97up-list-digest Friday, June 5 1998 Volume 01 : Number 108



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Ford Truck Enthusiasts - 1997 and Newer Trucks and Vans
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In this issue:

Re: FTE 97up - Engine Knock on 97 Expedtion
FTE 97up - Triton badge
FTE 97up - Quality
Re: FTE 97up - Quality

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Date: Thu, 04 Jun 1998 19:47:04 -0700
From: WiNk
Subject: Re: FTE 97up - Engine Knock on 97 Expedtion

Mark,
Supposedly there is an octane jumper around the battery somewhere. The jumper is
supposed to alter the timing somehow. Maybe it is worth a look or two to see if
your dilema will go away.
BTW! I know it isn't my business but after reading your message I would believe
that knowing the needs of the lemon laws to make a case would be in order here.
If you don't have documentation then the case gets tougher to win. I'm not a
lawyer but I can remember a similar situation with Cadillac engines that failed.
The consumer ate the cost for a new engine. AND! a Ford financial manager had his
engine go when it just got out of the new warranty period and Ford wouldn't cover
the engine repair cost. The manager finally got it fixed under the ESP program
that he had to buy. I don't have to fill in the gaps between the new warranty
failure and the issuance of the ESP.

Caution is the word with your situation.



Mark Lee wrote:

> Thanks for the info Morgan. FYI I now have managed to reduce the noise
> on startup by switching to Mobil 1 synthetic oil. Whereas it used to
> knock for 3-5 minutes it now only knocks for 5-10 SECONDS! This has
> saved my sanity and hopefully some engine parts. Please keep me
> posted. Time for a letter to Ford. My warrantee will be up in a few
> months and I am not going to let this problem get sloughed off.
>
> Is it logical that the Mobil 1 made such a difference given the
> hypothesis regarding engine slap? The knock was really pronounced and
> it went away (almost entirely) the very day I changed the oil. It has
> been over 10 days now and it has not come back (other than muffled knock
> for first 5-10 seconds on cold startup.)
>
> Morgan wrote:
> >
> > On a previous post from Mark Lee, he was experiencing what Ford calls
> > "Cold Start Knock". It's primarly a 5.4L problem, but is/has occurred with
> > the 4.6L. The 5.4L is built only at the Windsor plant and they also produce
> > the 4.6L. I suspect a problem of quality control, due to the huge demand for
> > the 5.4L in the F-250LD's, Expeditions, and Navigators. My 97 F-150 5.4L
> > started knocking at 1600 miles and continues(it's getting worse) at 16000
> > miles. I have been in contact with several 5.4L and one 4.6L owner with the
> > same problem. Two of these people had engines replaced and the knock
> > returned(one was a new engine from Windsor and the other a rebuilt from a
> > Ford vendor). The Windsor plant continues to say they are "working" on the
> > problem and not to worry---I'm worried! They do tell me I will get a new
> > engine when the "problem" is fixed.
> > Basically this is piston slap inside the cylinder caused by the short
> > skirt on the Triton piston and excessive clearance. It happens upon
> > start-up when the engine is "cold"(hasn't been run for several hours). After
> > 3 to 5 minutes at idle, the piston(s) warm up and expand to "fill" the hole.
> > The knocking sound is a very distinct rattle somewhat like a deisel engine.
> > Mine seems to be coming from 2 or 3 clyinders. I'd like to hear from others
> > on this situation.
> > Dennis Morgan 406-265-2711 (office)
> > Havre, MT 406-265-2358 (home)
> >
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