2000 GT Stalling - Ideas?

Hello guys,
I did fuel system cleaning, changed sparks, changed fuel filter, and even
changed the IAC valve, but the problem still existing. Mechanics say it's
normal but i guess they say that coz they can't fix it. Any suggestion
that can help would be appreciated!
It's 2000 GT with 120,000 miles
thnx

On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
> wrote:

>Hello guys,
>I did fuel system cleaning, changed sparks, changed fuel filter, and even
>changed the IAC valve, but the problem still existing. Mechanics say it's
>normal but i guess they say that coz they can't fix it. Any suggestion
>that can help would be appreciated!
>It's 2000 GT with 120,000 miles
>thnx

I found in my 2001 that if I didn't use fuel system cleaning around
every three or four tanks of gas, this would happen.
-Rich

On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
> wrote:

>Hello guys,
>I did fuel system cleaning, changed sparks, changed fuel filter, and even
>changed the IAC valve, but the problem still existing. Mechanics say it's
>normal but i guess they say that coz they can't fix it. Any suggestion
>that can help would be appreciated!
>It's 2000 GT with 120,000 miles
>thnx

Stop using 89 octane, use 87 as the manual states.
I would check all ground straps also.
Also have the fuel pressure checked (running and not running but
primed). At 120K the fuel pump might be on its last legs.
You can get a tester for around 40 bucks. Don't overtighten the
connector or you will ruin the little seal in it.



Remove NO-SPAM from email address when replying

Rein wrote:
> On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
> > wrote:
>
>
>>Hello guys,
>>I did fuel system cleaning, changed sparks, changed fuel filter, and even
>>changed the IAC valve, but the problem still existing. Mechanics say it's
>>normal but i guess they say that coz they can't fix it. Any suggestion
>>that can help would be appreciated!
>>It's 2000 GT with 120,000 miles
>>thnx
>
>
> Stop using 89 octane, use 87 as the manual states.

Why would this cause the car to stall?

> I would check all ground straps also.
> Also have the fuel pressure checked (running and not running but
> primed). At 120K the fuel pump might be on its last legs.
> You can get a tester for around 40 bucks. Don't overtighten the
> connector or you will ruin the little seal in it.
>
>
>
> Remove NO-SPAM from email address when replying


--
Wound Up
ThunderSnake #65

I preface this by saying that I don't know a ton about cars. I had a
problem last fall where my '00 GT could not hold an idle. It would run if I
kept my foot on the gas, but, the minute that I took my foot off of the gas,
it would stall. The dealer had to replace the Idle Air Control.

Hope this helps.

Ken Zwyers

"mustangGT_00" > wrote in message
lkaboutautos.com...
> Hello guys,
> I did fuel system cleaning, changed sparks, changed fuel filter, and even
> changed the IAC valve, but the problem still existing. Mechanics say it's
> normal but i guess they say that coz they can't fix it. Any suggestion
> that can help would be appreciated!
> It's 2000 GT with 120,000 miles
> thnx
>

Wound Up wrote:
> Rein wrote:
>
>> On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
>> > wrote:
>>
>>
>>> Hello guys, I did fuel system cleaning, changed sparks, changed fuel
>>> filter, and even
>>> changed the IAC valve, but the problem still existing. Mechanics say
>>> it's
>>> normal but i guess they say that coz they can't fix it. Any suggestion
>>> that can help would be appreciated!
>>> It's 2000 GT with 120,000 miles
>>> thnx
>>
>>
>>
>> Stop using 89 octane, use 87 as the manual states.
>
>
> Why would this cause the car to stall?
>


I think it causes buildup along the intake and in the heads and through
the injectors and stuff. Its a slower burning fuel than regular 87
octane so less of it actually burns off. I am not 100% sure on that,
but I think I read it somewhere. Try cleaning the mass air sensor also,
that could very well be your problem.
Erik D.
'94 white lightning
'01 white GT

>> I would check all ground straps also. Also have the fuel pressure
>> checked (running and not running but
>> primed). At 120K the fuel pump might be on its last legs.
>> You can get a tester for around 40 bucks. Don't overtighten the
>> connector or you will ruin the little seal in it.
>>
>>
>>
>> Remove NO-SPAM from email address when replying
>
>
>

Erik D. wrote:
>
>
> Wound Up wrote:
>
>> Rein wrote:
>>
>>> On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
>>> > wrote:
>>>
>>>
>>>> Hello guys, I did fuel system cleaning, changed sparks, changed fuel
>>>> filter, and even
>>>> changed the IAC valve, but the problem still existing. Mechanics say
>>>> it's
>>>> normal but i guess they say that coz they can't fix it. Any suggestion
>>>> that can help would be appreciated!
>>>> It's 2000 GT with 120,000 miles
>>>> thnx
>>>
>>>
>>>
>>>
>>> Stop using 89 octane, use 87 as the manual states.
>>
>>
>>
>> Why would this cause the car to stall?
>>
>
>
> I think it causes buildup along the intake and in the heads and through
> the injectors and stuff. Its a slower burning fuel than regular 87
> octane so less of it actually burns off. I am not 100% sure on that,
> but I think I read it somewhere. Try cleaning the mass air sensor also,
> that could very well be your problem.

