I just replace the coil packs in the 05 lincoln LS less than a year ago. If I get autozone to run a check on the car, will the codes come up as to which coil is bad?

We need to know why your into Failsafe, IF it isn't coil related We need to know why your into Failsafe, IF it isn't coil related

I went to autozone yesterday and said it was a bad cat so I punched them both out and cleaned them and its doing the same thing as yesterday with the fail safe. One cat was bad and broken up inside and the other was good. When I put it all back together with the O2 sensors in, it ran fine for a few seconds unlike before I punched them out. I will go down tomorrow to get the codes again from autozone and give them back to you. I do have a V6 and am aware of the other 3 coil packs under the manifold...pain in the ****. I'll be in touch tomorrow. Thanks for all your help I went to autozone yesterday and said it was a bad cat so I punched them both out and cleaned them and its doing the same thing as yesterday with the fail safe. One cat was bad and broken up inside and the other was good. When I put it all back together with the O2 sensors in, it ran fine for a few seconds unlike before I punched them out. I will go down tomorrow to get the codes again from autozone and give them back to you. I do have a V6 and am aware of the other 3 coil packs under the manifold...pain in the ****. I'll be in touch tomorrow. Thanks for all your help

A converter does not fail in less than 12 years without a reason
Overheating ,rich fuel mixture,vacuum leaks,etc A converter does not fail in less than 12 years without a reason Overheating ,rich fuel mixture,vacuum leaks,etc

Im hoping it will be one of the coils as thats an easy fix. Im hoping it will be one of the coils as thats an easy fix.

What do you get on the dash,as far as failsafe goes? What do you get on the dash,as far as failsafe goes?

I get the wrench light....as soon as that comes on after driving 5-10 seconds it goes right into fail safe I get the wrench light....as soon as that comes on after driving 5-10 seconds it goes right into fail safe

You will need to replace both cats,have no exhaust leaks,
and I would do all 4 O2 Sensors,but you could wait and see
how it goes.
There are too many monitors on our LS's, to write a book on
I spent over an hour studying today for you
I believe you had one or two bad coils for the better part of a year
You were not aware of the misfire condition and the converters got ruined
Now without the monitors able to evaluate the O2 Content from the rear sensor
you have no injector control,thus,while I have not found the technical explanation
you have a MIL Lamp and can not complete much of any monitors functions or
start or end any drive cycles.
Bottom line,no O2 in a good and funtioning converter,your done,won't run
A simple coil failure a year ago,caused a lot of damage and expense.
The Fail-Safe thing is something else. Lets get the exhaust done then continue on
Spray the throttle plate with CRC Throttle Body Cleaner,Spray the MAF with CRC MAF
Cleaner,check fuel pressure You will need to replace both cats,have no exhaust leaks, and I would do all 4 O2 Sensors,but you could wait and see how it goes. There are too many monitors on our LS's, to write a book on I spent over an hour studying today for you I believe you had one or two bad coils for the better part of a year You were not aware of the misfire condition and the converters got ruined Now without the monitors able to evaluate the O2 Content from the rear sensor you have no injector control,thus,while I have not found the technical explanation you have a MIL Lamp and can not complete much of any monitors functions or start or end any drive cycles. Bottom line,no O2 in a good and funtioning converter,your done,won't run A simple coil failure a year ago,caused a lot of damage and expense. The Fail-Safe thing is something else. Lets get the exhaust done then continue on Spray the throttle plate with CRC Throttle Body Cleaner,Spray the MAF with CRC MAF Cleaner,check fuel pressure