Rough idle/stalling

[BrendanMc]

Hello new member here
2005 Lincoln LS 3.0
So as the topic says I'm having a rough idle at about 600rpm and lower then stalls intermittently

I used Forscan and these are all the codes that come up. Any help appreciated

 

[milehighmikey]

Start with replacing the coil on cylinder 5, along with its spark plug. Luckily, it is the middle plug on the driver's side of the engine.

 

[BrendanMc]

Already replaced all coil packs/plugs.. bought all new injectors and gaskets.. was going to change them all but was wondering if there would be an easier route to fix

 

[AmsterDutch]

Already replaced all coil packs/plugs.. bought all new injectors and gaskets.. was going to change them all but was wondering if there would be an easier route to fix

If you replaced The cylinder #5 Coil Over Plug ( COP) and spark plug but still have the cylinder misfiring you NEED to check the ( COP ) connection and the Spark Plug Gap and make sure everything is connected and Gapped perfectly and with spec ...before you start chasing Ghosts you need to get this misfire figured out and FIXED! After the misfire is Fixed check back with us again!

 

[BrendanMc]

Having it brought to my mechanic's house today, going to have him check the gap on the spark plugs before having him do the injectors I'll let you know what he finds

 

[BrendanMc]

Turns out one of the intake manifold's bolts was snapped off so it was loose, oil everywhere even on the spark plugs and coil boot was bad on a COP. Also pigtail to throttle body was broken.. everything got cleaned, bored out the bolt, changed spark plugs, new pigtail, new upper and lower gaskets and changed all the injectors running a lot smoother now but still showing cat efficiency below on bank 1 and 2

 

[04_Sport_LS]

Cat converters are probably partially plugged and need replaced.

 

[BrendanMc]

Cat converters are probably partially plugged and need replaced.

They were both replaced a year ago along with the O2 sensors

 

[04_Sport_LS]

That doesn't mean that all the recent problems you had... didn't damage them.

 

[BrendanMc]

That doesn't mean that all the recent problems you had... didn't damage them.

True, I'll look into it thanks