Running without EGR

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Old 27 Sep 2005, 07:28 am   #1 (permalink)
Brent
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Default Running without EGR

My '94 4cyl camry was balking and stalling at idle. I disconnected the EGR,
and got relief, so I'm pretty sure that's where my issue lies. Dealer
agrees. In fact, the car runs better than ever.

What are the repercussions of running without it? (we don't have emissions
checks where I live).
thx
brent


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Old 27 Sep 2005, 08:07 am   #2 (permalink)
C. E. White
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Default Re: Running without EGR


"Brent" <Brent.Evered@gnb.ca> wrote in message
news:T1a_e.97357$Ph4.3064328@ursa-nb00s0.nbnet.nb.ca...
> My '94 4cyl camry was balking and stalling at idle. I disconnected the

EGR,
> and got relief, so I'm pretty sure that's where my issue lies. Dealer
> agrees. In fact, the car runs better than ever.
>
> What are the repercussions of running without it? (we don't have emissions
> checks where I live).


Spark knock, excessive NOx emissions, slight decrease in gas mileage.

I had a Fiesta with a plugged EGR years ago. During a high speed run (and I
mean flat out for a considerable period of time) I managed to burn a piston.
I knew the car was spark knocking during acceleration, but didn't think of
the consequences of running it flat out for a long period of time. After I
fixed the piston, I cleaned out the plugged EGR tube and life was good
again. When I was younger and dumber I tried disconnecting the EGR on other
cars. It never helped anything and usually resulted in undesirable side
efects (mostly noticeably spark knocking).

I'd suggest you fix the EGR. Since disconnecting it seemed to "fix" things,
I'd bet you have a bad valve, or a hole in the pipe from the exhaust system
to the valve.

Just because you don't have emissions testing, it doesn't mean you shouldn't
try to keep your car in a good state of repair. I assume you do breathe
where you live.

Ed


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Old 27 Sep 2005, 09:29 am   #3 (permalink)
Daniel
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Default Re: Running without EGR

> What are the repercussions of running without it? (we don't have emissions
> checks

~~~~~~~~~~~~~~~~
It will cause the temperatures in the combustion chambers to be too
high - too hot. (guessing potentially shorter exhaust valve life)
Once had a 1967 VW where EGR was added and the mechanic told me it
would run better without it. He was right.
But with the Camry's computer controls, and integrated design, you
should get more efficiency, and better engine longevity, by running as
designed.
Tip:
When I replaced the distributor O ring, and removed the distributor, I
found the connection of the EGR pipe to the engine was much more
visibile and accessible.

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Old 27 Sep 2005, 09:58 am   #4 (permalink)
Brent
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Default Re: Running without EGR

OK, thanks guys. Its going to be replaced. Car runs so fine for a 350,000
km machine, that I'd hate to compromise that for the sake of a few bucks.
Brent

"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1127827742.084332.319230@g44g2000cwa.googlegr oups.com...
>> What are the repercussions of running without it? (we don't have
>> emissions
>> checks

> ~~~~~~~~~~~~~~~~
> It will cause the temperatures in the combustion chambers to be too
> high - too hot. (guessing potentially shorter exhaust valve life)
> Once had a 1967 VW where EGR was added and the mechanic told me it
> would run better without it. He was right.
> But with the Camry's computer controls, and integrated design, you
> should get more efficiency, and better engine longevity, by running as
> designed.
> Tip:
> When I replaced the distributor O ring, and removed the distributor, I
> found the connection of the EGR pipe to the engine was much more
> visibile and accessible.
>



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Old 29 Sep 2005, 02:01 am   #5 (permalink)
johngdole@hotmail.com
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Default Re: Running without EGR

Try cleaning the EGR valve before replacing the part. I think it costs
$250 for the valve.

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Old 30 Sep 2005, 02:36 pm   #6 (permalink)
tbober
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Default Re: Re: Running without EGR

"" wrote:
> Try cleaning the EGR valve before replacing the part. I think
> it costs
> $250 for the valve.


Yup, $235 from KEM online from most distributors. BUT, $106 from AC
DELCO from the same distributors. Besides the fact that disconnecting
it could land you in prison since it is a federal requirement, burning
a toxic substance such as gasoline in an uncontrolled manner such as
in a vehicle whose smog equipment is modified or disconnected and not
fully tested for tailpipe output gases and compounds may well be
producing a potentially lethal or permanently disabling toxic
substance. Some people are not too concerned about this. And, some
people felt nothing when the twin towers fell on 9/11. Breathe easy.
Does this answer it for ya?

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