Misfiring at low revs when warm

Misfiring at low revs when warm

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IamWedgend

Original Poster:

163 posts

68 months

Thursday 15th April 2021
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Hi all,

Anyone else had issues with the 2.9 cologne misfiring at low revs when warm?

Bit of a weird one today - drove to work, left it for roughly 5 hours in the sun so it was nice and warm when I got back to it.
Started fine but smelt very rich. Got caught in town centre traffic, and after about 10 mins it started misfiring regularly when idling, like 1-2 cylinders stopped firing. Very lumpy and shakey, felt very close to stalling

When i'd accelerate it would chug for a few seconds until it crawled up to about 1.5k rpm. If I held it there it worked fine.

Seemed to be getting worse so I pulled in. If i started it again it would run with a consistent misfire from the left exhaust. By the time AA arrived it had cooled down and the missfire was gone.

Any thoughts?