Alternator belt

The mechanic is telling me that my 1991 Tercel's engine is running too
fast and that he needs to change the alternator belt. What the bad
effects of not changing it?

<mikesmith9999@hotmail.com> wrote in message
news:1144732096.271449.180210@t31g2000cwb.googlegroups.com...[color=blue]
> The mechanic is telling me that my 1991 Tercel's engine is running too
> fast and that he needs to change the alternator belt. What the bad
> effects of not changing it?
>[/color]

Find a new mechanic. The alternator belt has nothing to do with idle speed.
--

Ray O
(correct punctuation to reply)

OK... Someone tried to adjust the idle speed but could not lower it
enough. What could be the problem, Ray?

<mikesmith9999@hotmail.com> wrote in message
news:1144733943.771646.289830@z34g2000cwc.googlegroups.com...[color=blue]
> OK... Someone tried to adjust the idle speed but could not lower it
> enough. What could be the problem, Ray?
>[/color]

The U.S. spec 1991 Tercel is fuel injected so engine idle speed is not
adjustable.

Before you go through a lot of hoops to adjust the idle speed, you should
find out what the cold and hot idle speed actually is on your car and
compare it with the specifications on the sticker under the hood.

If idle speed is too high, check for a leaking injector (including cold
start injector), bad cold start injector, and bad coolant temperature
sensor.
--

Ray O
(correct punctuation to reply)

"Ray O" <rokigawa@tristarassociatesDOTcomn> wrote in message
news:5e202$443b453e$180fead6$29839@msgid.meganewsservers.com...[color=blue]
>
> <mikesmith9999@hotmail.com> wrote in message
> news:1144733943.771646.289830@z34g2000cwc.googlegroups.com...[color=green]
>> OK... Someone tried to adjust the idle speed but could not lower it
>> enough. What could be the problem, Ray?
>>[/color]
>
> The U.S. spec 1991 Tercel is fuel injected so engine idle speed is not
> adjustable.
>
> Before you go through a lot of hoops to adjust the idle speed, you should
> find out what the cold and hot idle speed actually is on your car and
> compare it with the specifications on the sticker under the hood.
>
> If idle speed is too high, check for a leaking injector (including cold
> start injector), bad cold start injector, and bad coolant temperature
> sensor.
> --
>
> Ray O
> (correct punctuation to reply)[/color]

Hey!

My Corolla GTS and my Celica GTS are both injescted, and there *IS* an 'idle
speed adjustment' available.
In the initake plenum, near the front, there is an 'air screw' that can be
used to adjust the idle.

Now, on a very well maintained car that is running well, I would not touch
this screw even though the manuals tell you to;
(short...er, TE1 and E1, check timing and turn screw)

I wouldn't even LOOK at this screw on the Corolla or the Supra, but on my
Celica GTS and another Tercel, I cranked that thing almost monthly!

"Hachiroku" <Trueno@ae86.GTS> wrote in message
news:wEN_f.8366$_T5.3120@trndny08...[color=blue]
>
> "Ray O" <rokigawa@tristarassociatesDOTcomn> wrote in message
> news:5e202$443b453e$180fead6$29839@msgid.meganewsservers.com...[color=green]
>>
>> <mikesmith9999@hotmail.com> wrote in message
>> news:1144733943.771646.289830@z34g2000cwc.googlegroups.com...[color=darkred]
>>> OK... Someone tried to adjust the idle speed but could not lower it
>>> enough. What could be the problem, Ray?
>>>[/color]
>>
>> The U.S. spec 1991 Tercel is fuel injected so engine idle speed is not
>> adjustable.
>>
>> Before you go through a lot of hoops to adjust the idle speed, you should
>> find out what the cold and hot idle speed actually is on your car and
>> compare it with the specifications on the sticker under the hood.
>>
>> If idle speed is too high, check for a leaking injector (including cold
>> start injector), bad cold start injector, and bad coolant temperature
>> sensor.
>> --
>>
>> Ray O
>> (correct punctuation to reply)[/color]
>
> Hey!
>
> My Corolla GTS and my Celica GTS are both injescted, and there *IS* an
> 'idle speed adjustment' available.
> In the initake plenum, near the front, there is an 'air screw' that can be
> used to adjust the idle.
>
> Now, on a very well maintained car that is running well, I would not touch
> this screw even though the manuals tell you to;
> (short...er, TE1 and E1, check timing and turn screw)
>
> I wouldn't even LOOK at this screw on the Corolla or the Supra, but on my
> Celica GTS and another Tercel, I cranked that thing almost monthly!
>[/color]

Somewhere along the line, the idle adjustment screw on fuel injected engines
went away because more people screwed things up than improved them. I think
they were gone by the time the '91 Tercel came out.
--

Ray O
(correct punctuation to reply)

