is the idle switch making contact at idle ??
very very important ..
and most that I look at are not working right.

Scott

On 05/09/2016 06:56 AM, David Beierl wrote:
> At 08:04 PM 5/8/2016, Spencer Allen wrote:
>> Took my 85 auto trans to mechanic to try and cure the bouncy
>> idle-raced up & down in neutral/park- and he stop the bounce but now
>> I have a weak idle warm or cold. Idle is so weak & lumpy that engine
>> dies when attempting to put in gear and often just dies outright. I
>> can apply throttle to get rpm up and it will run smooth like that
>> but let off to put in drive no good. He seems to think the aux air
>> reg is bad but even with warm/hot engine it still does the stumble &
>> die thing. Shouldn't the aux air reg be a non factor if the engine
>> has warmed up? before taking it in I did the hose pinch at start up
>> and the rpms dropped as it should. I can't do that now because idle
>> is too weak. Will attempt to do the Bentley check of aux air reg but
>> would like some input or opinions on the weak idle. Thanks for any help.
>> Spencer
>> 85 Westy 1.9 auto
>
> No, all the aux air regulator does is simulate opening the throttle
> slightly when the engine is cold.  It's connected thermally to the
> engine and also has an electric heater so it closes quicker after the
> engine starts.
>
> Check that he didn't forget to reconnect the idle stabilizer module,
> it advances the timing when rpm goes below the set point.
>
> Yrs,
> d
>