On 2/19/2008 2:35 PM, Logic316 wrote:
> "Bob Shuman" <no_spam_thx@[EMAIL PROTECTED]
> wrote in message
> news:%esuj.6671$xq2.721@[EMAIL PROTECTED]
>> When was the throttle body and AIS last cleaned? Any error lights or
>> codes?
>>
>> Bob
>
> I am not getting any "check engine" light or any other error lights on
my
> dashboard. All the guage readings look normal. I did spray carburetor
> cleaner in and around the throttle body only 500 miles ago, and
everything
> looks pretty clean in there. Somebody in another group suggested that it
> might be a worn oxygen sensor, but I took all three of them out, cleaned
and
> tested them on a voltmeter about 5000 miles ago and they were working
fine.
> I would also think my gas mileage would noticably suffer and I would
> probably get a check "engine light" if any of those were the problem, so
I
> doubt it.
>
> - Logic316
>
>
My best _guess_ right now would be a vacuum leak. You might be able to
hear a
hissing sound as the engine dies. Feel for a vacuum hose that is soft
and/or
collapsed. Sometimes the collapsed section of hose will have slit broken
open
in it. A hose could also be cracked where it fits on the barb fitting.
A second guess: Throttle Position Sensor. Probe the connector at the
middle
position with a digital voltmeter. Sweep the throttle through it's full
range.
The voltage should go smoothly from about 1/2 volt to nearly 5 volts.
Any
sudden dips (especially all the way to zero) indicate a fault.
I hope this helps but sometimes eliminating what is _not_ wrong is nearly
as
helpful :-)
--
G. R. Woodring
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