1990 Camry 3S-FE - Cold starting issue

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Old 08 May 2006, 10:43 pm   #1 (permalink)
Steven G.
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Default 1990 Camry 3S-FE - Cold starting issue


I'll put what I know in dot points

1. When cold the car takes up to 20 seconds to start.
2. If you hold the key at start for 20 seconds, after 15 seconds it stutters
before it starts.
3. After it has been started once it then starts immediately (Even if you
shut it off immediately after a cold start).
4. If you turn the key to start for 1/4 second, then back to run, and to
start again. It starts normally (<4 seconds) even if cold.
5. Battery seems good, this happens even after an overnight charge. Battery
holds its charge OK.
6. Starter motor sounds normal. We have another 1991 model and they sound
identical.
7. This has been happening for quite some time, and doesn't seem to be
getting any worse.

Any ideas as to where to start diagnosing this one?

Thanks

Steven
(Australia)


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Old 09 May 2006, 02:50 am   #2 (permalink)
Jason James
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Default Re: 1990 Camry 3S-FE - Cold starting issue


"Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>
> I'll put what I know in dot points
>
> 1. When cold the car takes up to 20 seconds to start.
> 2. If you hold the key at start for 20 seconds, after 15 seconds it

stutters
> before it starts.
> 3. After it has been started once it then starts immediately (Even if you
> shut it off immediately after a cold start).
> 4. If you turn the key to start for 1/4 second, then back to run, and to
> start again. It starts normally (<4 seconds) even if cold.
> 5. Battery seems good, this happens even after an overnight charge.

Battery
> holds its charge OK.
> 6. Starter motor sounds normal. We have another 1991 model and they sound
> identical.
> 7. This has been happening for quite some time, and doesn't seem to be
> getting any worse.
>
> Any ideas as to where to start diagnosing this one?
>
> Thanks


Sounds like ignition, as the car drives normally? Check the spark strength
by holding a well insulated screwdriver up one of the sparkplug leads at the
plug-end. Get an assistant to crank the engine. The spark should be blue and
jump at least a 1cm to the engine cam-cover. Obviously, hold the blade of
the screwdriver about a cm from the cover or engine block for this check.

If the spark is weak, check the lead's age, the year of manufactur is
usually on the leads,..next is the coil, Do a Google search (Groups) for
this NG with "coil resistance" measurements as a filter. You'll need an
ohm-meter. A workshop-manual is a useful guide.

Jason


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Old 09 May 2006, 06:41 am   #3 (permalink)
jg
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Default Re: 1990 Camry 3S-FE - Cold starting issue


"Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>
> I'll put what I know in dot points
>
> 1. When cold the car takes up to 20 seconds to start.
> 2. If you hold the key at start for 20 seconds, after 15 seconds it

stutters
> before it starts.
> 3. After it has been started once it then starts immediately (Even if you
> shut it off immediately after a cold start).
> 4. If you turn the key to start for 1/4 second, then back to run, and to
> start again. It starts normally (<4 seconds) even if cold.


Some cars (don't know about these) have an electric fuel pump which runs on
the key for a few seconds before ignition, or after the first attempt. They
sometimes respond to the key pause as you describe, when there's a small
leak in the line or weakness in the pump.


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Old 11 May 2006, 04:32 am   #4 (permalink)
Steven G.
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Default Re: 1990 Camry 3S-FE - Cold starting issue

Thanks.
Did some tests today, and I think I have rules out spark as the problem.
Spark looks good, and plugs are dry when pulled from the engine, indicating
no fuel.

Thanks for your suggestion.

"Jason James" <Cleveland@351.factory.4v> wrote in message
news:446049df$1@news.comindico.com.au...
>
> "Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
> news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>>
>> I'll put what I know in dot points
>>
>> 1. When cold the car takes up to 20 seconds to start.
>> 2. If you hold the key at start for 20 seconds, after 15 seconds it

> stutters
>> before it starts.
>> 3. After it has been started once it then starts immediately (Even if you
>> shut it off immediately after a cold start).
>> 4. If you turn the key to start for 1/4 second, then back to run, and to
>> start again. It starts normally (<4 seconds) even if cold.
>> 5. Battery seems good, this happens even after an overnight charge.

