Low idle speed. Bad IAC?

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Old 31 Mar 2004, 08:19 pm   #1 (permalink)
Rick Weiss
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Default Low idle speed. Bad IAC?

Can someone confirm my diagnosis before I change my IAC valve?

I own a 99 Camry 4 cylinder. Recently it's had tendency to stall from
low idle speed immediately after starting. When it does this I need
to hold the gas pedal down a bit for a few seconds till it would idle
on its own. It was doing this only after sitting long enough to cool
down a bit but not completely cold. Now it is doing it even when cold
and I have to hold the gas down for several minutes before it will
idle on its own.

I believe this to be caused by a sticking IAC valve which is fairly
easy to change but I wanted to see if anyone would confirm this before
I do so.

Thanks for your help and opinions.

Brian
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Old 31 Mar 2004, 09:21 pm   #2 (permalink)
Philip®
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Default Re: Low idle speed. Bad IAC?

In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
> Can someone confirm my diagnosis before I change my IAC valve?
>
> I own a 99 Camry 4 cylinder. Recently it's had tendency to stall
> from low idle speed immediately after starting. When it does this
> I need to hold the gas pedal down a bit for a few seconds till it
> would idle on its own. It was doing this only after sitting long
> enough to cool down a bit but not completely cold. Now it is
> doing it even when cold and I have to hold the gas down for
> several minutes before it will idle on its own.
>
> I believe this to be caused by a sticking IAC valve which is fairly
> easy to change but I wanted to see if anyone would confirm this
> before I do so.
>
> Thanks for your help and opinions.
>
> Brian


What's your adversion to -cleaning- the IAC?
--

- Philip @ Maximum Torque RPM


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Old 31 Mar 2004, 09:27 pm   #3 (permalink)
Rick Weiss
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Default Re: Low idle speed. Bad IAC?

On Thu, 01 Apr 2004 03:21:05 GMT, "Philip®"
<1chip-state1@earthlink.net.invalid> wrote:

>In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
>Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
>> Can someone confirm my diagnosis before I change my IAC valve?
>>
>> I own a 99 Camry 4 cylinder. Recently it's had tendency to stall
>> from low idle speed immediately after starting. When it does this
>> I need to hold the gas pedal down a bit for a few seconds till it
>> would idle on its own. It was doing this only after sitting long
>> enough to cool down a bit but not completely cold. Now it is
>> doing it even when cold and I have to hold the gas down for
>> several minutes before it will idle on its own.
>>
>> I believe this to be caused by a sticking IAC valve which is fairly
>> easy to change but I wanted to see if anyone would confirm this
>> before I do so.
>>
>> Thanks for your help and opinions.
>>
>> Brian

>
>What's your adversion to -cleaning- the IAC?



No real aversion to cleaning it. I was expecting to need new IAC and
Throttle Body gaskets so I was going to pick up a new IAC valve at the
same time.
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Old 31 Mar 2004, 09:36 pm   #4 (permalink)
Philip®
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Default Re: Low idle speed. Bad IAC?

In news:vo2n60pnljfkcf2ibajtk217kh4emeht1q@4ax.com,
Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
> On Thu, 01 Apr 2004 03:21:05 GMT, "Philip®"
> <1chip-state1@earthlink.net.invalid> wrote:
>
> > In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
> > Rick Weiss <paddington@earthlink.net> being of bellicose mind
> > posted:
> > > Can someone confirm my diagnosis before I change my IAC valve?
> > >
> > > I own a 99 Camry 4 cylinder. Recently it's had tendency to
> > > stall from low idle speed immediately after starting. When it
> > > does this I need to hold the gas pedal down a bit for a few
> > > seconds till it would idle on its own. It was doing this only
> > > after sitting long enough to cool down a bit but not
> > > completely cold. Now it is doing it even when cold and I have
> > > to hold the gas down for several minutes before it will idle
> > > on its own.
> > >
> > > I believe this to be caused by a sticking IAC valve which is
> > > fairly easy to change but I wanted to see if anyone would
> > > confirm this before I do so.
> > >
> > > Thanks for your help and opinions.
> > >
> > > Brian

> >
> > What's your adversion to -cleaning- the IAC?

