bpmarmstrong

When i turn on my truck it idles at 1000 to 1200 and sounds perfect then in like 30 seconds the idle speed drops to around 800 and sounds like a diesel even if press the pedal to run at 1000 it still doesn't sound right. Help please. Check engine lights on p0022. 2005 f150 148k miles.

djfllmn

iTrader: (1)

5.4 3V?

if it sounds like a diesel its a cam phaser issue


idle speed seems normal to me

bpmarmstrong

yea 5.4

djfllmn

iTrader: (1)

yea sounds like a cam phaser issue

bpmarmstrong

What do you think i should try first to fix it.

djfllmn

iTrader: (1)

dump some seafoam in the oil about 200 miles before your next oil change and then try 5W-30 oil