The only place unburnst gas could build up would be after the fact, like
in the convertors. Rotten egg smell.

> Erik D.
> '94 white lightning
> '01 white GT
>
>>> I would check all ground straps also. Also have the fuel pressure
>>> checked (running and not running but
>>> primed). At 120K the fuel pump might be on its last legs.
>>> You can get a tester for around 40 bucks. Don't overtighten the
>>> connector or you will ruin the little seal in it.
>>>
>>>
>>>
>>> Remove NO-SPAM from email address when replying
>>
>>
>>
>>
>


--
Wound Up
ThunderSnake #65

Just a thot, if during your cleanup you didn't happen to clean and recharge
a K&N air filter by chance?
If so, you may have over done the re-oiling and its contaminated the MAF
sensor.

--
Jafo
'02 GT Black
Not eggzackly stock.

"Ken Zwyers" > wrote in message
...
> I preface this by saying that I don't know a ton about cars. I had a
> problem last fall where my '00 GT could not hold an idle. It would run if
I
> kept my foot on the gas, but, the minute that I took my foot off of the
gas,
> it would stall. The dealer had to replace the Idle Air Control.
>
> Hope this helps.
>
> Ken Zwyers
>
> "mustangGT_00" > wrote in message
> lkaboutautos.com...
> > Hello guys,
> > I did fuel system cleaning, changed sparks, changed fuel filter, and
even
> > changed the IAC valve, but the problem still existing. Mechanics say
it's
> > normal but i guess they say that coz they can't fix it. Any suggestion
> > that can help would be appreciated!
> > It's 2000 GT with 120,000 miles
> > thnx
> >
>
>

On Thu, 17 Mar 2005 00:43:42 GMT, Wound Up > wrote:

>Rein wrote:
>> On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
>> > wrote:
>>
>>
>>>Hello guys,
>>>I did fuel system cleaning, changed sparks, changed fuel filter, and even
>>>changed the IAC valve, but the problem still existing. Mechanics say it's
>>>normal but i guess they say that coz they can't fix it. Any suggestion
>>>that can help would be appreciated!
>>>It's 2000 GT with 120,000 miles
>>>thnx
>>
>>
>> Stop using 89 octane, use 87 as the manual states.
>
>Why would this cause the car to stall?

Didn't say it did, but it could hide other issues. The manual states
to use 87, so use 87. All these fantasies about 'cleaner' burning,
'better' burning, etc.. Who came up with all this ? The ONLY reason to
use higher octane is for higher compression cars and/or cars with
superchargers/turbo's to prevent detonation/pinging.
Use 87.

Remove NO-SPAM from email address when replying

Rein wrote:
> On Thu, 17 Mar 2005 00:43:42 GMT, Wound Up > wrote:
>
>
>>Rein wrote:
>>
>>>On Tue, 15 Mar 2005 18:05:48 -0500, "mustangGT_00"
> wrote:
>>>
>>>
>>>
>>>>Hello guys,
>>>>I did fuel system cleaning, changed sparks, changed fuel filter, and even
>>>>changed the IAC valve, but the problem still existing. Mechanics say it's
>>>>normal but i guess they say that coz they can't fix it. Any suggestion
>>>>that can help would be appreciated!
>>>>It's 2000 GT with 120,000 miles
>>>>thnx
>>>
>>>
>>>Stop using 89 octane, use 87 as the manual states.
>>
>>Why would this cause the car to stall?
>
>
> Didn't say it did, but it could hide other issues. The manual states
> to use 87, so use 87. All these fantasies about 'cleaner' burning,
> 'better' burning, etc.. Who came up with all this ? The ONLY reason to
> use higher octane is for higher compression cars and/or cars with
> superchargers/turbo's to prevent detonation/pinging.
> Use 87.
>

This is not my car; I was just curious regarding the reply.
I understand the actual need of higher octane fuels. When I smell the
rotten egg convertor stench on the highway, I often think of how many
people don't. The answer seemed to indicate higher octane caused this
problem, that's all....

Marketers at oil companies have been successful for years at making
consumers waste money on fuel they don't need, and it is sad. I time my
'67 by ear and feel; it needs 89. The EFI cars get only what they need
not to ping. My beater Tempo needs 89 at 196k most likely because of
increased compression due to carbon buildup. No rotten eggs.

--
Wound Up
ThunderSnake #65