high idle

badgolferman wrote:
> They told me they cleaned the throttle body. Is 1000 RPM at idle
> normal?
==
Unless the specification has changed, it used to be 750 rpm +/- 50.
Sounds like you need to take it back.
Again, unless newer models are different, the idle speed is computer
controlled, therefore not adjustable.
If they removed the throttle body for cleaning, it is possible the
throttle position sensor was adjusted. The TPS has an "IDL" contact
and the adjustment procedure calls for measuring in thousandths of an
inch with a thickness gauge simultaneously watching for electrical
continuity at the appropriate terminals.
Sorry, forgotten the proper name, but there is also a throttle
position stop, with a vacuum operated plunger that should be adjusted
correctly when the throttle body is reinstalled that could affect the
idle speed.
My understanding is that throttle body cleaning at the dealer can
involve removing the throttle body. The Factory Service manual has all
the adjustment procedures described in connection with throttle body
removal, so it is possible that some of the procedures performed
improperly are causing the high idle.
If you follow step by step, none are particularly difficult, so one
wouldn't expect a problem in this area, but then again the idle speed
is electronically controlled, so it shouldn't be changing either.
 >> Stay informed about: high idle 

"badgolferman" wrote in message

> 2000 Sienna 105K miles
>
> Got a tuneup today and had both valve cover gaskets replaced. Engine
> idles much higher than it did before. When warmed up and in Neutral or
> Park it hovers around 1000 RPM or just a tad higher; I am used to it
> being nearer 800 RPM. I was getting lousy gas mileage before I took it
> in and fear it will be worse now, not to mention that it just feels
> wrong.
>
> Rather than taking it back to the dealer is there anything I can do to
> settle it down a bit? It's a pain to make arrangements for service and
> drop-offs, etc.

Get a can of carburetor or throttle body cleaner and try cleaning the idle
air control (IAC) valve. The IAC valve is attached to the throttle body and
has a slide that varies the size of an opening that allows air to bypass the
closed throttle plate. Carb cleaner is pretty flammable, so keep sources of
heat away when using.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: high idle 

wrote in message

> badgolferman wrote:
>> They told me they cleaned the throttle body. Is 1000 RPM at idle
>> normal?
> ==
> Unless the specification has changed, it used to be 750 rpm +/- 50.
> Sounds like you need to take it back.
> Again, unless newer models are different, the idle speed is computer
> controlled, therefore not adjustable.
> If they removed the throttle body for cleaning, it is possible the
> throttle position sensor was adjusted. The TPS has an "IDL" contact
> and the adjustment procedure calls for measuring in thousandths of an
> inch with a thickness gauge simultaneously watching for electrical
> continuity at the appropriate terminals.
> Sorry, forgotten the proper name, but there is also a throttle
> position stop, with a vacuum operated plunger that should be adjusted
> correctly when the throttle body is reinstalled that could affect the
> idle speed.
> My understanding is that throttle body cleaning at the dealer can
> involve removing the throttle body. The Factory Service manual has all
> the adjustment procedures described in connection with throttle body
> removal, so it is possible that some of the procedures performed
> improperly are causing the high idle.
> If you follow step by step, none are particularly difficult, so one
> wouldn't expect a problem in this area, but then again the idle speed
> is electronically controlled, so it shouldn't be changing either.
>

Most dealer technicians just remove the plastic snorkel from the throttle
body and clean the throttle body in place. I have never seen a dealership
technician actually remove the throttle body to clean it.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: high idle 

Ray O, 2/22/2007,11:12:35 AM, wrote:

>
> "badgolferman" wrote in message
>
> > 2000 Sienna 105K miles
> >
> > Got a tuneup today and had both valve cover gaskets replaced.
> > Engine idles much higher than it did before. When warmed up and in
> > Neutral or Park it hovers around 1000 RPM or just a tad higher; I
> > am used to it being nearer 800 RPM. I was getting lousy gas
> > mileage before I took it in and fear it will be worse now, not to
> > mention that it just feels wrong.
> >
> > Rather than taking it back to the dealer is there anything I can do
> > to settle it down a bit? It's a pain to make arrangements for
> > service and drop-offs, etc.
>
> Get a can of carburetor or throttle body cleaner and try cleaning the
> idle air control (IAC) valve. The IAC valve is attached to the
> throttle body and has a slide that varies the size of an opening that
> allows air to bypass the closed throttle plate. Carb cleaner is
> pretty flammable, so keep sources of heat away when using.

