Camry shaking when increasing speed

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Old 18 Feb 2005, 01:16 pm   #1 (permalink)
Bert
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Default Camry shaking when increasing speed

Since a few days my 1999 Camry starts shaking when I try to increase speed
(or drive up a (tiny) hill with steady speed). It happens at any speed, any
rpm. Once I have managed to reach the desired speed it drives fine, just
getting there is the problem. Any ideas what could be wrong?

Thanks,

Bert


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Old 18 Feb 2005, 01:17 pm   #2 (permalink)
badgolferman
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Default Re: Camry shaking when increasing speed

Bert wrote:
> Since a few days my 1999 Camry starts shaking when I try to increase
> speed (or drive up a (tiny) hill with steady speed). It happens at
> any speed, any rpm. Once I have managed to reach the desired speed it
> drives fine, just getting there is the problem. Any ideas what could
> be wrong?
>
> Thanks,
>
> Bert


I would say maybe motor mounts.


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Old 18 Feb 2005, 02:28 pm   #3 (permalink)
Bert
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Default Re: Camry shaking when increasing speed


"badgolferman" <REMOVETHISbadgolferman@gmail.com> schreef in bericht
news:37mta8F5gjahaU1@individual.net...
> Bert wrote:
> > Since a few days my 1999 Camry starts shaking when I try to increase
> > speed (or drive up a (tiny) hill with steady speed). It happens at
> > any speed, any rpm. Once I have managed to reach the desired speed it
> > drives fine, just getting there is the problem. Any ideas what could
> > be wrong?
> >
> > Thanks,
> >
> > Bert

>
> I would say maybe motor mounts.


Possibly (it's 9:30 pm and dark outside, so I'll check tomorrow), but when
the shaking starts I seem to loose a lot of power. Would that be consistent
with the motor mounts?

Bert


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Old 18 Feb 2005, 03:20 pm   #4 (permalink)
Jason James
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Default Re: Camry shaking when increasing speed


"Bert" <noreply@email.com> wrote in message
news:cv5j6g$2rl$1@news6.zwoll1.ov.home.nl...
>
> "badgolferman" <REMOVETHISbadgolferman@gmail.com> schreef in bericht
> news:37mta8F5gjahaU1@individual.net...
> > Bert wrote:
> > > Since a few days my 1999 Camry starts shaking when I try to increase
> > > speed (or drive up a (tiny) hill with steady speed). It happens at
> > > any speed, any rpm. Once I have managed to reach the desired speed it
> > > drives fine, just getting there is the problem. Any ideas what could
> > > be wrong?
> > >
> > > Thanks,
> > >
> > > Bert

> >
> > I would say maybe motor mounts.

>
> Possibly (it's 9:30 pm and dark outside, so I'll check tomorrow), but when
> the shaking starts I seem to loose a lot of power. Would that be

consistent
> with the motor mounts?
>
> Bert


In view of it losing power as well as vibrating:
Is it automatic transmission? Maybe its slipping altho there should be a low
sounding noise in that case. If it's manual, a worn slipping clutch will
slip and grab if its got oil on it leaking from the rear crankshaft seal.
Leaking rear c/shaft seals are not unusual if the car has had to few
oil-changes sometime in its life.

Maybe one cylinder is miss-firing under acceleration. This causes a lot of
vibration as the dead cylinder has good compression and constitutes an
unbalanced load on the other cylinders causing bad vibration. A common
cause is ignition breakdown under acceleration. The spark for the cyl in
question, goes to earth elsewhere than across the plug-gap. The increased
intake air-fuel charge presents a higher resistance once compressed around
the spark-plug electrodes,

Check the age of the plugs and mileage
Check spark- leads for resistance with an ohm meter should be less than 15k
ohms,..if OK consider replacing the distributor cap.

Jason


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Old 18 Feb 2005, 07:41 pm   #5 (permalink)
davidj92
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Default Re: Camry shaking when increasing speed

Jason James wrote:
> "Bert" <noreply@email.com> wrote in message
> news:cv5j6g$2rl$1@news6.zwoll1.ov.home.nl...
>>
>> "badgolferman" <REMOVETHISbadgolferman@gmail.com> schreef in bericht
>> news:37mta8F5gjahaU1@individual.net...
>>> Bert wrote:
>>>> Since a few days my 1999 Camry starts shaking when I try to
>>>> increase speed (or drive up a (tiny) hill with steady speed). It
>>>> happens at any speed, any rpm. Once I have managed to reach the
>>>> desired speed it drives fine, just getting there is the problem.
>>>> Any ideas what could be wrong?
>>>>
>>>> Thanks,
>>>>
>>>> Bert
>>>
>>> I would say maybe motor mounts.

