Bradydonohue

My 2004 f150 starts terribly after sitting there for a couple of hours.

Every morning and after work it starts and as soon as it turns over the rpms are like up and down from 500-700 and it sounds kinda like muffled. Then after about 5 seconds the idle will just randomly go up to 1100 rpm and it will sound just fine and drive just dine cold.

So after this cold start I drove it a mile. Pulled over then restarted the engine to see what would happen. It started perfectly.

Any help would be great.

Thanks

Especial86

iTrader: (1)

What do you mean "starts terribly"?
Are getting a crank with no start or a long crank?

grss429

If its starting fine, but has a high idle its just so it pre heats the cats

08awdlimited

Sounds like oil pressure sounds likes its running to lean at start up or vice versa

techrep

iTrader: (1)

What motor we talking about here...