared up.
This time I was pulling my snowmobile trailer and the truck started to mis-fire and the CEL came on, I continued to my destation ~50 miles with it missing. I then had the codes read and Auto Zone said P0304, P0307 and P0301. I cleared the codes and with out pulling the trailer the light would not come back on but there is a mis-fire very noticable at idle. I picked up one coil and and replaced #4, still mis-fire, then the coil that was on #4 replaced with #7, still mis fire, then #1... check Plug #4 it did not look very good so I replaced it, (I replaced all plugs at 85K) other plugs looked okay.
Is it common for more then one coil to fail one after the other while driving? Not sure if the codes from autozone were pending from a while ago.
I am thinking about replacing all the plugs and coils as the originals have been the problem coils in the past.
Any ideas?
Thanks,
John
I have had coils go out in the past and the last one took a while to locate as I was thinking I may have had one bad coil and maybe another with mositure that cleared up.
This time I was pulling my snowmobile trailer and the truck started to mis-fire and the CEL came on, I continued to my destation ~50 miles with it missing. I then had the codes read and Auto Zone said P0304, P0307 and P0301. I cleared the codes and with out pulling the trailer the light would not come back on but there is a mis-fire very noticable at idle. I picked up one coil and and replaced #4, still mis-fire, then the coil that was on #4 replaced with #7, still mis fire, then #1... check Plug #4 it did not look very good so I replaced it, (I replaced all plugs at 85K) other plugs looked okay.
Is it common for more then one coil to fail one after the other while driving? Not sure if the codes from autozone were pending from a while ago.
I am thinking about replacing all the plugs and coils as the originals have been the problem coils in the past.
Any ideas?
Thanks,
John
Last edited by jjlrrw; Jan 28, 2008 at 11:05 AM.
i ain't rite
Joined: Mar 2005
Posts: 65,507
Likes: 5,563
From: Marlboro Mental Hospital.
within 1500 miles, i have had to replace 4 coils on my crown vic, and my nephew had 3 coils go within 400 miles on his 5.4.
i don't think one bad one makes the others go, i think is is just a coincidence that they go like that.
i don't think one bad one makes the others go, i think is is just a coincidence that they go like that.
Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Originally Posted by LxMan1
That's odd unless it's a wiring problem. Same P0304 and p0307 codes??
I am going to bring a oscope home and see if the coils are getting power, maybe a fuel injector???
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Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Originally Posted by jjlrrw
I think so I will verify when the codes come back, it almost always pull P0304 and will also pull P0307, but not always P0307.
I am going to bring a oscope home and see if the coils are getting power, maybe a fuel injector???
I am going to bring a oscope home and see if the coils are getting power, maybe a fuel injector???
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Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Truck still running rough and pulling the P0304 and P0307 but today it pulled a P0113 for the first time, "Intake Air Temperature Circuit High Input " Any ideas if this code is related or what causes it?
Thanks for any help!
Thanks for any help!
Elder User
Joined: Dec 2007
Posts: 842
Likes: 0
From: royal oak, mich
Originally Posted by jjlrrw
Truck still running rough and pulling the P0304 and P0307 but today it pulled a P0113 for the first time, "Intake Air Temperature Circuit High Input " Any ideas if this code is related or what causes it?
Thanks for any help!
Thanks for any help!
Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Originally Posted by kaboom10
I'd replace the sensor if cleaning the connection doesn't work. We used to clean the connections first then swap spares to see if there was an improvement. Usually fixed it.
Thanks
Elder User
Joined: Dec 2007
Posts: 842
Likes: 0
From: royal oak, mich
Originally Posted by jjlrrw
Are you saying the intake Air Temperature sensor? Where is that loacted or what sensor are you referring to? Could this sensor cause misfires?
Thanks
Thanks
Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Well I dropped the truck off at the dealer last night (wish I would have dropped it off a cliff). Anyway received a call today, No compression in #4, very little in #7 and #5.
Here are the options from the dealer...
1) continue to tear into the engine and find all that is wrong, they feel at least one head maybe lower engine damage on the side with zero compression?
2) there is a used engine at a local yard 80K miles, 90 day parts only warranty. $3100 installed.
3) Re-built Ford engine, 75K mile warranty. $4900 installed.
The one I like best but with 3' foot of snow on the ground and no time, do a swap myself.
Any thoughts??? And to think I almost traded it in last fall
Here are the options from the dealer...
1) continue to tear into the engine and find all that is wrong, they feel at least one head maybe lower engine damage on the side with zero compression?
2) there is a used engine at a local yard 80K miles, 90 day parts only warranty. $3100 installed.
3) Re-built Ford engine, 75K mile warranty. $4900 installed.
The one I like best but with 3' foot of snow on the ground and no time, do a swap myself.
Any thoughts??? And to think I almost traded it in last fall
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
90day warranty vs 75K for $1700 more, I would have to go with #3.
Cheaper than a new truck and a better warranty than a new one, too.
How many miles on yours now? Could be galled valve guides causing the valves to not close properly., But replacing the heads will cost about as much as complete engine will.
Cheaper than a new truck and a better warranty than a new one, too.
How many miles on yours now? Could be galled valve guides causing the valves to not close properly., But replacing the heads will cost about as much as complete engine will.
Thread Starter
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Mountain Pass
Joined: May 2005
Posts: 203
Likes: 2
From: West Michigan
Originally Posted by LxMan1
90day warranty vs 75K for $1700 more, I would have to go with #3.
Cheaper than a new truck and a better warranty than a new one, too.
How many miles on yours now? Could be galled valve guides causing the valves to not close properly., But replacing the heads will cost about as much as complete engine will.
Cheaper than a new truck and a better warranty than a new one, too.
How many miles on yours now? Could be galled valve guides causing the valves to not close properly., But replacing the heads will cost about as much as complete engine will.