>
>
> No real aversion to cleaning it. I was expecting to need new IAC
> and Throttle Body gaskets so I was going to pick up a new IAC
> valve at the same time.


Oh. Bring MONEY.


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Old 31 Mar 2004, 10:03 pm   #5 (permalink)
Rick Weiss
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Default Re: Low idle speed. Bad IAC?

On Thu, 01 Apr 2004 03:36:19 GMT, "Philip®"
<1chip-state1@earthlink.net.invalid> wrote:

>In news:vo2n60pnljfkcf2ibajtk217kh4emeht1q@4ax.com,
>Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
>> On Thu, 01 Apr 2004 03:21:05 GMT, "Philip®"
>> <1chip-state1@earthlink.net.invalid> wrote:
>>
>> > In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
>> > Rick Weiss <paddington@earthlink.net> being of bellicose mind
>> > posted:
>> > > Can someone confirm my diagnosis before I change my IAC valve?
>> > >
>> > > I own a 99 Camry 4 cylinder. Recently it's had tendency to
>> > > stall from low idle speed immediately after starting. When it
>> > > does this I need to hold the gas pedal down a bit for a few
>> > > seconds till it would idle on its own. It was doing this only
>> > > after sitting long enough to cool down a bit but not
>> > > completely cold. Now it is doing it even when cold and I have
>> > > to hold the gas down for several minutes before it will idle
>> > > on its own.
>> > >
>> > > I believe this to be caused by a sticking IAC valve which is
>> > > fairly easy to change but I wanted to see if anyone would
>> > > confirm this before I do so.
>> > >
>> > > Thanks for your help and opinions.
>> > >
>> > > Brian
>> >
>> > What's your adversion to -cleaning- the IAC?

>>
>>
>> No real aversion to cleaning it. I was expecting to need new IAC
>> and Throttle Body gaskets so I was going to pick up a new IAC
>> valve at the same time.

>
>Oh. Bring MONEY.
>


Yeah, I just read another post referencing a $210 price tag for the
IAC valve. I read of several failed cleaning attempts that ended in
replacement of the valve to cure the problem. Have you any tips for
cleaning it? Remove it first or clean it somehow while its on the
car?
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Old 01 Apr 2004, 12:30 am   #6 (permalink)
Philip®
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Default Re: Low idle speed. Bad IAC?

In news:1k4n60h36nl25tmfr9qrr73v8ohgo9o56d@4ax.com,
Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
> On Thu, 01 Apr 2004 03:36:19 GMT, "Philip®"
> <1chip-state1@earthlink.net.invalid> wrote:
>
> > In news:vo2n60pnljfkcf2ibajtk217kh4emeht1q@4ax.com,
> > Rick Weiss <paddington@earthlink.net> being of bellicose mind
> > posted:
> > > On Thu, 01 Apr 2004 03:21:05 GMT, "Philip®"
> > > <1chip-state1@earthlink.net.invalid> wrote:
> > >
> > > > In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
> > > > Rick Weiss <paddington@earthlink.net> being of bellicose mind
> > > > posted:
> > > > > Can someone confirm my diagnosis before I change my IAC
> > > > > valve?
> > > > >
> > > > > I own a 99 Camry 4 cylinder. Recently it's had tendency to
> > > > > stall from low idle speed immediately after starting.
> > > > > When it does this I need to hold the gas pedal down a bit
> > > > > for a few seconds till it would idle on its own. It was
> > > > > doing this only after sitting long enough to cool down a
> > > > > bit but not completely cold. Now it is doing it even when
> > > > > cold and I have to hold the gas down for several minutes
> > > > > before it will idle on its own.
> > > > >
> > > > > I believe this to be caused by a sticking IAC valve which
> > > > > is fairly easy to change but I wanted to see if anyone
> > > > > would confirm this before I do so.
> > > > >
> > > > > Thanks for your help and opinions.
> > > > >
> > > > > Brian
> > > >
> > > > What's your adversion to -cleaning- the IAC?
> > >
> > >
> > > No real aversion to cleaning it. I was expecting to need new
> > > IAC and Throttle Body gaskets so I was going to pick up a new
> > > IAC valve at the same time.