They told me they cleaned the throttle body. Is 1000 RPM at idle
normal?
 >> Stay informed about: high idle 

"badgolferman" wrote in message

> Ray O, 2/22/2007,11:12:35 AM, wrote:
>
>>
>> "badgolferman" wrote in message
>>
>> > 2000 Sienna 105K miles
>> >
>> > Got a tuneup today and had both valve cover gaskets replaced.
>> > Engine idles much higher than it did before. When warmed up and in
>> > Neutral or Park it hovers around 1000 RPM or just a tad higher; I
>> > am used to it being nearer 800 RPM. I was getting lousy gas
>> > mileage before I took it in and fear it will be worse now, not to
>> > mention that it just feels wrong.
>> >
>> > Rather than taking it back to the dealer is there anything I can do
>> > to settle it down a bit? It's a pain to make arrangements for
>> > service and drop-offs, etc.
>>
>> Get a can of carburetor or throttle body cleaner and try cleaning the
>> idle air control (IAC) valve. The IAC valve is attached to the
>> throttle body and has a slide that varies the size of an opening that
>> allows air to bypass the closed throttle plate. Carb cleaner is
>> pretty flammable, so keep sources of heat away when using.
>
> They told me they cleaned the throttle body. Is 1000 RPM at idle
> normal?

1000 RPM when the engine is cold sounds about right but I would imagine that
it should be lower after the engine has warmed up. There may be a sticker
in the engine compartment that shows correct idle speed.

Cleaning the throttle body does not necessarily include cleaning the IAC
valve, and it is possible that gunk that got washed off of the throttle body
became lodged in the IAC valve.

There are a few other things that can cause high idle, like the AC
compressor circuit, power steering pump circuit, coolant temperature
sensors, mis-adjusted throttle cable, sticking cruise control actuator, etc.
but I would start with the basics, especially if the other stuff was not
disturbed.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: high idle 

Ray O, 2/22/2007,12:23:45 PM, wrote:

>
> wrote in message
>
> > badgolferman wrote:
> > > They told me they cleaned the throttle body. Is 1000 RPM at idle
> > > normal?
> > ==
> > Unless the specification has changed, it used to be 750 rpm +/- 50.
> > Sounds like you need to take it back.
> > Again, unless newer models are different, the idle speed is computer
> > controlled, therefore not adjustable.
> > If they removed the throttle body for cleaning, it is possible the
> > throttle position sensor was adjusted. The TPS has an "IDL" contact
> > and the adjustment procedure calls for measuring in thousandths of
> > an inch with a thickness gauge simultaneously watching for
> > electrical continuity at the appropriate terminals.
> > Sorry, forgotten the proper name, but there is also a throttle
> > position stop, with a vacuum operated plunger that should be
> > adjusted correctly when the throttle body is reinstalled that could
> > affect the idle speed.
> > My understanding is that throttle body cleaning at the dealer can
> > involve removing the throttle body. The Factory Service manual has
> > all the adjustment procedures described in connection with throttle
> > body removal, so it is possible that some of the procedures
> > performed improperly are causing the high idle.
> > If you follow step by step, none are particularly difficult, so one
> > wouldn't expect a problem in this area, but then again the idle
> > speed is electronically controlled, so it shouldn't be changing
> > either.
> >
>
> Most dealer technicians just remove the plastic snorkel from the
> throttle body and clean the throttle body in place. I have never
> seen a dealership technician actually remove the throttle body to
> clean it.

The Check Engine light came on today. I called back and told them how
upset I was with this and asked for a loaner car until they fix it.
They offered to see me first thing tomorrow and work on it. I don't
know what else to do now but I must drive it this evening to work and
back. Hopefully the problem won't harm the engine.
 >> Stay informed about: high idle 

"badgolferman" wrote in message

> Ray O, 2/22/2007,12:23:45 PM, wrote:
>
>>
>> wrote in message
>>
>> > badgolferman wrote:
>> > > They told me they cleaned the throttle body. Is 1000 RPM at idle
>> > > normal?
>> > ==
>> > Unless the specification has changed, it used to be 750 rpm +/- 50.
>> > Sounds like you need to take it back.
>> > Again, unless newer models are different, the idle speed is computer
>> > controlled, therefore not adjustable.
>> > If they removed the throttle body for cleaning, it is possible the
>> > throttle position sensor was adjusted. The TPS has an "IDL" contact
>> > and the adjustment procedure calls for measuring in thousandths of
>> > an inch with a thickness gauge simultaneously watching for
>> > electrical continuity at the appropriate terminals.
>> > Sorry, forgotten the proper name, but there is also a throttle
>> > position stop, with a vacuum operated plunger that should be
>> > adjusted correctly when the throttle body is reinstalled that could
>> > affect the idle speed.
>> > My understanding is that throttle body cleaning at the dealer can
>> > involve removing the throttle body. The Factory Service manual has
>> > all the adjustment procedures described in connection with throttle
>> > body removal, so it is possible that some of the procedures
>> > performed improperly are causing the high idle.
>> > If you follow step by step, none are particularly difficult, so one
>> > wouldn't expect a problem in this area, but then again the idle
>> > speed is electronically controlled, so it shouldn't be changing
>> > either.
>> >
>>
>> Most dealer technicians just remove the plastic snorkel from the
>> throttle body and clean the throttle body in place. I have never
>> seen a dealership technician actually remove the throttle body to
>> clean it.
>
> The Check Engine light came on today. I called back and told them how
> upset I was with this and asked for a loaner car until they fix it.
> They offered to see me first thing tomorrow and work on it. I don't
> know what else to do now but I must drive it this evening to work and
> back. Hopefully the problem won't harm the engine.

