2005 FX4 SC Rough idle no torque
03-17-2014, 01:25 PM
#1
2005 FX4 SC Rough idle no torque
Standard disclaimer, I've been researching this and have yet to find or narrow down the issue.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
03-17-2014, 02:31 PM
#2
Captain Stringer
Standard disclaimer, I've been researching this and have yet to find or narrow down the issue.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
Start with the plugs making sure they are good and haven't become loose then report back.
The following users liked this post:
mtbinva (03-17-2014)
03-17-2014, 02:34 PM
#3
Standard disclaimer, I've been researching this and have yet to find or narrow down the issue.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
OK, lots of research and lots of suggestions, so I want to type up the synopsis of what has happened so I can narrow down my search to fix the issue. I’m unemployed, so money becomes a bit of an issue as well.
2005 F150 FX4 SC
Issue began with a low RPM harsh stutter. Codes said Cylinder 3 misfire and running too lean. Last December I had the plugs changed, 2 days after Christmas. Truck ran great for two weeks, and then the check engine light came back on; multiple misfires and running too rich, bank one and two running to lean. Only happened when it was cold, but would then run fine. There was the faint spell of gas.
Again, the rough idle was only when cold. Two weeks ago, while driving, the engine started to run so rough; it could hardly make it up a small grade. I replaced the O2 sensors since the truck has a lot of mile on it. Very marginal improvement but goes back to a rough idle. It almost gives the sense of the timing being way off.
No codes showed up as of yet. I’ve had many opinions on the issue, and all “sound” plausible.
My first thought is to change the coil packs. It seems the misfires are so bad it can hardly run. Second thought was since there was the cold rough idling and then gas smell is the Cat’s are fried due to a fuel dump into them. The dealer said there might be an issue with the Cat’s. Again, this is simple speculation at this point.
Any suggestions are GREATLY appreciated. I do have the OBDII reader, and two apps on the iPad that lets me read the codes, and one simple app that lets me add and read PID’s. Any suggestions on where to start and get the performance of what the OBDII gives me would be awesome.
Again, I appreciate any assistance.
Unless you get lucky, this is probably not going to be an inexpensive fix.
Gas smell can come from a loose plug or three ( which can also trigger lean codes due to unmetered air ).
So - first things first: Check ALL plugs for correct torque ( at least ensure they are tight ). If you find loose ones you should pull them and inspect. You should find nickel anti-seize on the ground shield ( a small amount - too much will foul the plug if it migrates), and you should sse silicon dielectric grease in the COP boots and top of the plug. The use if new boots would be nice too.
Second - don't know what yer app / scanner's capabilities are, but you need to pull ALL codes, including Mode $06 pending codes, and Post Them here in yer thread. Those are needed to advise you further.
Third - and this is the scary one as it has the potential to nuke yer engine - you need to read this ASAP since you are in the affected demographic and either confirm the condition exists, or rule it out:
http://ww2.justanswer.com/uploads/sd...229_r07m08.pdf
Fourth - after a while raw dumped fuel will destroy cats - need to have them checked properly.
Fifth and beyond depend upon those codes - e.g. cam phasers, COPs, etc...
BTW - also clean MAF and TB if it hasn't been done. Replace fuel filter as well if it's been a while.
EDIT - list which plugs were used.
EDIT EDIT - ahh, I see good ol' Stringer responded while I was a-huntin' & a-peckin', lol! We are on the same page!
good luck
MGD
Last edited by MGD; 03-17-2014 at 02:41 PM.
The following users liked this post:
mtbinva (03-17-2014)
03-17-2014, 03:53 PM
#5
Again, to begin with, I thank you ALL for your help!!
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
03-17-2014, 04:41 PM
#6
Hi & welcome!
Unless you get lucky, this is probably not going to be an inexpensive fix.
Gas smell can come from a loose plug or three ( which can also trigger lean codes due to unmetered air ).
So - first things first: Check ALL plugs for correct torque ( at least ensure they are tight ). If you find loose ones you should pull them and inspect. You should find nickel anti-seize on the ground shield ( a small amount - too much will foul the plug if it migrates), and you should sse silicon dielectric grease in the COP boots and top of the plug. The use if new boots would be nice too.
