2002 V6 Camry (1MZ-FE) - wierd performance issue

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Old 28 Sep 2003, 04:06 am   #1 (permalink)
Michael Barry
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Default 2002 V6 Camry (1MZ-FE) - wierd performance issue

Hi,

I recently had my car serviced at 18,000kms, and it ran beautifully.

After filling the tank on the next occasion (using 98 octane fuel), it
started to, well...no longer drive as effortlessly, as if I was using a fuel
whose octane rating was too low. Nothing's actually 'faulty', but it's
certainly not what it was before.

When the A/C compressor kicks in, the idle speed will sometimes drop too low
down (around 600rpm) whereas normally it idles at around 800rpm. I remember
noticing this issue back when the car was newer and my mechanic advised me
to switch to a higher octane fuel (which I've been using ever since, and it
has worked).

Could I have filled up with a dud batch of fuel? Could it be that the
reservoir was connected to the wrong pump at the station or something?
Perhaps the oxygen/knock sensors are not working the way they should be, so
that the timing is not retarding as much as it should with leaner fuel. This
engine uses dual knock-sensors from my understanding.

I will try adding octane booster to the current tank of fuel and see if this
helps, but I suspect that the knock sensors are not doing their job,
somehow. Any advice, opinions or feedback would be much appreciated.

FWIW, I've just switched from a mineral blend oil to full synthetic, if that
helps.

Michael.


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Old 28 Sep 2003, 08:13 am   #2 (permalink)
Car Guy
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

I too own a 2002 Camry LE V6 and use only Esso (Exxon) 91 grade octane. I
didn't know 98 octane existed.

As for performance, I have no issues with my vehicle. I put a bottle of
Redline Complete Fuel System Cleaner SL1 every 5,000 KM and that keeps the
smoothness in acceleration. Here is the Redline info:
http://www.redlineoil.com/redlineoil/si1ti.htm

I also use Mobil 1 5W30 Synthetic oil and change it every 6,500 km to 7,000
km.


"Michael Barry" <msbarry@ihug.com.au> wrote in message
news:bl683g$r94$1@lust.ihug.co.nz...
> Hi,
>
> I recently had my car serviced at 18,000kms, and it ran beautifully.
>
> After filling the tank on the next occasion (using 98 octane fuel), it
> started to, well...no longer drive as effortlessly, as if I was using a

fuel
> whose octane rating was too low. Nothing's actually 'faulty', but it's
> certainly not what it was before.
>
> When the A/C compressor kicks in, the idle speed will sometimes drop too

low
> down (around 600rpm) whereas normally it idles at around 800rpm. I

remember
> noticing this issue back when the car was newer and my mechanic advised me
> to switch to a higher octane fuel (which I've been using ever since, and

it
> has worked).
>
> Could I have filled up with a dud batch of fuel? Could it be that the
> reservoir was connected to the wrong pump at the station or something?
> Perhaps the oxygen/knock sensors are not working the way they should be,

so
> that the timing is not retarding as much as it should with leaner fuel.

This
> engine uses dual knock-sensors from my understanding.
>
> I will try adding octane booster to the current tank of fuel and see if

this
> helps, but I suspect that the knock sensors are not doing their job,
> somehow. Any advice, opinions or feedback would be much appreciated.
>
> FWIW, I've just switched from a mineral blend oil to full synthetic, if

that
> helps.
>
> Michael.
>
>



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Old 28 Sep 2003, 09:13 am   #3 (permalink)
Michael Barry
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

Shell Optimax in Oz is rated at 98 RON. I assume the octane rating system
must be different between the US and Oz?

This fuel normally produces effortless acceleration compared with regular,
lower octane fuels which require a bit more of a heavy foot to get the same
results. Unfortunately, I'm getting these average results with this premium
fuel with the tank I'm currently on. Are bad batches possible? Has anyone
noticed differences like this from one tank to the next?

Michael.