> Battery
>> holds its charge OK.
>> 6. Starter motor sounds normal. We have another 1991 model and they sound
>> identical.
>> 7. This has been happening for quite some time, and doesn't seem to be
>> getting any worse.
>>
>> Any ideas as to where to start diagnosing this one?
>>
>> Thanks

>
> Sounds like ignition, as the car drives normally? Check the spark strength
> by holding a well insulated screwdriver up one of the sparkplug leads at
> the
> plug-end. Get an assistant to crank the engine. The spark should be blue
> and
> jump at least a 1cm to the engine cam-cover. Obviously, hold the blade of
> the screwdriver about a cm from the cover or engine block for this check.
>
> If the spark is weak, check the lead's age, the year of manufactur is
> usually on the leads,..next is the coil, Do a Google search (Groups) for
> this NG with "coil resistance" measurements as a filter. You'll need an
> ohm-meter. A workshop-manual is a useful guide.
>
> Jason
>
>



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Old 11 May 2006, 06:04 am   #5 (permalink)
Steven G.
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Default Re: 1990 Camry 3S-FE - Cold starting issue

I'm thinking this may be it. We bought the car second hand, so who knows.

Anyway, I'm going to diagnose the fuel system tomorrow.

Thanks for your response.


"jg" <jg@nospam.com> wrote in message
news:id%7g.563$S7.14@news-server.bigpond.net.au...
>
> "Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
> news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>>
>> I'll put what I know in dot points
>>
>> 1. When cold the car takes up to 20 seconds to start.
>> 2. If you hold the key at start for 20 seconds, after 15 seconds it

> stutters
>> before it starts.
>> 3. After it has been started once it then starts immediately (Even if you
>> shut it off immediately after a cold start).
>> 4. If you turn the key to start for 1/4 second, then back to run, and to
>> start again. It starts normally (<4 seconds) even if cold.

>
> Some cars (don't know about these) have an electric fuel pump which runs
> on
> the key for a few seconds before ignition, or after the first attempt.
> They
> sometimes respond to the key pause as you describe, when there's a small
> leak in the line or weakness in the pump.
>
>



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Old 11 May 2006, 08:46 am   #6 (permalink)
Daniel
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Default Re: 1990 Camry 3S-FE - Cold starting issue

search this group for "IAC" or "idle" and "control"

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Old 13 May 2006, 12:16 am   #7 (permalink)
Sam Jung
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Default Re: 1990 Camry 3S-FE - Cold starting issue

Check cold start injector control circuit

"Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>
> I'll put what I know in dot points
>
> 1. When cold the car takes up to 20 seconds to start.
> 2. If you hold the key at start for 20 seconds, after 15 seconds it
> stutters before it starts.
> 3. After it has been started once it then starts immediately (Even if you
> shut it off immediately after a cold start).
> 4. If you turn the key to start for 1/4 second, then back to run, and to
> start again. It starts normally (<4 seconds) even if cold.
> 5. Battery seems good, this happens even after an overnight charge.
> Battery holds its charge OK.
> 6. Starter motor sounds normal. We have another 1991 model and they sound
> identical.
> 7. This has been happening for quite some time, and doesn't seem to be
> getting any worse.
>
> Any ideas as to where to start diagnosing this one?
>
> Thanks
>
> Steven
> (Australia)
>
>
>



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Old 14 May 2006, 06:31 am   #8 (permalink)
Steven G.
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Default Re: 1990 Camry 3S-FE - Cold starting issue

Thanks to everyone who replied.

I purchased some Carby cleaner and cleaned out the throttle body. So far it
seems to have cleared up the problem (along with the sticky throttle!), but
time will tell.

Thanks to Daniel for mentioning about the IAC/ISC Valve


"Steven G." <steven.georgeNOSPAM@telstra.com> wrote in message
news:VdU7g.285$S7.273@news-server.bigpond.net.au...
>
> I'll put what I know in dot points
>
> 1. When cold the car takes up to 20 seconds to start.
> 2. If you hold the key at start for 20 seconds, after 15 seconds it
> stutters before it starts.
> 3. After it has been started once it then starts immediately (Even if you
> shut it off immediately after a cold start).
> 4. If you turn the key to start for 1/4 second, then back to run, and to
> start again. It starts normally (<4 seconds) even if cold.
> 5. Battery seems good, this happens even after an overnight charge.
> Battery holds its charge OK.
> 6. Starter motor sounds normal. We have another 1991 model and they sound
> identical.
> 7. This has been happening for quite some time, and doesn't seem to be
> getting any worse.
>
> Any ideas as to where to start diagnosing this one?
>
> Thanks
>
> Steven
> (Australia)
>
>



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