Alright guys, so I have been a avid reader of this site for more than a few years now and I am now just starting to really have trouble with my truck so I figured I would come to you guys for advice! I have had multiply things going on with my truck for about 70k miles, and because of a recent dead end with the truck just completly cutting off on me when it got warm, I was forced to fix the "cam phasers and the works" Anyways I got the truck back after the cam phasers were changed (from a good mechanic I know and watched here and there as he worked on it) Regardless I got the truck back and it was more power than it has ever been, it actually spun tires when I gassed it and ran smoother than it ever has, the clicking noise was gone! But now after a few days of driving I noticed after I drive on the highway for around 30 to 45 minutes while commuting to work it runs great except for maybe going up hills on the highway and I get the Ford "Shudder". But my truck does great all the way till the exit ramp, when I abruptly start slowing down very fast on the ramp when I get to a certain miles per hour (around 45 and below) it starts making a knocking noise like chains are slapping together,and it does it worse when i come to a stop. Now if i put it in neutral and rev my engine the noise goes away sometimes! "Sometimes" is the key word, I will drive on from the exit ramp and when i am not pressing on the gas fully, then it will start making that noise again. Anyways I go get my code checked out and it is the P0306, so i start by changing my coil and it helps some of the shudder going up hills and some of the misses I had but it still makes this noise I am describing, Now this is only when the truck warms up, if it is first thing in the morning it runs great. Now not as great as it was when i first got it back from the cam phaser change, but its like something just got turned off like a light switch, it is really weird. Does anyone have any suggestions? Also there is no codes reading now so not sure where to go with this and I am hoping it is something I can fix myself because after paying the guy i know for my cam phasers I cant afford much more...

 

Have you cleaned the throttle body, MAF, and a new fuel filter?
Hows the FDPM??
What oil and filter you running?

A video might help with the noise you are getting and a oil pressure test.

 

How many miles on the spark plugs? How many miles on the truck? What year is it?

 

The most on any of the spark plugs would be 40 thousand max as they have all been replaced recently, ill post a video tomorrow as i go to work and post it! It is a 2006 Ford f150 5.4 3 v
The throttle body has been cleaned around 5k ago and MAF sensor around 600 miles ago( a little before I sent it to my mechanic) and i am running vavoline 5w20, and a motorcraft filter just changed with new filter around 500 miles ago
No, the fuel filter has been been changed recently
Sorry im not up with all the lingo what exactly is FDPM?
160k miles on the truck also

 

https://www.f150online.com/forums/sh...253&styleid=16

Oops, FPDM.. Long day today. I was able to take mine off, inspect, clean, sand it, primer it, and reinstall with washers to space it out

Sent from my SM-T217S using IB AutoGroup

 

I took multiply videos today, but there was a problem, the noise did arise around the same time as always, that clanking noise when barely in drive idling around a parking lot after a long drive, but my iphone seems not to be able to pick the noise up! But I will look into the FPDM, so i can just clean it and not have to buy a new one, so that will be a free thing to work on? Also I was going to clean the IAC, but in my opinion I don't see those two things causing it to maing the clanking or clicking sound like two chains are hitting together or some odd noise, but I am not mechanic either.

 

yer truck doesn't have an iac...

 

Well than -_-, someone told me it was mounted behind the throttle body and air intake, I have not looked yet but thanks for saving me time of looking for something that is not real...., so anyone ever had this problem that I have described? I am trying to get a video of it but I might have to get something with better sound quality for the procedure.

 

The 2006 has an electronic throttle, no IAC needed.

Noises in a 5.4 3V could be any number of things, the top end is pretty complicated with the VCT/cam phaser system.

It could be a sloppy cam chain tensioner, it may have cam follower issues, it may have phaser issues.

 

Alright, so on the way back from work today this is what I got, now remember when I first crank my truck it sounds wonderful, and does wonderful till it is at operating temperature and i slow down off the highway or come to a stop sign after my truck has been running for a while it seems
http://videobam.com/chiQj

 

Ok so, update everyone so if anyone seems to have this problem, started getting the blinking check engine light today, put it under the scanner and noticed that misfire on cylinder 3, so tomorrow I will have the boot, plug, and coil changed, and also on the cam sensor on bank two we noticed that the wires were bent really bad from being in a awkward position, so seeing that we have investigated it and cut it back and noticed the wires were broke in two going to the cam phasers, thus perhaps when the phasers get hot, it is not giving a signal to the cam and making it act as if it was messed up

 

Thanks for the update. Hopefully the electrical fix will help/fix your issue. It kind of sounds like your phasers or an exhaust leak..

Like glc suggested: Noises in a 5.4 3V could be any number of things, the top end is pretty complicated with the VCT/cam phaser system.
It could be a sloppy cam chain tensioner, it may have cam follower issues, it may have phaser issues

 

Ok, so I replaced that, and that seemed to help it but It still acts up not as bad now though, I replaced my stock air assembly back on the truck nothing, except quieter which I enjoy actually! But I guess I might just bite the bullet and pay 79 dollars for ford for a absolute diagnoises and let them figure it out if they can! What do you guys think, the Ford dealership here said for that price they can figure it out and then I can fix it, are they typically good at figuring things out or should I hold off and keep looking into it.

Also cleaned the TB and the MAF sensor, even degreased the whole engine thinking for some odd reason maybe it is getting to hot, incorrect -_- Any other suggestions guys? I am checking the FDRM tomorrow

ALSO it doesn't sound like a chain sla anymore since I took the CAI off, it sounds more just like a stalling with a weird clunking sound now, hard to explain, def not as loud though.

One last thing, I also noticed today when I started it up, I could smell maybe the smell of raw gas it almost seemed like perhaps? And My bendix in my starter has been going on lately also if maybe that could narrow anything down...

 

Update, I started my truck this morning to let it idle and it ran great, i let it warm up to get the ice off the window as it was about 4 inches thick, after getting it cleared off i cut my truck off and came back a hour later and started my truck back up and i noticed black smoke came out of my pipes, i can not recall it ever doing that, what could the cause be from that?

 

Leaky fuel injectors. Common issue on 05's but possible on 06's.

https://www.f150online.com/forums/v8...ram-07m08.html

You probably aren't covered but it's something to look at.