"Car Guy" <nothing@something.com> wrote in message
news:y7Bdb.471$ab5.16737@news20.bellglobal.com...
> I too own a 2002 Camry LE V6 and use only Esso (Exxon) 91 grade octane. I
> didn't know 98 octane existed.
>
> As for performance, I have no issues with my vehicle. I put a bottle of
> Redline Complete Fuel System Cleaner SL1 every 5,000 KM and that keeps the
> smoothness in acceleration. Here is the Redline info:
> http://www.redlineoil.com/redlineoil/si1ti.htm
>
> I also use Mobil 1 5W30 Synthetic oil and change it every 6,500 km to

7,000
> km.
>
>
> "Michael Barry" <msbarry@ihug.com.au> wrote in message
> news:bl683g$r94$1@lust.ihug.co.nz...
> > Hi,
> >
> > I recently had my car serviced at 18,000kms, and it ran beautifully.
> >
> > After filling the tank on the next occasion (using 98 octane fuel), it
> > started to, well...no longer drive as effortlessly, as if I was using a

> fuel
> > whose octane rating was too low. Nothing's actually 'faulty', but it's
> > certainly not what it was before.
> >
> > When the A/C compressor kicks in, the idle speed will sometimes drop too

> low
> > down (around 600rpm) whereas normally it idles at around 800rpm. I

> remember
> > noticing this issue back when the car was newer and my mechanic advised

me
> > to switch to a higher octane fuel (which I've been using ever since, and

> it
> > has worked).
> >
> > Could I have filled up with a dud batch of fuel? Could it be that the
> > reservoir was connected to the wrong pump at the station or something?
> > Perhaps the oxygen/knock sensors are not working the way they should be,

> so
> > that the timing is not retarding as much as it should with leaner fuel.

> This
> > engine uses dual knock-sensors from my understanding.
> >
> > I will try adding octane booster to the current tank of fuel and see if

> this
> > helps, but I suspect that the knock sensors are not doing their job,
> > somehow. Any advice, opinions or feedback would be much appreciated.
> >
> > FWIW, I've just switched from a mineral blend oil to full synthetic, if

> that
> > helps.
> >
> > Michael.
> >
> >

>
>



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Old 28 Sep 2003, 09:14 am   #4 (permalink)
Car Guy
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

Michael,

Here is a list of Redline Dealers: http://www.redlineoil.com/dealers.htm .
Redline sells for about $11 Canadian a bottle but its well worth it.

Also, there have been some issues in Toronto, Canada with shell fuel as
their additives have been causing drivability issues with various vehicles
(Mercedes Benz, GM, Chrysler, etc.). I have been using Esso Premium
Unleaded fuel (91 octane) since day 1 on my car and I have no drivability
concerns. In my Camry manual, they recommend 91 octane or higher for
improved performance. I have used some Sunoco Ultra 94 octane and did not
find any difference in performance, except it costs more $$.

What I do is take the bottle of redline and put it in the tank when it is
1/4 full and then top off the tank with high octane fuel. I then drive the
car and refuel when the fuel gauge goes below 1/4 tank. This time around, I
put another bottle in the tank and topped it off again. I saw a big
improvement with 1 bottle, but not much with the second bottle. I find that
I can easily accelerate by just using my toe on the gas pedal. I hardly
have to push it to get the car to accelerate smoothly. On occasion when I
did use the entire foot to press the gas pedal down, I end up spinning tires
and look like a hot rod wanna be burning rubber in the sedan :^)


I put the fuel injector cleaner right before I plan on getting the oil
changed so that when the tank is empty and refueled with fuel, I then get
the oil changed. This means I use the Redline product every 6,000 km to
8,000 km. I use the product before oil changes just in case any particles
that come off the fuel system after cleaning do not circulate in the engine
oil.

Hope that helps.
"Michael Barry" <msbarry@ihug.com.au> wrote in message
news:bl6q45$9r3$1@lust.ihug.co.nz...
> Shell Optimax in Oz is rated at 98 RON. I assume the octane rating system
> must be different between the US and Oz?
>
> This fuel normally produces effortless acceleration compared with regular,
> lower octane fuels which require a bit more of a heavy foot to get the

same
> results. Unfortunately, I'm getting these average results with this

premium
> fuel with the tank I'm currently on. Are bad batches possible? Has anyone
> noticed differences like this from one tank to the next?
>
> Michael.
>
>
> "Car Guy" <nothing@something.com> wrote in message
> news:y7Bdb.471$ab5.16737@news20.bellglobal.com...
> > I too own a 2002 Camry LE V6 and use only Esso (Exxon) 91 grade octane.