"Ray O" <rokigawa@tristarassociatesDOTcomn> wrote in message
news:e8381$443bdeaa$44a4a10d$2180@msgid.meganewsservers.com...[color=blue]
>
> "Hachiroku" <Trueno@ae86.GTS> wrote in message
> news:wEN_f.8366$_T5.3120@trndny08...[color=green]
>>
>> "Ray O" <rokigawa@tristarassociatesDOTcomn> wrote in message
>> news:5e202$443b453e$180fead6$29839@msgid.meganewsservers.com...[color=darkred]
>>>
>>> <mikesmith9999@hotmail.com> wrote in message
>>> news:1144733943.771646.289830@z34g2000cwc.googlegroups.com...
>>>> OK... Someone tried to adjust the idle speed but could not lower it
>>>> enough. What could be the problem, Ray?
>>>>
>>>
>>> The U.S. spec 1991 Tercel is fuel injected so engine idle speed is not
>>> adjustable.
>>>
>>> Before you go through a lot of hoops to adjust the idle speed, you
>>> should find out what the cold and hot idle speed actually is on your car
>>> and compare it with the specifications on the sticker under the hood.
>>>
>>> If idle speed is too high, check for a leaking injector (including cold
>>> start injector), bad cold start injector, and bad coolant temperature
>>> sensor.
>>> --
>>>
>>> Ray O
>>> (correct punctuation to reply)[/color]
>>
>> Hey!
>>
>> My Corolla GTS and my Celica GTS are both injescted, and there *IS* an
>> 'idle speed adjustment' available.
>> In the initake plenum, near the front, there is an 'air screw' that can
>> be used to adjust the idle.
>>
>> Now, on a very well maintained car that is running well, I would not
>> touch this screw even though the manuals tell you to;
>> (short...er, TE1 and E1, check timing and turn screw)
>>
>> I wouldn't even LOOK at this screw on the Corolla or the Supra, but on my
>> Celica GTS and another Tercel, I cranked that thing almost monthly!
>>[/color]
>
> Somewhere along the line, the idle adjustment screw on fuel injected
> engines went away because more people screwed things up than improved
> them. I think they were gone by the time the '91 Tercel came out.
> --
>
> Ray O
> (correct punctuation to reply)[/color]
Probably weren't neccessary any more.

Remember, my cars are all '80s models.

By '91 the ECU probably got sophisticated enough to take over this function.

"Hachiroku" <Trueno@ae86.GTS> wrote in message
news:y4S_f.3790$ee6.585@trndny01...[color=blue]
>[/color]
<snipped>[color=blue]
> Somewhere along the line, the idle adjustment screw on fuel injected[color=green]
>> engines went away because more people screwed things up than improved
>> them. I think they were gone by the time the '91 Tercel came out.
>> --
>>
>> Ray O
>> (correct punctuation to reply)[/color]
> Probably weren't neccessary any more.
>
> Remember, my cars are all '80s models.
>
> By '91 the ECU probably got sophisticated enough to take over this
> function.[/color]

IIRC, the adjustment screw was just an air bleed, it wasn't directly
connected to the ECU. People who thought they knew what they were doing or
who had expert race trained mechanic uncles would mess with the screw and
cause problems. In all my years of futzing with problem cars, I have never
had to touch that screw unless someone had messed with it before me.
--

Ray O
(correct punctuation to reply)

On Tue, 11 Apr 2006 14:02:18 -0500, Ray O wrote:
[color=blue]
>
> "Hachiroku" <Trueno@ae86.GTS> wrote in message
> news:y4S_f.3790$ee6.585@trndny01...[color=green]
>>[/color]
> <snipped>[color=green]
>> Somewhere along the line, the idle adjustment screw on fuel injected[color=darkred]
>>> engines went away because more people screwed things up than improved
>>> them. I think they were gone by the time the '91 Tercel came out.
>>> --
>>>
>>> Ray O
>>> (correct punctuation to reply)[/color]
>> Probably weren't neccessary any more.
>>
>> Remember, my cars are all '80s models.
>>
>> By '91 the ECU probably got sophisticated enough to take over this
>> function.[/color]
>
> IIRC, the adjustment screw was just an air bleed, it wasn't directly
> connected to the ECU. People who thought they knew what they were doing or
> who had expert race trained mechanic uncles would mess with the screw and
> cause problems.[/color]

Aw, now ya went and done it! You just described me!
The only ones I ever did it with were the Celica with the old engine and a
Tercel taht burned as much oil as gas.

In other words, who cared? :)

[color=blue]
> In all my years of futzing with problem cars, I have never
> had to touch that screw unless someone had messed with it before me.[/color]

--
In the grand scheme fo things...
What difference does it make?

"Hachiroku" <Trueno@ae86.GTS> wrote in message
news:5DX_f.11607$_T5.2905@trndny08...[color=blue]
> On Tue, 11 Apr 2006 14:02:18 -0500, Ray O wrote:
>[color=green]
>>
>> "Hachiroku" <Trueno@ae86.GTS> wrote in message
>> news:y4S_f.3790$ee6.585@trndny01...[color=darkred]
>>>[/color]
>> <snipped>[color=darkred]
>>> Somewhere along the line, the idle adjustment screw on fuel injected
>>>> engines went away because more people screwed things up than improved
>>>> them. I think they were gone by the time the '91 Tercel came out.
>>>> --
>>>>
>>>> Ray O
>>>> (correct punctuation to reply)
>>> Probably weren't neccessary any more.
>>>
>>> Remember, my cars are all '80s models.
>>>
>>> By '91 the ECU probably got sophisticated enough to take over this
>>> function.[/color]
>>
>> IIRC, the adjustment screw was just an air bleed, it wasn't directly
>> connected to the ECU. People who thought they knew what they were doing
>> or
>> who had expert race trained mechanic uncles would mess with the screw and
>> cause problems.[/color]
>
> Aw, now ya went and done it! You just described me!
> The only ones I ever did it with were the Celica with the old engine and a
> Tercel taht burned as much oil as gas.
>
> In other words, who cared? :)
>[/color]

Oh yeah, another reason that the ability to adjust idle speed went away was
easier compliance with emissions requirements, or keeping the car in
compliance.
--

Ray O
(correct punctuation to reply)