>>
>> Possibly (it's 9:30 pm and dark outside, so I'll check tomorrow),
>> but when the shaking starts I seem to loose a lot of power. Would
>> that be consistent with the motor mounts?
>>
>> Bert

>
> In view of it losing power as well as vibrating:
> Is it automatic transmission? Maybe its slipping altho there should
> be a low sounding noise in that case. If it's manual, a worn slipping
> clutch will slip and grab if its got oil on it leaking from the rear
> crankshaft seal. Leaking rear c/shaft seals are not unusual if the
> car has had to few oil-changes sometime in its life.
>
> Maybe one cylinder is miss-firing under acceleration. This causes a
> lot of vibration as the dead cylinder has good compression and
> constitutes an unbalanced load on the other cylinders causing bad
> vibration. A common cause is ignition breakdown under acceleration.
> The spark for the cyl in question, goes to earth elsewhere than
> across the plug-gap. The increased intake air-fuel charge presents a
> higher resistance once compressed around the spark-plug electrodes,
>
> Check the age of the plugs and mileage
> Check spark- leads for resistance with an ohm meter should be less
> than 15k ohms,..if OK consider replacing the distributor cap.
>
> Jason


Good tips Jason. Another good check is to look at plug wires with engine
running in the dark. Many tiimes you can see the spark jumping or a blue
glow around the plug or wires. If so, check for loose connection and if not
then replace wires.
davidj92


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Old 19 Feb 2005, 07:23 am   #6 (permalink)
m Ransley
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Default Re: Camry shaking when increasing speed

I had a similar problem it was bad spark plug wires, could be a coil
to. Mine idled fine , under load it missed an was firing on 3 cilinders.
If wires are old replace them or testing it on a scope is needed so you
can put a load on it.

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Old 19 Feb 2005, 07:34 am   #7 (permalink)
m Ransley
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Default Re: Camry shaking when increasing speed

My last set of aftermarket plug wires failed after 30000m Go Toyota if
you can

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Old 20 Feb 2005, 10:59 am   #8 (permalink)
Bert
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Default Re: Camry shaking when increasing speed

m Ransley schreef

> I had a similar problem it was bad spark plug wires, could be a coil
> to. Mine idled fine , under load it missed an was firing on 3 cilinders.
> If wires are old replace them or testing it on a scope is needed so you
> can put a load on it.


It turned out to be a spark plug problem. Replaced the plugs and now it runs
fine. The plugs look like this:

http://members.home.nl\b.vandam\sparkplugs.jpg

I'm not sure however if this is the cause, or the symptom of something. Any
guesses?

Bert




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Old 20 Feb 2005, 11:29 am   #9 (permalink)
Philip
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Default Re: Camry shaking when increasing speed

Bert wrote:
> m Ransley schreef
>
>> I had a similar problem it was bad spark plug wires, could be a coil
>> to. Mine idled fine , under load it missed an was firing on 3
>> cilinders. If wires are old replace them or testing it on a scope is
>> needed so you can put a load on it.

>
> It turned out to be a spark plug problem. Replaced the plugs and now
> it runs fine. The plugs look like this:
>
> http://members.home.nl\b.vandam\sparkplugs.jpg
>
> I'm not sure however if this is the cause, or the symptom of
> something. Any guesses?
>
> Bert


VERY good. The second one from the top has two problems. The sealant
between the metal case and the porcelain has been leaking compression for a
long time. Second, obviously the porcelain has cracked clear up to the
terminal end. Cracking like this is often the result of using a deep socket
with one of those damned rubber grippers inside the socket. Porcelain is
very brittle and with these "grippers" it takes very little lateral pressure
to crack the porcelain.
--

- Philip



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Old 20 Feb 2005, 02:02 pm   #10 (permalink)
badgolferman
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Default Re: Camry shaking when increasing speed

Philip wrote:
> Bert wrote:
>> m Ransley schreef
>>
>>> I had a similar problem it was bad spark plug wires, could be a
>>> coil to. Mine idled fine , under load it missed an was firing on 3
>>> cilinders. If wires are old replace them or testing it on a scope is
>>> needed so you can put a load on it.

>>
>> It turned out to be a spark plug problem. Replaced the plugs and now
>> it runs fine. The plugs look like this:
>>
>> http://members.home.nl\b.vandam\sparkplugs.jpg
>>
>> I'm not sure however if this is the cause, or the symptom of
>> something. Any guesses?
>>
>> Bert

>
> VERY good. The second one from the top has two problems. The sealant
> between the metal case and the porcelain has been leaking compression
> for a long time. Second, obviously the porcelain has cracked clear
> up to the terminal end. Cracking like this is often the result of
> using a deep socket with one of those damned rubber grippers inside
> the socket. Porcelain is very brittle and with these "grippers" it
> takes very little lateral pressure to crack the porcelain.


I replaced my spark plugs yesterday. How are you supposed to do it without
the spark plug socket that has the rubber grippers inside? The hole is so
deep I wouldn't want to drop the plug in there and break something.


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