I
> > didn't know 98 octane existed.
> >
> > As for performance, I have no issues with my vehicle. I put a bottle

of
> > Redline Complete Fuel System Cleaner SL1 every 5,000 KM and that keeps

the
> > smoothness in acceleration. Here is the Redline info:
> > http://www.redlineoil.com/redlineoil/si1ti.htm
> >
> > I also use Mobil 1 5W30 Synthetic oil and change it every 6,500 km to

> 7,000
> > km.
> >
> >
> > "Michael Barry" <msbarry@ihug.com.au> wrote in message
> > news:bl683g$r94$1@lust.ihug.co.nz...
> > > Hi,
> > >
> > > I recently had my car serviced at 18,000kms, and it ran beautifully.
> > >
> > > After filling the tank on the next occasion (using 98 octane fuel), it
> > > started to, well...no longer drive as effortlessly, as if I was using

a
> > fuel
> > > whose octane rating was too low. Nothing's actually 'faulty', but it's
> > > certainly not what it was before.
> > >
> > > When the A/C compressor kicks in, the idle speed will sometimes drop

too
> > low
> > > down (around 600rpm) whereas normally it idles at around 800rpm. I

> > remember
> > > noticing this issue back when the car was newer and my mechanic

advised
> me
> > > to switch to a higher octane fuel (which I've been using ever since,

and
> > it
> > > has worked).
> > >
> > > Could I have filled up with a dud batch of fuel? Could it be that the
> > > reservoir was connected to the wrong pump at the station or something?
> > > Perhaps the oxygen/knock sensors are not working the way they should

be,
> > so
> > > that the timing is not retarding as much as it should with leaner

fuel.
> > This
> > > engine uses dual knock-sensors from my understanding.
> > >
> > > I will try adding octane booster to the current tank of fuel and see

if
> > this
> > > helps, but I suspect that the knock sensors are not doing their job,
> > > somehow. Any advice, opinions or feedback would be much appreciated.
> > >
> > > FWIW, I've just switched from a mineral blend oil to full synthetic,

if
> > that
> > > helps.
> > >
> > > Michael.
> > >
> > >

> >
> >

>
>



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Old 28 Sep 2003, 11:59 am   #5 (permalink)
Mark A
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

"Michael Barry" <msbarry@ihug.com.au> wrote in message
news:bl683g$r94$1@lust.ihug.co.nz...
> Hi,
>
> I recently had my car serviced at 18,000kms, and it ran beautifully.
>
> After filling the tank on the next occasion (using 98 octane fuel), it
> started to, well...no longer drive as effortlessly, as if I was using a

fuel
> whose octane rating was too low. Nothing's actually 'faulty', but it's
> certainly not what it was before.
>
> When the A/C compressor kicks in, the idle speed will sometimes drop too

low
> down (around 600rpm) whereas normally it idles at around 800rpm. I

remember
> noticing this issue back when the car was newer and my mechanic advised me
> to switch to a higher octane fuel (which I've been using ever since, and

it
> has worked).
>
> Could I have filled up with a dud batch of fuel? Could it be that the
> reservoir was connected to the wrong pump at the station or something?
> Perhaps the oxygen/knock sensors are not working the way they should be,

so
> that the timing is not retarding as much as it should with leaner fuel.

This
> engine uses dual knock-sensors from my understanding.
>
> I will try adding octane booster to the current tank of fuel and see if

this
> helps, but I suspect that the knock sensors are not doing their job,
> somehow. Any advice, opinions or feedback would be much appreciated.
>
> FWIW, I've just switched from a mineral blend oil to full synthetic, if

that
> helps.
>
> Michael.
>

Could be bad fuel or something that clogged the fuel filter. Switch brands
(maybe to a midgrade) and see what happens. If the problem persists, you may
need to filter checked.


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Old 28 Sep 2003, 10:49 pm   #6 (permalink)
Michael Barry
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

I just checked with my mechanic, who felt that the problem must be a bad
batch of fuel (since he just serviced the car a week or so ago, he was able
to eliminate all other possibilities). Apparently it can happen, and I'm not
the first customer to mention this issue. He's also experienced it himself.

I will look into the fuel filter issue if the next tank of fuel of so
doesn't clear up the problem.

Thanks to the group for your help again!

Michael.

Michael.


