I recently changed the phasers, tensioners, chains and guides on my 04, 5.4. The engine sounds perfect before and after warming up while at idle. The problem I'm having is the engine stalls when I put it in drive or come to a complete stop. The vehicle seems to struggle a little while driving up a hill.

I have driven more than 50 miles, the check engine light hasn't come on, I reset the computer by removing the negative lead from the battery. I cleaned the MAF sensor, throttle body, and both VCT solenoids are new.

Any advised will be appreciated.

 

Did you put oem solenoids or aftermarket? The aftermarket vct solenoids will cause this issue. Also with it going up hill and having issues could be fuel filter