Honda Car Forum

OK I have been having idle problems for a while now (2000 Civic SiR).
First it was idleing low, so the dealership replaced the IACV (idle air
control valve). Problem wasn't fixed. Next I cleaned the black carbon
buildup in the throttle body with some throttle body cleaner. My idle was
just about perfect and I noticed that the throttle (gas peddle) felt like it
was sticking at the very top, so I had the dealership look. They cleaned
the throttle body again and said that the throttle body was pitted. After
this cleaning it seemed to idle higher then normal when worm (between 1000
and 1200rpm) and after driving it for about 3 hours with lots of start and
stops, the engine light comes on and the tach is stuck at 1500rpm. When I
go to step on the gas and let out the clutch the car seems to hesitate ALOT.
When the car is truned off then truned back on the idle jumps from 1200rpm
to 1500rpm a few times then settles at 1200rpm.... after driving (start and
stops) a while it returns to 1500 and hesitation.

My question is, Is this anouther faulty IACV? Would them "cleaning" it
have done something to it?

thanks for any advice

dave

OK I have been having idle problems for a while now (2000 Civic SiR).
First it was idleing low, so the dealership replaced the IACV (idle air
control valve). Problem wasn't fixed. Next I cleaned the black carbon
buildup in the throttle body with some throttle body cleaner. My idle was
just about perfect and I noticed that the throttle (gas peddle) felt like it
was sticking at the very top, so I had the dealership look. They cleaned
the throttle body again and said that the throttle body was pitted. After
this cleaning it seemed to idle higher then normal when worm (between 1000
and 1200rpm) and after driving it for about 3 hours with lots of start and
stops, the engine light comes on and the tach is stuck at 1500rpm. When I
go to step on the gas and let out the clutch the car seems to hesitate ALOT.
When the car is truned off then truned back on the idle jumps from 1200rpm
to 1500rpm a few times then settles at 1200rpm.... after driving (start and
stops) a while it returns to 1500 and hesitation.

My question is, Is this anouther faulty IACV? Would them "cleaning" it
have done something to it?

thanks for any advice

dave

In article <XSy7e.31021$vt1.15636@edtnps90>, "JEHU"
<dcoxNOSPAM@hfx.eastlink.ca> wrote:

> OK I have been having idle problems for a while now (2000 Civic SiR).
> First it was idleing low, so the dealership replaced the IACV (idle air
> control valve). Problem wasn't fixed. Next I cleaned the black carbon
> buildup in the throttle body with some throttle body cleaner. My idle was
> just about perfect and I noticed that the throttle (gas peddle) felt like it
> was sticking at the very top, so I had the dealership look. They cleaned
> the throttle body again and said that the throttle body was pitted. After
> this cleaning it seemed to idle higher then normal when worm (between 1000
> and 1200rpm) and after driving it for about 3 hours with lots of start and
> stops, the engine light comes on and the tach is stuck at 1500rpm. When I
> go to step on the gas and let out the clutch the car seems to hesitate ALOT.
> When the car is truned off then truned back on the idle jumps from 1200rpm
> to 1500rpm a few times then settles at 1200rpm.... after driving (start and
> stops) a while it returns to 1500 and hesitation.
>
> My question is, Is this anouther faulty IACV? Would them "cleaning" it
> have done something to it?
>
> thanks for any advice
>
> dave

dave,
I will only try to provide some advice as to the cause of most idling problems:
1. vacuum leaking
2. spark plugs not gapped properly or worn
3. bad spark plug wires
4. incorrect ignition timing
5. defective EGR valve
6. air filter clogged.
7. defective fuel pump or fuel filter needs to be changed.
8. fuel pulsation damper faulty
9. leaking head gasket
I should note that I copied the above list from my repair book--the above
items were on the list of causes of idling problems.

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Thanks for the info


"Jason" <jason@nospam.com> wrote in message
news:jason-1404051341310001@pm4-broad-51.snlo.dialup.fix.net...
> In article <XSy7e.31021$vt1.15636@edtnps90>, "JEHU"
> <dcoxNOSPAM@hfx.eastlink.ca> wrote:
>
>> OK I have been having idle problems for a while now (2000 Civic SiR).
>> First it was idleing low, so the dealership replaced the IACV (idle air
>> control valve). Problem wasn't fixed. Next I cleaned the black carbon
>> buildup in the throttle body with some throttle body cleaner. My idle
>> was
>> just about perfect and I noticed that the throttle (gas peddle) felt like
>> it
>> was sticking at the very top, so I had the dealership look. They cleaned
>> the throttle body again and said that the throttle body was pitted.
>> After
>> this cleaning it seemed to idle higher then normal when worm (between
>> 1000
>> and 1200rpm) and after driving it for about 3 hours with lots of start
>> and
>> stops, the engine light comes on and the tach is stuck at 1500rpm. When
>> I
>> go to step on the gas and let out the clutch the car seems to hesitate
>> ALOT.
>> When the car is truned off then truned back on the idle jumps from
>> 1200rpm
>> to 1500rpm a few times then settles at 1200rpm.... after driving (start
>> and
>> stops) a while it returns to 1500 and hesitation.
>>
>> My question is, Is this anouther faulty IACV? Would them "cleaning" it
>> have done something to it?
>>
>> thanks for any advice
>>
>> dave
>
> dave,
> I will only try to provide some advice as to the cause of most idling
> problems:
> 1. vacuum leaking
> 2. spark plugs not gapped properly or worn
> 3. bad spark plug wires
> 4. incorrect ignition timing
> 5. defective EGR valve
> 6. air filter clogged.
> 7. defective fuel pump or fuel filter needs to be changed.
> 8. fuel pulsation damper faulty
> 9. leaking head gasket
> I should note that I copied the above list from my repair book--the above
> items were on the list of causes of idling problems.
>
> --
> NEWSGROUP SUBSCRIBERS MOTTO
> We respect those subscribers that ask for advice or provide advice.
> We do NOT respect the subscribers that enjoy criticizing people.
>
>
>

