So since the weather has cooled down, My 05 4.4 has a lumpy idle ONLY on cold starts. It sounds and feels like a muscle car with an aggressive cam. Once the engine comes up to temp it smooths out and it idles smooth as can be. No drive ability issues or codes.
To be clear when I first crank the truck up, the revs stay up above 1k rpm it doesn't start the lumpy idle until the rpms drop down after a minute or so.
I've cleaned the MaF, cleaned the throttle body and replaced the pcv. Also recently sealed up the egr due to a vacuum leak.
I should also add that I reset the adaptive values
To be clear when I first crank the truck up, the revs stay up above 1k rpm it doesn't start the lumpy idle until the rpms drop down after a minute or so.
I've cleaned the MaF, cleaned the throttle body and replaced the pcv. Also recently sealed up the egr due to a vacuum leak.
I should also add that I reset the adaptive values
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