Mystery-solution?

I had been having a problem with high idle in summer heat when running the
AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
deposit around the outlet of exhaust pipe...rich mixture.
I changed the plugs, cleaned sensors etc....all the things that were
suggested by the group, but did not seem to help.
Last week my wife mentioned that she heard a squeel coming off the engine
when turning the wheel, so I checked the belt. It was cracked and hard,
probably had 90-100k miles on it, so I bought one of the new style Dayco
belts and installed it.
Now the mileage is back to what it was before and the idle is much better
also. Anyone know why a slipping belt would cause these problems?
TIA,
MR

Your symptoms sound a lot like a bad coolant temperature sensor to me since
it would tell the engine computer the engine was always cold sending it more
fuel and running rich.

A slipping belt would not cause the symptoms you were seeing. It's good you
replaced the bad belt, but I'd be suspicious and be on the look out for them
to return.

Bob


"mrichards" > wrote in message
newsp.tk0gnwcc46xnuk@mr-notebook...
>I had been having a problem with high idle in summer heat when running the
>AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
>deposit around the outlet of exhaust pipe...rich mixture.
> I changed the plugs, cleaned sensors etc....all the things that were
> suggested by the group, but did not seem to help.
> Last week my wife mentioned that she heard a squeel coming off the engine
> when turning the wheel, so I checked the belt. It was cracked and hard,
> probably had 90-100k miles on it, so I bought one of the new style Dayco
> belts and installed it.
> Now the mileage is back to what it was before and the idle is much better
> also. Anyone know why a slipping belt would cause these problems?
> TIA,
> MR
>

Is the sensor the same as the one for the temp indicator on dash? If so,
it seems to be showing the correct temp. Also, is the temp sensor easy to
replace.
Thanks,
MR

On Tue, 26 Dec 2006 10:45:34 -0500, Bob Shuman >
wrote:

> Your symptoms sound a lot like a bad coolant temperature sensor to me
> since
> it would tell the engine computer the engine was always cold sending it
> more
> fuel and running rich.
>
> A slipping belt would not cause the symptoms you were seeing. It's good
> you
> replaced the bad belt, but I'd be suspicious and be on the look out for
> them
> to return.
>
> Bob
>
>
> "mrichards" > wrote in message
> newsp.tk0gnwcc46xnuk@mr-notebook...
>> I had been having a problem with high idle in summer heat when running
>> the
>> AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
>> deposit around the outlet of exhaust pipe...rich mixture.
>> I changed the plugs, cleaned sensors etc....all the things that were
>> suggested by the group, but did not seem to help.
>> Last week my wife mentioned that she heard a squeel coming off the
>> engine
>> when turning the wheel, so I checked the belt. It was cracked and hard,
>> probably had 90-100k miles on it, so I bought one of the new style Dayco
>> belts and installed it.
>> Now the mileage is back to what it was before and the idle is much
>> better
>> also. Anyone know why a slipping belt would cause these problems?
>> TIA,
>> MR
>>
>
>



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What year and type vehicle? Earlier models used two sensors so the driver
temp gauge could still read correctly while the one reporting the coolant
temp to the computer could be broken.

Bob

"mrichards" > wrote in message
newsp.tldjddp446xnuk@mr-notebook...
> Is the sensor the same as the one for the temp indicator on dash? If so,
> it seems to be showing the correct temp. Also, is the temp sensor easy to
> replace.
> Thanks,
> MR
>
> On Tue, 26 Dec 2006 10:45:34 -0500, Bob Shuman >
> wrote:
>
>> Your symptoms sound a lot like a bad coolant temperature sensor to me
>> since
>> it would tell the engine computer the engine was always cold sending it
>> more
>> fuel and running rich.
>>
>> A slipping belt would not cause the symptoms you were seeing. It's good
>> you
>> replaced the bad belt, but I'd be suspicious and be on the look out for
>> them
>> to return.
>>
>> Bob
>>
>>
>> "mrichards" > wrote in message
>> newsp.tk0gnwcc46xnuk@mr-notebook...
>>> I had been having a problem with high idle in summer heat when running
>>> the
>>> AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
>>> deposit around the outlet of exhaust pipe...rich mixture.
>>> I changed the plugs, cleaned sensors etc....all the things that were
>>> suggested by the group, but did not seem to help.
>>> Last week my wife mentioned that she heard a squeel coming off the
>>> engine
>>> when turning the wheel, so I checked the belt. It was cracked and hard,
>>> probably had 90-100k miles on it, so I bought one of the new style Dayco
>>> belts and installed it.
>>> Now the mileage is back to what it was before and the idle is much
>>> better
>>> also. Anyone know why a slipping belt would cause these problems?
>>> TIA,
>>> MR
>>>
>>
>>
>
>
>
> --
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