"Mark A" <ma@switchboard.net> wrote in message
news:FsEdb.18$L54.44586@news.uswest.net...
> "Michael Barry" <msbarry@ihug.com.au> wrote in message
> news:bl683g$r94$1@lust.ihug.co.nz...
> > Hi,
> >
> > I recently had my car serviced at 18,000kms, and it ran beautifully.
> >
> > After filling the tank on the next occasion (using 98 octane fuel), it
> > started to, well...no longer drive as effortlessly, as if I was using a

> fuel
> > whose octane rating was too low. Nothing's actually 'faulty', but it's
> > certainly not what it was before.
> >
> > When the A/C compressor kicks in, the idle speed will sometimes drop too

> low
> > down (around 600rpm) whereas normally it idles at around 800rpm. I

> remember
> > noticing this issue back when the car was newer and my mechanic advised

me
> > to switch to a higher octane fuel (which I've been using ever since, and

> it
> > has worked).
> >
> > Could I have filled up with a dud batch of fuel? Could it be that the
> > reservoir was connected to the wrong pump at the station or something?
> > Perhaps the oxygen/knock sensors are not working the way they should be,

> so
> > that the timing is not retarding as much as it should with leaner fuel.

> This
> > engine uses dual knock-sensors from my understanding.
> >
> > I will try adding octane booster to the current tank of fuel and see if

> this
> > helps, but I suspect that the knock sensors are not doing their job,
> > somehow. Any advice, opinions or feedback would be much appreciated.
> >
> > FWIW, I've just switched from a mineral blend oil to full synthetic, if

> that
> > helps.
> >
> > Michael.
> >

> Could be bad fuel or something that clogged the fuel filter. Switch brands
> (maybe to a midgrade) and see what happens. If the problem persists, you

may
> need to filter checked.
>
>



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Old 30 Sep 2003, 08:55 am   #7 (permalink)
Michael Barry
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  • Posts: n/a
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Default Re: 2002 V6 Camry (1MZ-FE) - wierd performance issue

Just as a final follow up to those who may have been following this thread:

I added some Wynn's octane boost to the fuel that's currently in there to
see what would happen.

Several kilometres later, the smoothness we all know and love from our V6
Camry's is back!

So dud fuel it was.

Michael.
"Michael Barry" <msbarry@ihug.com.au> wrote in message
news:bl89u6$fsl$1@lust.ihug.co.nz...
> I just checked with my mechanic, who felt that the problem must be a bad
> batch of fuel (since he just serviced the car a week or so ago, he was

able
> to eliminate all other possibilities). Apparently it can happen, and I'm

not
> the first customer to mention this issue. He's also experienced it

himself.
>
> I will look into the fuel filter issue if the next tank of fuel of so
> doesn't clear up the problem.
>
> Thanks to the group for your help again!
>
> Michael.
>
> Michael.
>
>
> "Mark A" <ma@switchboard.net> wrote in message
> news:FsEdb.18$L54.44586@news.uswest.net...
> > "Michael Barry" <msbarry@ihug.com.au> wrote in message
> > news:bl683g$r94$1@lust.ihug.co.nz...
> > > Hi,
> > >
> > > I recently had my car serviced at 18,000kms, and it ran beautifully.
> > >
> > > After filling the tank on the next occasion (using 98 octane fuel), it
> > > started to, well...no longer drive as effortlessly, as if I was using

a
> > fuel
> > > whose octane rating was too low. Nothing's actually 'faulty', but it's
> > > certainly not what it was before.
> > >
> > > When the A/C compressor kicks in, the idle speed will sometimes drop

too
> > low
> > > down (around 600rpm) whereas normally it idles at around 800rpm. I

> > remember
> > > noticing this issue back when the car was newer and my mechanic

advised
> me
> > > to switch to a higher octane fuel (which I've been using ever since,

and
> > it
> > > has worked).
> > >
> > > Could I have filled up with a dud batch of fuel? Could it be that the
> > > reservoir was connected to the wrong pump at the station or something?
> > > Perhaps the oxygen/knock sensors are not working the way they should

be,
> > so
> > > that the timing is not retarding as much as it should with leaner

fuel.
> > This
> > > engine uses dual knock-sensors from my understanding.
> > >
> > > I will try adding octane booster to the current tank of fuel and see

if
> > this
> > > helps, but I suspect that the knock sensors are not doing their job,
> > > somehow. Any advice, opinions or feedback would be much appreciated.
> > >
> > > FWIW, I've just switched from a mineral blend oil to full synthetic,

if
> > that
> > > helps.
> > >
> > > Michael.
> > >

> > Could be bad fuel or something that clogged the fuel filter. Switch

brands
> > (maybe to a midgrade) and see what happens. If the problem persists, you

> may
> > need to filter checked.
> >
> >

>
>



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