2004 F-150 Lariat 5.4L 4x4 with moon roof. Build date May 2004, Purchased June 2004. 4300 miles (yes, that's not much).

Oil change and filter
Tire rotation

Severe throttle lag. PCM reflashed to latest version. Part #12A650. Original PCM version was EAY4. No new calibration sticker installed, however. Op codes for diagnostics and reflash were 12650D, 12650DX1, 12650D84. Absolutely ZERO improvement on test drive. Acceleration and shift points were no different either. It still has the 1-2 second delay. Maybe it will learn my driving habits. Then again, maybe it's time for that Diablo. Suspecting nothing got updated even though the service order says it was reflashed.

Belt squeal on cold start. Replaced belt tensioner and belt. Part numbers JK6*1022*AA for the v-belt and 1L2Z*6B209*AA for the tensioner. Success! (aka Monster House - - Done!)

Shudder on takeoff, especially in turns. Replaced drive shaft and u-joints and used Teflon grease on the slip yoke. Part # 4L3Z*4602*KB. The factory drive shaft is simply staked into the u-joints and apparently doesn't allow good centering or alignment. Also susceptible to misalignment if it gets jolted. The new setup uses the conventional c-clips. Major improvement - - even on straight highway at 75 mph. Didn't know how bad things were until the test drive. Success!

Rattle in headliner when going over bumps. Service tech. confirmed the noise but only if he banged on the headliner with his hand. Removed headliner to investigate. Could not duplicate in road test. I asked for NVH kit. Nothing done. On the other hand, during my test drive, the headliner behaved itself. We will see the next time I go over the RR tracks.

For the most part, it was a worthwhile service visit. Only had to wait 2 days for parts and service department at least investigated all my issues. Only paid $40. All repairs under warranty. Adams Ford, Laporte, TX.

Retrax comes Thursday. Can't wait.
Now just gotta convice the CFO to get that Diablo . . .

 

I have a belt squeal on cold starts when I leave my truck outside. Is this a problem?

 

Mine was fixed with the new belt tensioner and belt. The noise was more like a chirp every revolution of the belt. The fix worked and it is now noise free. Not a major mechanical problem, just an annoyance.

 

Hey Hokie, what did the sound proofing look like under the headliner? Could it be beefed up?

 

Unfortunately, I didn't get a chance to see truck with the headliner removed. However, if you have a moonroof, you can gently pull down the back edge of the moonroof cutout in the headliner and see the cavity where the glass and sunshade go. I couldn't see one bit of noise protection, just bare underside of the roof.

So . . . If the headliner starts making that rattling noise again, my plan is to remove the rear overhead light (or stop lamp if necessary), retract the moonroof glass, and stuff acoustic foam in the space that is left. Just enough push between the roof and the headliner to prevent it from slapping whatever is up there.

 

We had a rattle in the headliner on my wife's Explorer which ended up being caused by loose wiring running between the headliner and roof. They wraped the wiring and took care of the problem

 

Multiple post on the "rattling" of the headliner. Here was my post.

http://www.fordtrucks.com/forums/sho...d.php?t=333359