A flashing check engine light would probably ruin the engine, but a light
that is steady probably will not.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: high idle 

"badgolferman" wrote in



>
> They told me they cleaned the throttle body. Is 1000 RPM at idle
> normal?



1K RPM at idle when warm is not correct.

High idle is usually an air leak. Check for a vacuum hose left
disconnected.


--
Tegger
 >> Stay informed about: high idle 

On Thu, 22 Feb 2007 11:41:16 -0500, badgolferman wrote:

> Ray O, 2/22/2007,11:12:35 AM, wrote:
>
>>
>> "badgolferman" wrote in message
>>
>> > 2000 Sienna 105K miles
>> >
>> > Got a tuneup today and had both valve cover gaskets replaced.
>> > Engine idles much higher than it did before. When warmed up and in
>> > Neutral or Park it hovers around 1000 RPM or just a tad higher; I
>> > am used to it being nearer 800 RPM. I was getting lousy gas
>> > mileage before I took it in and fear it will be worse now, not to
>> > mention that it just feels wrong.
>> >
>> > Rather than taking it back to the dealer is there anything I can do
>> > to settle it down a bit? It's a pain to make arrangements for
>> > service and drop-offs, etc.
>>
>> Get a can of carburetor or throttle body cleaner and try cleaning the
>> idle air control (IAC) valve. The IAC valve is attached to the
>> throttle body and has a slide that varies the size of an opening that
>> allows air to bypass the closed throttle plate. Carb cleaner is
>> pretty flammable, so keep sources of heat away when using.
>
> They told me they cleaned the throttle body. Is 1000 RPM at idle
> normal?

Look at the plate (sticker) on the hood. It should give the idle spec for
your engine. I would imagine (from past experience) that the idle should
be ~900RPM for a car w/AT&AC.
 >> Stay informed about: high idle 

Tegger wrote in
207.14.116.130:

> "badgolferman" wrote in
>
>
>
>>
>> They told me they cleaned the throttle body. Is 1000 RPM at idle
>> normal?
>
>
>
> 1K RPM at idle when warm is not correct.



If the transmission is in Drive, that is...




--
Tegger
 >> Stay informed about: high idle 

badgolferman wrote:

> 2000 Sienna 105K miles
>
> Got a tuneup today and had both valve cover gaskets replaced. Engine
> idles much higher than it did before. When warmed up and in Neutral or
> Park it hovers around 1000 RPM or just a tad higher; I am used to it
> being nearer 800 RPM.

Even my puny 1.6L engine is supposed to idle at just 750 RPM, but it
once idled at over 1,000 RPM with the A/C turned on because I had
forgotten to reinstall a vacuum hose. And on a newer vehicle with
fuel injection, a broken temperature sensor connector made the engine
idle fast even after warm up.
 >> Stay informed about: high idle 

badgolferman, 2/22/2007,1:42:15 AM, wrote:

> 2000 Sienna 105K miles
>
> Got a tuneup today and had both valve cover gaskets replaced. Engine
> idles much higher than it did before. When warmed up and in Neutral
> or Park it hovers around 1000 RPM or just a tad higher; I am used to
> it being nearer 800 RPM. I was getting lousy gas mileage before I
> took it in and fear it will be worse now, not to mention that it just
> feels wrong.
>
> Rather than taking it back to the dealer is there anything I can do to
> settle it down a bit? It's a pain to make arrangements for service
> and drop-offs, etc.

I took it back today and they said the seal where the throttle body
connects is not seating properly. When the technician put it together
it seemed to be okay but after checking engine codes they determined
that's where the vacuum leak is coming from. They had to order the
part so they gave me a loaner car. It is a 2007 Yaris S and I must say
it is rather peppy for a little car. It could probably beat my 1997
Camry 4 to the 1/4 mile.
 >> Stay informed about: high idle 

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 >> Stay informed about: high idle