> >
> > Oh. Bring MONEY.
> >

>
> Yeah, I just read another post referencing a $210 price tag for the
> IAC valve. I read of several failed cleaning attempts that ended
> in replacement of the valve to cure the problem. Have you any
> tips for cleaning it? Remove it first or clean it somehow while
> its on the car?


Personally, I prefer to clean IACs and throttle bodys OFF THE CAR.
Reason ... I do not wish to risk fouling the O2 sensor(s) nor the A/F
sensor (located after the catalyst & ... much more expensive).


--

- Philip @ Maximum Torque RPM


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Old 01 Apr 2004, 04:44 am   #7 (permalink)
Rick Weiss
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Default Re: Low idle speed. Bad IAC?

On Thu, 01 Apr 2004 06:30:34 GMT, "Philip®"
<1chip-state1@earthlink.net.invalid> wrote:

>In news:1k4n60h36nl25tmfr9qrr73v8ohgo9o56d@4ax.com,
>Rick Weiss <paddington@earthlink.net> being of bellicose mind posted:
>> On Thu, 01 Apr 2004 03:36:19 GMT, "Philip®"
>> <1chip-state1@earthlink.net.invalid> wrote:
>>
>> > In news:vo2n60pnljfkcf2ibajtk217kh4emeht1q@4ax.com,
>> > Rick Weiss <paddington@earthlink.net> being of bellicose mind
>> > posted:
>> > > On Thu, 01 Apr 2004 03:21:05 GMT, "Philip®"
>> > > <1chip-state1@earthlink.net.invalid> wrote:
>> > >
>> > > > In news:k0um609ti0gt90g1i0nhhhm75t3eerehgl@4ax.com,
>> > > > Rick Weiss <paddington@earthlink.net> being of bellicose mind
>> > > > posted:
>> > > > > Can someone confirm my diagnosis before I change my IAC
>> > > > > valve?
>> > > > >
>> > > > > I own a 99 Camry 4 cylinder. Recently it's had tendency to
>> > > > > stall from low idle speed immediately after starting.
>> > > > > When it does this I need to hold the gas pedal down a bit
>> > > > > for a few seconds till it would idle on its own. It was
>> > > > > doing this only after sitting long enough to cool down a
>> > > > > bit but not completely cold. Now it is doing it even when
>> > > > > cold and I have to hold the gas down for several minutes
>> > > > > before it will idle on its own.
>> > > > >
>> > > > > I believe this to be caused by a sticking IAC valve which
>> > > > > is fairly easy to change but I wanted to see if anyone
>> > > > > would confirm this before I do so.
>> > > > >
>> > > > > Thanks for your help and opinions.
>> > > > >
>> > > > > Brian
>> > > >
>> > > > What's your adversion to -cleaning- the IAC?
>> > >
>> > >
>> > > No real aversion to cleaning it. I was expecting to need new
>> > > IAC and Throttle Body gaskets so I was going to pick up a new
>> > > IAC valve at the same time.
>> >
>> > Oh. Bring MONEY.
>> >

>>
>> Yeah, I just read another post referencing a $210 price tag for the
>> IAC valve. I read of several failed cleaning attempts that ended
>> in replacement of the valve to cure the problem. Have you any
>> tips for cleaning it? Remove it first or clean it somehow while
>> its on the car?

>
>Personally, I prefer to clean IACs and throttle bodys OFF THE CAR.
>Reason ... I do not wish to risk fouling the O2 sensor(s) nor the A/F
>sensor (located after the catalyst & ... much more expensive).


Philip, Thanks for the tips and advice. I'll try cleaning it this
weekend if I can get a break in the weather.


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