99 Camry V6 Engine very rough after heavy rain

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Old 11 Jun 2006, 11:31 pm   #1 (permalink)
Father Guido
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Default 99 Camry V6 Engine very rough after heavy rain

Hi,
My '99 Camry V6 parks outside. If it's been raining for a few hours
when I start it the engine is quite rough, some times the Check Engine
Light will even flash on and off.

If you've had any experience like this I'd like to know what might be
causing it. I've thought about the spark plugs wires, but are there
more likely candidates? The car runs smooth after a couple of miles,
and when not wet it is always silky smooth.

Thanks,

Norm
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Old 11 Jun 2006, 11:43 pm   #2 (permalink)
Mark A
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Default Re: 99 Camry V6 Engine very rough after heavy rain

"Father Guido" <FG@SNL.com> wrote in message
news:carp82p80r0kmoghevgnii4ogmb47qbov3@4ax.com...
> Hi,
> My '99 Camry V6 parks outside. If it's been raining for a few hours
> when I start it the engine is quite rough, some times the Check Engine
> Light will even flash on and off.
>
> If you've had any experience like this I'd like to know what might be
> causing it. I've thought about the spark plugs wires, but are there
> more likely candidates? The car runs smooth after a couple of miles,
> and when not wet it is always silky smooth.
>
> Thanks,
>
> Norm


Probably means that your engine computer is not handling the increased
moisture in the air to adjust the engine correctly. Could be a bad O2 sensor
or something similar (which would account for the check engine light
flashing on).


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Old 12 Jun 2006, 10:26 am   #3 (permalink)
m Ransley
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Default Re: 99 Camry V6 Engine very rough after heavy rain

The Coil or a loose or cracked distributor cap can do that, the camrys
with coil under the cap are well known for that. If coil is exposed
clean it and look for arching in the dark, It could also be bad plug
wires, but the engine light on is not what I would expect. Something is
shorting from moisture.

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Old 14 Jun 2006, 09:34 pm   #4 (permalink)
Father Guido
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Default Re: 99 Camry V6 Engine very rough after heavy rain

Thanks for the tips guys, I'll continue investigating.

Thanks again,

Norm
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Old 19 Jun 2006, 12:30 am   #5 (permalink)
Father Guido
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Default Re: 99 Camry V6 Engine very rough after heavy rain

On Sun, 11 Jun 2006 22:43:41 -0600, "Mark A" <nobody@nowhere.com>
wrote:

~"Father Guido" <FG@SNL.com> wrote in message
~news:carp82p80r0kmoghevgnii4ogmb47qbov3@4ax.com.. .
~> Hi,
~> My '99 Camry V6 parks outside. If it's been raining for a few hours
~> when I start it the engine is quite rough, some times the Check
Engine
~> Light will even flash on and off.
~>
~> If you've had any experience like this I'd like to know what might
be
~> causing it. I've thought about the spark plugs wires, but are there
~> more likely candidates? The car runs smooth after a couple of
miles,
~> and when not wet it is always silky smooth.
~>
~> Thanks,
~>
~> Norm
~
~Probably means that your engine computer is not handling the
increased
~moisture in the air to adjust the engine correctly. Could be a bad O2
sensor
~or something similar (which would account for the check engine light
~flashing on).
~

If you're still following, I checked the codes after the last heavy
rainstorm and got these codes.

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected

It is a V6, but I have no idea if the Cylinder 1 & 3 is significant or
not. If you have any further information please let me know.

Thanks,

Norm
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Old 19 Jun 2006, 06:05 am   #6 (permalink)
m Ransley
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Default Re: 99 Camry V6 Engine very rough after heavy rain

If it could talk the computer would be saying Replace Plug Wires,
Replace Coil.

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Old 20 Jun 2006, 12:58 am   #7 (permalink)
davemac
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Default Re: 99 Camry V6 Engine very rough after heavy rain


m Ransley wrote:
> If it could talk the computer would be saying Replace Plug Wires,
> Replace Coil.


The V6 uses an external coil I believe? If your wires have 100K+ on
them, replace them with toyota oem wires. Also replace your
distributor cap and rotor at the same time as a precaution because
those parts are cheap. Make sure you get a new distributor cap o-ring
too from the dealer. Check the health of your battery/alternator as
well because if you are getting a weak spark because of low voltage, it
will rear its head in this sort of situation.

dave mc

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Old 20 Jun 2006, 01:11 am   #8 (permalink)
Mark A
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Default Re: 99 Camry V6 Engine very rough after heavy rain

"davemac" <davemac2@yahoo.com> wrote in message
news:1150783085.311112.325450@b68g2000cwa.googlegr oups.com...
>
> The V6 uses an external coil I believe? If your wires have 100K+ on
> them, replace them with toyota oem wires. Also replace your
> distributor cap and rotor at the same time as a precaution because
> those parts are cheap. Make sure you get a new distributor cap o-ring
> too from the dealer. Check the health of your battery/alternator as
> well because if you are getting a weak spark because of low voltage, it
> will rear its head in this sort of situation.
>
> dave mc
>


Does a 99 have a distributor cap and rotor?


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Old 20 Jun 2006, 09:47 am   #9 (permalink)
Daniel
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Default Re: 99 Camry V6 Engine very rough after heavy rain

Mark A wrote:
> "davemac" <davemac2@yahoo.com> wrote in message
> news:1150783085.311112.325450@b68g2000cwa.googlegr oups.com...
> >
> > The V6 uses an external coil I believe? If your wires have 100K+ on
> > them, replace them with toyota oem wires. Also replace your
> > distributor cap and rotor at the same time as a precaution because
> > those parts are cheap. Make sure you get a new distributor cap o-ring
> > too from the dealer. Check the health of your battery/alternator as
> > well because if you are getting a weak spark because of low voltage, it
> > will rear its head in this sort of situation.
> >
> > dave mc
> >

>
> Does a 99 have a distributor cap and rotor?

=======================
I suspect it has individual coil packs for each cylinder - no
distributor.
High tension leads or coils could still be suspect though.
If it were me, I'd be using the Toyota factory service manual for that
car which gives detailed trouble shooting flow charts for testing each
component and evaluating the source of the misfire(s).
Sometimes you can find them reasonably priced on eBay, but even if you
pay a couple hundred dollars, you're going to earn that cost back first
time you solve a problem like this.

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