96 Eclipse idle speed quirky

<scajjr2.TakeThisOut@verizon.net> ha scritto nel messaggio
news:1191609691.400514.206590@w3g2000hsg.googlegroups.com...
> 96 Eclipse RS, 2.0 4cyl, auto, 139k, recent plugs, wires and air
> filter. Had car act up last week where it started chugging and running
> ragged at 30-40 mph after driving fine for a couple hours. Turned car
> off, checked under hood, started back up, runs OK but now the idle
> will go up to 1500+ rpm from about 800rpm. When driving it feels like
> the engine stays at that rpm when going down thru the gears when
> slowing down, kinds bucks a bit at each gear.
> Checked the TPS and IAC as per Haynes manual, they are within specs.
> Any suggestions?
>
> Sam
>

Bhagat is not always right (it's an euphemism), but in this case I agree
with him.
Check ISC and air intake control unit.
On the AIC check also the silencer, which might be crushed, reducing air
intake..

a good throttle cleaning and a check of intake system should fix the
situation.

andrea
 >> Stay informed about: 96 Eclipse idle speed quirky 

On Sat, 06 Oct 2007 13:09:37 +0200, Andrea Zambelli wrote:


> Bhagat is not always right (it's an euphemism), but in this case I agree
> with him.

Some people's interest in Mitsubishy is due to pride of ownership.

My interest is a little bit more eccentric. I am particularly fond of the
1960s English 4 cylinder era - cars like the Austin 1800, Morris 1100,
Mini 850, Morris Minor, Austin Cambridge and their ilk.

That period in automobile history is interesting because all of those
models and brands have long since departed. They were beaten by
complacency, bad management, poor quality and severely retarded marketing
concepts. These are comparable attributes to what we come to know and
experience from our little mates from Tokyo.

I see Mitsubishi as a re-run of this period of automobile history. We
should all turn up the sound magnification and watch this show.

They will end up as fading ripples in the automotive pond. Hyundai will
displace many Mitsubishi sales in the future. The shitty crown will then
pass on to Hyundai in all likelihood.

Seriously now, MMC's only real hope is to sell to an Indian or Chinese
auto maker.

The Malaysians proved that you can indeed polish Mitsu turds. They may have even
improved on quality somewhat through better casting and alloys then Mitsu.

I am thinking that perhaps an Indian company would do a better job of this
polishing than a Chinese company. An Indian company would not put lead in
their paint that is for sure.

Gracious thanking you.
 >> Stay informed about: 96 Eclipse idle speed quirky 

"Bhagat Gurtu" <bhagat14.TakeThisOut@hindiblogs.com> ha scritto nel messaggio
news:pan.2007.10.06.18.09.35.641101@hindiblogs.com...
> On Sat, 06 Oct 2007 13:09:37 +0200, Andrea Zambelli wrote:
>
> Some people's interest in Mitsubishy is due to pride of ownership.
>

others, like me, bought a pre-owned Mitsu and look forward to fix it and
restore it (the previous owner was terrible).
I bought it for almost nothing and I fix it step by step: with this money I
could buy no other car with 150 hp and good performances.
No pride of ownership, just enjoying performance and light do-it-yourself
tuning.

Indeed my old Jaguar xj6 was definitely better but a 3200 cc was too big for
2 km/day running so I sold it to a british car enthusiast.


> They will end up as fading ripples in the automotive pond. Hyundai will
> displace many Mitsubishi sales in the future. The shitty crown will then
> pass on to Hyundai in all likelihood.

I owned a Hyundai Pony/excel and I found it a good car despite its lethargic
1300 cc engine.
Actually all my friends who bought a Hyundai are absolutely satisfied.

> I am thinking that perhaps an Indian company would do a better job of this
> polishing than a Chinese company.

Also Polish cars can be good. Can a Polish company polish Illinois cars?
I polished my own DSM and it looks quite better.
What about compounding?

LOL
 >> Stay informed about: 96 Eclipse idle speed quirky 

scajjr2 RemoveThis @verizon.net wrote:
> 96 Eclipse RS, 2.0 4cyl, auto, 139k, recent plugs, wires and air
> filter. Had car act up last week where it started chugging and running
> ragged at 30-40 mph after driving fine for a couple hours. Turned car
> off, checked under hood, started back up, runs OK but now the idle
> will go up to 1500+ rpm from about 800rpm. When driving it feels like
> the engine stays at that rpm when going down thru the gears when
> slowing down, kinds bucks a bit at each gear.
> Checked the TPS and IAC as per Haynes manual, they are within specs.
> Any suggestions?
>
> Sam
>

My guess is the fuel pump. Since it is a DC motor I'm sure it has
brushes, and the brushes are probably worn out.

--
Gyz

Everyone thinks they know how to drive.
Everyone thinks they are good drivers.
 >> Stay informed about: 96 Eclipse idle speed quirky 

On Wed, 10 Oct 2007 09:12:27 -0700, Gyzmologist wrote:

> scajjr2.RemoveThis@verizon.net wrote:
>> 96 Eclipse RS, 2.0 4cyl, auto, 139k, recent plugs, wires and air
>> filter. Had car act up last week where it started chugging and running
>> ragged at 30-40 mph after driving fine for a couple hours. Turned car
>> off, checked under hood, started back up, runs OK but now the idle will
>> go up to 1500+ rpm from about 800rpm. When driving it feels like the
>> engine stays at that rpm when going down thru the gears when slowing
>> down, kinds bucks a bit at each gear.
>> Checked the TPS and IAC as per Haynes manual, they are within specs.
>> Any suggestions?
>>
>> Sam
>>
>>
> My guess is the fuel pump. Since it is a DC motor I'm sure it has
> brushes, and the brushes are probably worn out.

That would not explain the rising RPM. There is no way that a faulty fuel
pump would do that. A faulty fuel pump would have trouble delivering
enough fuel to get the car moving, in the event it was delivering too much fuel then
the return from the FPR would just dump it back in the tank.

It could be a bad FPR though (if the diagphragm has an air leak).
 >> Stay informed about: 96 Eclipse idle speed quirky 

Hey there Mr Bat Grunt! That's because you don't know anything about
these cars. If the fuel pressure drops intermittently the mixture goes
lean, the idle speed drops and the ECU opens the idle air port to
compensate. When the fuel pressure goes back up the idle surges.
Unstable fuel pressure could also cause the intermittent rough running.

Bhagat Gurtu wrote:
> On Wed, 10 Oct 2007 09:12:27 -0700, Gyzmologist wrote:
>
>
> That would not explain the rising RPM. There is no way that a faulty fuel
> pump would do that. A faulty fuel pump would have trouble delivering
> enough fuel to get the car moving, in the event it was delivering too much fuel then
> the return from the FPR would just dump it back in the tank.
>
> It could be a bad FPR though (if the diagphragm has an air leak).
>
>


--
Gyz

Everyone thinks they know how to drive.
Everyone thinks they are good drivers.
 >> Stay informed about: 96 Eclipse idle speed quirky