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From: doncee on 11 Apr 2007 04:49
>
> What Worked: Disconnected my EGR valve, and placed a
> 3-inch nail in the vacuum line. Car didn't stall anymore,
> but I didn't want to risk the higher engine temperature,
> and I wasn't too comfortable with the knowledge I'd fail a
> smog check. Worked when I had absolutely no choice though
> (stalling like crazy on a city street; pulled over, put the
> nail in, no problem).
>
> Now that I knew it was the EGR system, I had to narrow it
> down to: EGR valve, EGR modulator, vacuum switching valve,
> or some leaking vacuum line.
>
> I took out the EGR valve, and cleaned it (twice) with
> throttle plate cleaner. It didn't hold vacuum very well
> (vacuum pump had it losing pressure slowly), but at least
> it would spring back to the CLOSED position fairly quickly.
>
> Took a chance: borrowed the EGR modulator from my wife's
> '99 Camry (some research showed the parts are
> interchangeable), then drove around with that in my '96
> Camry. 30 mile trip; no stall.
>
> Notes: My mechanic said they would charge $85 just to LOOK
> at the problem. That got me motivated to disassemble the
> throttle body and IAC valve (which the mechanic said was a
> usual problem with these Camrys). Ordinarily I wouldn't do
> that.
>
> Posting here, in the hope this will be of use to someone.
>
> Michael
>

Thanks for the post & info. Should be of great value to someone
experiencing similiar probs.
dc
From: EdV on 11 Apr 2007 09:25
I hear alot of EGR problems, is this something you have to replace
every 100k-150k?? miles? is there anything you can do to prevent
premature failure of EGRs?

From: mrdarrett on 11 Apr 2007 11:36
On Apr 11, 6:25 am, "EdV" <edramirvent...(a)gmail.com> wrote:
> I hear alot of EGR problems, is this something you have to replace
> every 100k-150k?? miles? is there anything you can do to prevent
> premature failure of EGRs?


Good question. From what I've read, Toyota seems to design parts
(like radiators) to last only 10 years or so, on the philosophy that,
if it breaks after 10 years, you can't really complain. And compared
to some American cars, I guess they're right...

It seems that the EGR valve might need cleaning every 100k miles or so
(especially considering its job: piping dirty exhaust back into the
intake manifold), but it's really difficult to remove - I had to
remove it from the engine block, and to get there, you have to remove
the air hose and throttle body (or at least I did).

I've also heard that if you fail a smog check, the EGR valve is a
prime suspect.

One hint I had about the EGR modulator was a small spot of black stuff
on the inside filter of the EGR modulator. I found a thread somewhere
on the web that had a picture of a really gray EGR modulator filter -
and someone replied that the EGR modulator had ruptured, piping
exhaust through the filter (which shouldn't happen) - and to replace
the part.

I'm tempted to just go to the local junkyard to find a replacement EGR
modulator - guy quoted me $10. Pretty easy to install, once you've
swapped it out a few times. ;-)

Otherwise, I'd go to www.toyotadiscountparts.com. The part number is
25870-74090. It's about $44 there, but need to order $100 worth of
parts to get the free shipping. Hmm...

Regards,

Michael

From: James Spencer on 11 Apr 2007 14:02
<mrdarrett(a)gmail.com> wrote in message
news:1176305807.573461.197450(a)n76g2000hsh.googlegroups.com...
> On Apr 11, 6:25 am, "EdV" <edramirvent...(a)gmail.com> wrote:
>> I hear alot of EGR problems, is this something you have to replace
>> every 100k-150k?? miles? is there anything you can do to prevent
>> premature failure of EGRs?
>
>
> Good question. From what I've read, Toyota seems to design parts
> (like radiators) to last only 10 years or so, on the philosophy that,
> if it breaks after 10 years, you can't really complain. And compared
> to some American cars, I guess they're right...
>
> It seems that the EGR valve might need cleaning every 100k miles or so
> (especially considering its job: piping dirty exhaust back into the
> intake manifold), but it's really difficult to remove - I had to
> remove it from the engine block, and to get there, you have to remove
> the air hose and throttle body (or at least I did).
>
> I've also heard that if you fail a smog check, the EGR valve is a
> prime suspect.
>
> One hint I had about the EGR modulator was a small spot of black stuff
> on the inside filter of the EGR modulator. I found a thread somewhere
> on the web that had a picture of a really gray EGR modulator filter -
> and someone replied that the EGR modulator had ruptured, piping
> exhaust through the filter (which shouldn't happen) - and to replace
> the part.
>
> I'm tempted to just go to the local junkyard to find a replacement EGR
> modulator - guy quoted me $10. Pretty easy to install, once you've
> swapped it out a few times. ;-)
>
> Otherwise, I'd go to www.toyotadiscountparts.com. The part number is
> 25870-74090. It's about $44 there, but need to order $100 worth of
> parts to get the free shipping. Hmm...
>
> Regards,
>
> Michael
>
I had problems with my 1990 Camry having no power at higher rpm and heating
up when doing 100km/h. I tried to replace the EGR valve as well as the
modulator to no avail. Another symptom was that it was blowing off the
vacuum hose from the EGR valve. I'm thinking that the catalytic convertor
is plugged and will be replacing it tomorrow. Let you know how it goes.



--
Posted via a free Usenet account from http://www.teranews.com

From: Daniel on 11 Apr 2007 18:05
mrdarrett(a)gmail.com wrote:
> Good question. From what I've read, Toyota seems to design parts
> (like radiators) to last only 10 years or so, on the philosophy that,
> if it breaks after 10 years, you can't really complain.
===
Here's a link to a million mile Toyota. Tends to refute the idea that
parts are designed for limited life.
http://www.racetoretirement.org/

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