Thanks Guys:
No David, the tranny seems to perform beautifully.
Ray (my brother's name), I appreciate your inputs, which I have noticed
for
a couple years. The knock (or ping) is not audible while idling. At
least,
not to my aging ears. The most interesting thing to me is that the knock
almost disappears after the engine warms up to operating temperature.
Today is Saturday and my appointment is Monday with the dealer. I'll let
you all know what the dealer says!
Graybeard
"Ray O" <rokigawaATtristarassociatesDOTcom> wrote in message
news:4vKdnWol8eDZRXDanZ2dnUVZ_t-nnZ2d@[EMAIL PROTECTED]
>
> "Graybeard" <graybeard32@[EMAIL PROTECTED]
> wrote in message
> news:47ed7bd4$0$12554$4c368faf@[EMAIL PROTECTED]
>> My ES350 has developed an unusual sound. With only 10,000 miles on it,
>> and burning Premium (what a misnomer) gasoline, it is making a ticking
>> sound when I accelerate. The sound was not noticed until it got cold
>> here in Florida and the AC was turned off.
>>
>> Also, the sound is loudest when the engine is cold. When the temp
reaches
>> normal, the sound is barely audible. It is also most noticeable when
>> accelerating up a hill.
>>
>> The tick-tick sound reminds me of the ping we heard due to pre-ignition
>> on the old cars. That is a sound that I haven't heard in years. Also,
I
>> recall a similar sound due to valve noise on the old OHV engines.
>>
>> I thought that the new computer controlled engines contained a "noise
>> detector" that adjusted the timing or something to prevent that
problem.
>>
>> Does anyone have any experience with this condition? I have an
>> appointment with the dealer in a few days, but feel that they are going
>> to ignore the problem and tell me that it is "natural" or some such
>> thing.
>>
>> Regards,
>> Graybeard
>
> Sounds are difficult to diagnose without experiencing them first hand.
> Your engine does have a knock sensor that detects engine knocking. If
> knocking is detected, the computer will retard the ignition timing until
> the pinging or knocking stops, usually within 3 seconds. If you hear
the
> sound while the engine is idling, it is probably not knocking or
pinging.
>
> --
>
> Ray O
> (correct punctuation to reply)
>
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