Idling problem in Astra TS

[Ext User(FRAN)]

Intermittently, I've noticed that when stationary and idling, that the
tacho bounces beteen about 750 rpm and about 1100 rpm. When I give the
throttle a minor tap, the fluctuation stops and it sits on 750. Any
clue on why this would be happening?

Fran

[Ext User(Clockmeister)]

"FRAN" <Fran.Beta@gmail.com> wrote in message
news:1166853814.233633.222760@73g2000cwn.googlegro ups.com...
> Intermittently, I've noticed that when stationary and idling, that the
> tacho bounces beteen about 750 rpm and about 1100 rpm. When I give the
> throttle a minor tap, the fluctuation stops and it sits on 750. Any
> clue on why this would be happening?
>

Sticky IAC.

Probably needs a good cleanout. Might also be EGR related.

[Ext User(FRAN)]

Clockmeister wrote:
> "FRAN" <Fran.Beta@gmail.com> wrote in message
> news:1166853814.233633.222760@73g2000cwn.googlegro ups.com...
> > Intermittently, I've noticed that when stationary and idling, that the
> > tacho bounces beteen about 750 rpm and about 1100 rpm. When I give the
> > throttle a minor tap, the fluctuation stops and it sits on 750. Any
> > clue on why this would be happening?
> >
>
> Sticky IAC.


Pardon? I thought that was an insurance company.

>
> Probably needs a good cleanout. Might also be EGR related.

Wow! EGR you say now? I hadn't thought it was that serious. I'd better
get on that PDQ or I'll wind up with SFA.



;-)

Fran

[Ext User(Clockmeister)]

"FRAN" <Fran.Beta@gmail.com> wrote in message
news:1166881935.534961.139650@48g2000cwx.googlegro ups.com...
>
> Clockmeister wrote:
>> "FRAN" <Fran.Beta@gmail.com> wrote in message
>> news:1166853814.233633.222760@73g2000cwn.googlegro ups.com...
>> > Intermittently, I've noticed that when stationary and idling, that the
>> > tacho bounces beteen about 750 rpm and about 1100 rpm. When I give the
>> > throttle a minor tap, the fluctuation stops and it sits on 750. Any
>> > clue on why this would be happening?
>> >
>>
>> Sticky IAC.
>
>
> Pardon? I thought that was an insurance company.
>

Idle Air Control. It controls the idle by regulating the amount of air that
gets bypassed around the butterfly to maintain idle speed.

>> Probably needs a good cleanout. Might also be EGR related.
>
> Wow! EGR you say now? I hadn't thought it was that serious. I'd better
> get on that PDQ or I'll wind up with SFA.
>
>

Exhaust Gas Recirculation.

Realistically, if you don't know what they mean then you need a mechanic ;-)