ALL GT owners TSB 05-15-8 and 3V-V8

Jenns01TA

Active Member
Mar 31, 2005
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Okay, so Jason (longhorn) brought up his issue of the 3V-V8 "heads" and the potential for a widespread problem. Upon further research I located TSB 05-15-8 "Ticking and/or Knocking noise from engine 4.6L/5.4L 3-V".

So, in all fairness to Jason - YES- this is a KNOWN problem that Ford is having with the 3V design, 4.6L or 5.4L. Is this an adequate fix for the problem? :shrug: The lash adjusters are probably my least favorite valve design (my reasoning follows the TSB excert below).

VALVE TRAIN
Lash adjusters can make a ticking/tapping noise
noticeable at any engine RPM/temperature and is
audible through the wheel well or an open hood.
However, with the hood down, lash adjuster noise
can be heard as a light tapping noise through the
wheel well and is considered normal.

Tracing this noise must be isolated to a cylinder
bank. If one bank is louder than the other bank,
focus the diagnostic to the loud bank. If both banks
seem loud with the hood down, compare wheel well
sound level to another comparable vehicle.

Use a stethoscope on the top of the cam cover bolt
heads to confirm which bank is affected. Move the
probe from front to rear if necessary.

If isolated, replace all the lifters, intake and exhaust,
only on the affected cylinder bank
.

Replace 5L1Z-6500-AA Lash Adjuster (2005 Vehicles)


Here is my problem with these evil little things. They require an adequate oil supply with optimal pressure to function properly. Valve lash adjusters look and act sort of like hydraulic lifters, but there function is much different. The lifters are bathed to a larger degree in oil. No problem usually. They ride on the camshaft lobes and provide the bump for the rockers and to push down on the individual valves.

Since the rockers ride directly on the cam lobes, oil hits the cam journals in the cam caps and then flows through the rocker shafts to the rocker arms, and in turn, into the lash adjusters, which are pushing down on the valves. The adjusters are at the very end of the oil supply chain.

They have a small spring loaded checkball in them that maintains oil inside the adjuster and relieves any air that gets in there. A little leak down over night will allow them to "tick" a bit in the morning, or when cold, but SHOULD go away after a time. If not, then you either need new adjusters or have a low oil level. Over time it will indicate your oil pump is giving way, or worse, time for new crankshaft main bearings....yada, yada, yada..... :notnice:

So, I give credit to Mr. Jason Longhorn for bringing this issue up. I would ask anyone with the 3-V/V-8 to review TSB 05-15-8 and make sure you keep an ear out. DO NOT assume that the ticking you are hearing is a NORMAL aspect of the injectors or the VCT (variable cam timing system).

Jennifer
 
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Most older published ones can be located from Alldata.com. Recent ones I schmooze from a fellow Stang buddy (who should be posting them here too... :) ).....

Thanks for the props gneal. I have lurked around many boards, but just love it here.

And thanks Phantom for adding the .pdf file, errrrr, I guess I could have just done that. LOL :rolleyes:

Jennifer
 
i was wondering how you accomplished that. I will ask Ty if he can update the TSB sticky with the new ones I have on hand.

That way you can get your attachment space back.

Jenn
 
Jenns05Stang said:
i was wondering how you accomplished that. I will ask Ty if he can update the TSB sticky with the new ones I have on hand.

That way you can get your attachment space back.

Jenn


Jenn...I have 5 other TSB files.. 6 with the tapping one in this thread that are not in there....I can PM them to you if you want...You can just post um in the sticky if you want..Or get Mike Raburn to edit them in his original post.
 
I was wondering if we want the actual PDF in there also though. I can add the # and description no problem. But, I think the actual PDFs are invaluable.

Whatca' think?

Jenn
 
Jenns05Stang said:
I was wondering if we want the actual PDF in there also though. I can add the # and description no problem. But, I think the actual PDFs are invaluable.

Whatca' think?

Jenn
i like that the best. lets see what you can do for us all. thanks jenn!!
 
Jenns05Stang said:
I was wondering if we want the actual PDF in there also though. I can add the # and description no problem. But, I think the actual PDFs are invaluable.

Whatca' think?

Jenn

Well if you scroll to the bottom of Mikes post..The files he listed are in there(download here it says)..But all in one Zip...I have them all saved individualy because the files to big to post like that.
I don't have enough space to post even one more TSB though...I'd have to dump someones pics..LOL(your days are numbered folks..sorry)
 
Uh huh...... ^What Dave said. Just because a Technical Service Bulletin has been issued does not mean that every car will exhibit the problem. It is a notification from Ford that SOME vehicles MAY exhibit the problem and if diagnosed by the technician - how to fix it and how to code it under warranty if applicable.

(I thought this was common knowledge - my bad!)

Jenn