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From: Figaro on 3 Aug 2010 21:17
My 1998 Avalon XLS has been idling rough and noisy (relatively) for a
few years now (It has 146k mi). When I first bought the car at 50k
mi, it was near-silent at idle and the RPM was under 1000.

I had replaced ignition coils and cleaned the throttle body valve last
year, that got it more smooth and quieter for a while. Now it's back
to being rough and noisy. The idle RPM never goes lower than 1500...
my mechanic says it's normal.

Any suggesions on what to do next?

Thanks!

From: hls on 4 Aug 2010 10:03

"Figaro" <ponsellite(a)gmail.com> wrote in message
news:a52c1020-c3a2-48ac-b4e6-a0881aa2859d(a)i4g2000prf.googlegroups.com...
> My 1998 Avalon XLS has been idling rough and noisy (relatively) for a
> few years now (It has 146k mi). When I first bought the car at 50k
> mi, it was near-silent at idle and the RPM was under 1000.
>
> I had replaced ignition coils and cleaned the throttle body valve last
> year, that got it more smooth and quieter for a while. Now it's back
> to being rough and noisy. The idle RPM never goes lower than 1500...
> my mechanic says it's normal.
>
> Any suggesions on what to do next?
>
> Thanks!

Have you ever replaced the ignition cables? I would hope so if you
replaced the coils.

I dont know when you are supposed to replace the timing belt or chain
on that one (and that is embarassing because we own a 2007 Avalon)
but it might be worth checking.

Vacuum leaks are always to be suspected when there are roughness and
idle issues.


From: Figaro on 4 Aug 2010 12:57
On Aug 4, 7:03 am, "hls" <h...(a)nospam.nix> wrote:
> "Figaro" <ponsell...(a)gmail.com> wrote in message
>
> news:a52c1020-c3a2-48ac-b4e6-a0881aa2859d(a)i4g2000prf.googlegroups.com...
>
> > My 1998 Avalon XLS has been idling rough and noisy (relatively) for a
> > few years now (It has 146k mi).   When I first bought the car at 50k
> > mi, it was near-silent at idle and the RPM was under 1000.
>
> > I had replaced ignition coils and cleaned the throttle body valve last
> > year, that got it more smooth and quieter for a while.  Now it's back
> > to being rough and noisy.  The idle RPM never goes lower than 1500...
> > my mechanic says it's normal.
>
> > Any suggesions on what to do next?
>
> > Thanks!
>
> Have you ever replaced the ignition cables?  I would hope so if you
> replaced the coils.
>
> I dont know when you are supposed to replace the timing belt or chain
> on that one (and that is embarassing because we own a 2007 Avalon)
> but it might be worth checking.
>
> Vacuum leaks are always to be suspected when there are roughness and
> idle issues.

I replaced the timing belt 40k mi ago. Will take it to my mechanic
this weekend for a checkup.

How do you like your '07 Avalon? To me that's just as smooth as a
Lexus ES and more roomy (and cheaper!)
From: hls on 5 Aug 2010 20:22

"Figaro" <ponsellite(a)gmail.com> wrote in message news:b8989db3-5ce7-
How do you like your '07 Avalon? To me that's just as smooth as a
Lexus ES and more roomy (and cheaper!)

It has been a dream car. Smooth, fast, and very economical. Never any
problems. This is the kind of ride I dreamed about as a young boy.

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