Re: 164 RPM & Timing Sensor

["Daegrigg (Don)" <daegrigg@xxxxxxxxxxx>]

The symptoms don't suggest a problem with the timing sensor which is not
affected by engine temperature.  The more likely candidate is the
temperature sensor on the underside of the thermostat.  It (in combination
with other inputs ) is one of the signals to the ecu   that determines
fuel/air mixture.

Have you checked for error codes?

Also check for loose of poor (corroded or dirty) connections to the temp
sensor, afm, cat converter, min/max switch.

Don

----- Original Message -----
From: Riso, Antonio <antonio.riso@domain.elided>
To: <alfa-digest@domain.elided>
Sent: Tuesday, July 29, 2003 12:49 PM
Subject: 164 RPM & Timing Sensor


> Have any of you had any trouble with this sensor?  My 164 stumbles
terribly
> after I sit in traffic for a while.
>
> There seems to be a temperature threshold (in the engine compartment) that
> triggers these symptoms.  When this happens, the car idles poorly,
sometimes
> it stalls or idles around 300 - 400 RPM, and it will not accelerate higher
> than 1600 RPM.  If I let it cool for a while, it will work fine until a
> certain critical temperature is reached.  So far, I have tried another
> airflow meter and another coil with no success.  I suspect the RPM sensor
or
> some other sensor is shorting out beyond a certain temperature.  If any of
> you have any experience with this type of problem, I would appreciate if
you
> contact me off-line with suggestions on how to proceed.
>
>
>
> Thanks in advance,
>
>
>
> Antonio Riso
>
> 1991 164L
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