"JEHU" <dcoxNOSPAM@hfx.eastlink.ca> wrote in message
news:XSy7e.31021$vt1.15636@edtnps90...
> OK I have been having idle problems for a while now (2000 Civic SiR).
> First it was idleing low, so the dealership replaced the IACV (idle air
> control valve). Problem wasn't fixed. Next I cleaned the black carbon
> buildup in the throttle body with some throttle body cleaner. My idle was
> just about perfect and I noticed that the throttle (gas peddle) felt like
> it was sticking at the very top, so I had the dealership look. They
> cleaned the throttle body again and said that the throttle body was
> pitted. After this cleaning it seemed to idle higher then normal when
> worm (between 1000 and 1200rpm) and after driving it for about 3 hours
> with lots of start and stops, the engine light comes on and the tach is
> stuck at 1500rpm. When I go to step on the gas and let out the clutch the
> car seems to hesitate ALOT. When the car is truned off then truned back on
> the idle jumps from 1200rpm to 1500rpm a few times then settles at
> 1200rpm.... after driving (start and stops) a while it returns to 1500 and
> hesitation.
>
> My question is, Is this anouther faulty IACV? Would them "cleaning" it
> have done something to it?
>
> thanks for any advice
>
> dave
>
Sounds like you did better than the dealer did!

My evil eye is settling on the throttle body, since this got worse after the
dealer had a go at it. The butterfly may not be closing all the way as a
result of friction, or something may have come loose.

The dealer should get first chance of making it right, and they should be
accepting the look-see as a no-charge follow-up (love those hyphens!) to
their work. No professional wants to lose an opportunity to correct any
mistake he may have made.

If you get no satisfaction there, I think you may as well have a look at the
throttle body again. It's possible the throttle body is not going to work
reliably because of the pitting (corrosion?) they described. If that's the
case, I suggest beating the bushes for a throttle body from a wrecking yard.
There have to be *some* around for a 2000.

The "check engine" light is almost certainly in response to whatever is out
of whack and I doubt the codes would tell you anything you don't already
know. When the symptoms are fixed you can worry about clearing the light...
it should clear on its own eventually if you are patient.

Mike

"JEHU" <dcoxNOSPAM@hfx.eastlink.ca> wrote in
news:XSy7e.31021$vt1.15636@edtnps90:

<snip>

> the engine
> light comes on


So what's the code??????

We NEED to know this.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

Thanks for the replies.
Sorry I forgot to mention the code. It is P0505 and in the manual it says
could be the IACV or Throttle body at fault.

dave


"TeGGer®" <tegger@tegger.c0m> wrote in message
news:Xns9638CD718A84Btegger@207.14.113.17...
> "JEHU" <dcoxNOSPAM@hfx.eastlink.ca> wrote in
> news:XSy7e.31021$vt1.15636@edtnps90:
>
> <snip>
>
>> the engine
>> light comes on
>
>
> So what's the code??????
>
> We NEED to know this.
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

dave,
P0505 Idle Control System Malfuction



In article <%6G7e.26155$VF5.18929@edtnps89>, "JEHU"
<dcoxNOSPAM@hfx.eastlink.ca> wrote:

> Thanks for the replies.
> Sorry I forgot to mention the code. It is P0505 and in the manual it says
> could be the IACV or Throttle body at fault.
>
> dave
>
>
> "TeGGer®" <tegger@tegger.c0m> wrote in message
> news:Xns9638CD718A84Btegger@207.14.113.17...
> > "JEHU" <dcoxNOSPAM@hfx.eastlink.ca> wrote in
> > news:XSy7e.31021$vt1.15636@edtnps90:
> >
> > <snip>
> >
> >> the engine
> >> light comes on
> >
> >
> > So what's the code??????
> >
> > We NEED to know this.
> >
> >
> > --
> > TeGGeR®
> >
> > The Unofficial Honda/Acura FAQ
> > www.tegger.com/hondafaq/

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We respect those subscribers that ask for advice or provide advice.
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"Jason" <jason@nospam.com> wrote in message
news:jason-1404052112420001@pm1-broad-67.snlo.dialup.fix.net...
> dave,
> P0505 Idle Control System Malfuction
>
That is what I was afraid of - the code tells us what we already know. I
suspected that from the light coming on in the middle of the progressive
failure.

But Tegger was right and I was wrong - assuming the code won't tell us
anything is a good way of overlooking potentially important information.

Mike

In article <jMKdnbmn5Nx3KsLfRVn-hQ@sedona.net>, "Michael Pardee"
<michaeltnull@cybertrails.com> wrote:

> "Jason" <jason@nospam.com> wrote in message
> news:jason-1404052112420001@pm1-broad-67.snlo.dialup.fix.net...
> > dave,
> > P0505 Idle Control System Malfuction
> >
> That is what I was afraid of - the code tells us what we already know. I
> suspected that from the light coming on in the middle of the progressive
> failure.
>
> But Tegger was right and I was wrong - assuming the code won't tell us
> anything is a good way of overlooking potentially important information.
>
> Mike

Mike,
I advise you to buy a repair manual for your car. They sell them at auto
stores like Auto Zone, Kragens and NAPA. The best one according to Tegger
is produced by Helm--Tegger can tell you where you can buy it. I have a
Chilton manual and it has information related to repairing Idle control
problems.
Jason

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