Second - don't know what yer app / scanner's capabilities are, but you need to pull ALL codes, including Mode $06 pending codes, and Post Them here in yer thread. Those are needed to advise you further.
Third - and this is the scary one as it has the potential to nuke yer engine - you need to read this ASAP since you are in the affected demographic and either confirm the condition exists, or rule it out:
http://ww2.justanswer.com/uploads/sd...229_r07m08.pdf
Fourth - after a while raw dumped fuel will destroy cats - need to have them checked properly.
Fifth and beyond depend upon those codes - e.g. cam phasers, COPs, etc...
BTW - also clean MAF and TB if it hasn't been done. Replace fuel filter as well if it's been a while.
EDIT - list which plugs were used.
EDIT EDIT - ahh, I see good ol' Stringer responded while I was a-huntin' & a-peckin', lol! We are on the same page!
good luck
MGD
Unless you get lucky, this is probably not going to be an inexpensive fix.
Gas smell can come from a loose plug or three ( which can also trigger lean codes due to unmetered air ).
So - first things first: Check ALL plugs for correct torque ( at least ensure they are tight ). If you find loose ones you should pull them and inspect. You should find nickel anti-seize on the ground shield ( a small amount - too much will foul the plug if it migrates), and you should sse silicon dielectric grease in the COP boots and top of the plug. The use if new boots would be nice too.
Second - don't know what yer app / scanner's capabilities are, but you need to pull ALL codes, including Mode $06 pending codes, and Post Them here in yer thread. Those are needed to advise you further.
Third - and this is the scary one as it has the potential to nuke yer engine - you need to read this ASAP since you are in the affected demographic and either confirm the condition exists, or rule it out:
http://ww2.justanswer.com/uploads/sd...229_r07m08.pdf
Fourth - after a while raw dumped fuel will destroy cats - need to have them checked properly.
Fifth and beyond depend upon those codes - e.g. cam phasers, COPs, etc...
BTW - also clean MAF and TB if it hasn't been done. Replace fuel filter as well if it's been a while.
EDIT - list which plugs were used.
EDIT EDIT - ahh, I see good ol' Stringer responded while I was a-huntin' & a-peckin', lol! We are on the same page!
good luck
MGD
03-17-2014, 05:21 PM
#7
Yes.
Provided - a dealer does the diagnostics on the condition (leaking injector(s) causing hydrolock and/or other related damage). Folks have had entire longblock replacments done in some cases - bent rods, etc.
Usually though, if a leaking injector was found but nothing other than toasted cat(s), wrecked O2's and an oil change was required, they will only replace the injector found to be leaking - AND LEAVE THE REST OF 'EM IN THERE
Smart fellers will change the other seven with updated injectors on their own dime as a precaution.
You also need to be within the time/mileage limit to qualify.
MGD
Provided - a dealer does the diagnostics on the condition (leaking injector(s) causing hydrolock and/or other related damage). Folks have had entire longblock replacments done in some cases - bent rods, etc.
Usually though, if a leaking injector was found but nothing other than toasted cat(s), wrecked O2's and an oil change was required, they will only replace the injector found to be leaking - AND LEAVE THE REST OF 'EM IN THERE
Smart fellers will change the other seven with updated injectors on their own dime as a precaution.
You also need to be within the time/mileage limit to qualify.
MGD
Last edited by MGD; 03-17-2014 at 05:24 PM.
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03-17-2014, 05:48 PM
#8
Again, to begin with, I thank you ALL for your help!!
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
03-18-2014, 07:12 AM
#9
Captain Stringer
Again, to begin with, I thank you ALL for your help!!
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
I started the truck and ran the computer. No codes yet, and the truck barely idles.
Pending code: P0353 Ignition Coil "C" Primary/Secondary circuit (per DashCommand)
Code verified with EngineLink HD.
Per Ford codes: P0353 Ignition coil no. 3 primary circuit fault
This error did exist prior to the plug change. I know the stored codes before I reset the computer was multiple misfire, all cylinders and too lean a condition backs one and two. Sadly I do not have those codes since it was read at an auto-parts store.
Truck started and idled rough, barely ran. Backfires, up front, the cat I believe but not verified.
Replace the COP on cylinder 3, I bet you will see some improvement.