I apologize in advance if this post gets a bit lengthy. I have a story to tell.
A few weeks ago my 21 year old son told me that his 2005 LS 4.9 Ultimate was running "badly" and he had a CEL on.I did a bit of research (thanks to all on this site) and preliminarily identified the problem as a COP issue. I also was made aware of the warranty extension associated with this problem.
I took it to the local Lincoln dealer where they read the codes and diagnosed the problem as a misfire on cylinder 1. They said that this wasn't a warranty issue because the coil was totally open. The odometer was at 102,000 at this time and it was out of the extended warranty range anyway. So after a $300 bill to get the coil replaced, he drove the car away poorer but glad to have the issue resolved.
About 1 hour and maybe 20 miles later, guess what, the CEL goes back on. He had to go out of town for a week (without the car), so he didn't get it back to the dealer until a week later. They now diagnose a problem with cylinder coil #6 which they said was fine the first trip in. They wanted another $300 for this repair and the car seemed to be running fine, so I went off to do a bit more research on the subject. We decided to use the Labor Day weekend to replace the remaining 7 COPs and the plugs and the valve cover gaskets while we were at it.
When we took the plug cover off the passenger side, we were shocked to find the rear bolt missing on the cover, the only COP to appear new was #2 (not #1), the hold down bracket on COP #1 totally broken off, and the bolt that holds #2 COP spinning in its socket (stripped).
After a long day under the hood, we went to the parts store and cleared the CEL codes. After about a half hour and 10 miles or so, the CEL goes back on. Back to the store to pull codes and we get an emission type code (but no misfire codes). Cleared codes again and CEL goes on again a bit later.
Thinking the misfires were not a problem now, my son heads off on a 600 mile trip to Colorado for his 22nd birthday. I had no idea he left with the CEL still on, but it appears he was hell bent on going.
Last night (3 days later) he calls me and says that the car is not running right. I looked up a local service center near where is staying and they read codes for him. The mechanic said he lifted the plug cover on the passenger side and did a quick look see and found everything to be OK, but he said the car is running horribly. The codes were P0300, P0301 through P0308 (all 8 codes) and P0316. He also said he could see #2, 4, 7, 8 misfiring on his machine. He said he couldn't look any farther until next week some time.
Since my son has to be back here on Sunday and has no place to stay after tomorrow night, I am driving a rescue mission tomorrow (600+ miles) to U-haul the car and his rear back to Omaha.
Any ideas?
Thanks again all for this forum and tech advise.
A few weeks ago my 21 year old son told me that his 2005 LS 4.9 Ultimate was running "badly" and he had a CEL on.I did a bit of research (thanks to all on this site) and preliminarily identified the problem as a COP issue. I also was made aware of the warranty extension associated with this problem.
I took it to the local Lincoln dealer where they read the codes and diagnosed the problem as a misfire on cylinder 1. They said that this wasn't a warranty issue because the coil was totally open. The odometer was at 102,000 at this time and it was out of the extended warranty range anyway. So after a $300 bill to get the coil replaced, he drove the car away poorer but glad to have the issue resolved.
About 1 hour and maybe 20 miles later, guess what, the CEL goes back on. He had to go out of town for a week (without the car), so he didn't get it back to the dealer until a week later. They now diagnose a problem with cylinder coil #6 which they said was fine the first trip in. They wanted another $300 for this repair and the car seemed to be running fine, so I went off to do a bit more research on the subject. We decided to use the Labor Day weekend to replace the remaining 7 COPs and the plugs and the valve cover gaskets while we were at it.
When we took the plug cover off the passenger side, we were shocked to find the rear bolt missing on the cover, the only COP to appear new was #2 (not #1), the hold down bracket on COP #1 totally broken off, and the bolt that holds #2 COP spinning in its socket (stripped).
After a long day under the hood, we went to the parts store and cleared the CEL codes. After about a half hour and 10 miles or so, the CEL goes back on. Back to the store to pull codes and we get an emission type code (but no misfire codes). Cleared codes again and CEL goes on again a bit later.
Thinking the misfires were not a problem now, my son heads off on a 600 mile trip to Colorado for his 22nd birthday. I had no idea he left with the CEL still on, but it appears he was hell bent on going.
Last night (3 days later) he calls me and says that the car is not running right. I looked up a local service center near where is staying and they read codes for him. The mechanic said he lifted the plug cover on the passenger side and did a quick look see and found everything to be OK, but he said the car is running horribly. The codes were P0300, P0301 through P0308 (all 8 codes) and P0316. He also said he could see #2, 4, 7, 8 misfiring on his machine. He said he couldn't look any farther until next week some time.
Since my son has to be back here on Sunday and has no place to stay after tomorrow night, I am driving a rescue mission tomorrow (600+ miles) to U-haul the car and his rear back to Omaha.
Any ideas?
Thanks again all for this forum and tech advise.