97 SL1,
Thanks again,
MR

On Sat, 30 Dec 2006 10:34:27 -0500, Bob Shuman >
wrote:

> What year and type vehicle? Earlier models used two sensors so the
> driver
> temp gauge could still read correctly while the one reporting the coolant
> temp to the computer could be broken.
>
> Bob
>
> "mrichards" > wrote in message
> newsp.tldjddp446xnuk@mr-notebook...
>> Is the sensor the same as the one for the temp indicator on dash? If
>> so,
>> it seems to be showing the correct temp. Also, is the temp sensor easy
>> to
>> replace.
>> Thanks,
>> MR
>>
>> On Tue, 26 Dec 2006 10:45:34 -0500, Bob Shuman
>> >
>> wrote:
>>
>>> Your symptoms sound a lot like a bad coolant temperature sensor to me
>>> since
>>> it would tell the engine computer the engine was always cold sending it
>>> more
>>> fuel and running rich.
>>>
>>> A slipping belt would not cause the symptoms you were seeing. It's
>>> good
>>> you
>>> replaced the bad belt, but I'd be suspicious and be on the look out for
>>> them
>>> to return.
>>>
>>> Bob
>>>
>>>
>>> "mrichards" > wrote in message
>>> newsp.tk0gnwcc46xnuk@mr-notebook...
>>>> I had been having a problem with high idle in summer heat when running
>>>> the
>>>> AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
>>>> deposit around the outlet of exhaust pipe...rich mixture.
>>>> I changed the plugs, cleaned sensors etc....all the things that were
>>>> suggested by the group, but did not seem to help.
>>>> Last week my wife mentioned that she heard a squeel coming off the
>>>> engine
>>>> when turning the wheel, so I checked the belt. It was cracked and
>>>> hard,
>>>> probably had 90-100k miles on it, so I bought one of the new style
>>>> Dayco
>>>> belts and installed it.
>>>> Now the mileage is back to what it was before and the idle is much
>>>> better
>>>> also. Anyone know why a slipping belt would cause these problems?
>>>> TIA,
>>>> MR
>>>>
>>>
>>>
>>
>>
>>
>> --
>> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>
>



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Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

That model had just one sensor.

"mrichards" > wrote in message
newsp.tlffrtug46xnuk@mr-notebook...
> 97 SL1,
> Thanks again,
> MR
>
> On Sat, 30 Dec 2006 10:34:27 -0500, Bob Shuman >
> wrote:
>
>> What year and type vehicle? Earlier models used two sensors so the
>> driver
>> temp gauge could still read correctly while the one reporting the coolant
>> temp to the computer could be broken.
>>
>> Bob
>>
>> "mrichards" > wrote in message
>> newsp.tldjddp446xnuk@mr-notebook...
>>> Is the sensor the same as the one for the temp indicator on dash? If
>>> so,
>>> it seems to be showing the correct temp. Also, is the temp sensor easy
>>> to
>>> replace.
>>> Thanks,
>>> MR
>>>
>>> On Tue, 26 Dec 2006 10:45:34 -0500, Bob Shuman
>>> >
>>> wrote:
>>>
>>>> Your symptoms sound a lot like a bad coolant temperature sensor to me
>>>> since
>>>> it would tell the engine computer the engine was always cold sending it
>>>> more
>>>> fuel and running rich.
>>>>
>>>> A slipping belt would not cause the symptoms you were seeing. It's
>>>> good
>>>> you
>>>> replaced the bad belt, but I'd be suspicious and be on the look out for
>>>> them
>>>> to return.
>>>>
>>>> Bob
>>>>
>>>>
>>>> "mrichards" > wrote in message
>>>> newsp.tk0gnwcc46xnuk@mr-notebook...
>>>>> I had been having a problem with high idle in summer heat when running
>>>>> the
>>>>> AC and especially a drop in gas mileage of about 5-6 mpg....heavy soot
>>>>> deposit around the outlet of exhaust pipe...rich mixture.
>>>>> I changed the plugs, cleaned sensors etc....all the things that were
>>>>> suggested by the group, but did not seem to help.
>>>>> Last week my wife mentioned that she heard a squeel coming off the
>>>>> engine
>>>>> when turning the wheel, so I checked the belt. It was cracked and
>>>>> hard,
>>>>> probably had 90-100k miles on it, so I bought one of the new style
>>>>> Dayco
>>>>> belts and installed it.
>>>>> Now the mileage is back to what it was before and the idle is much
>>>>> better
>>>>> also. Anyone know why a slipping belt would cause these problems?
>>>>> TIA,
>>>>> MR
>>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>>
>>
>
>
>
> --
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/