Idle problem maybe solved

[Michael Parris]

Back to my idle/cold start/hot start problem.

I found the vacuum line to the charcoal canister diverter valve was not
plugged in. Obviously that's going to be letting in un-metered air and as
the O2 doesn't work until it's warm and can compensate means before that
happens there's too much air.
I'm not really sure how much additional air a little line like that can let
in but now I've plugged it back in the car starts from cold without
throttle and stays running.  I only ran it for 5 to 10 minutes at idle
until the temperature was about quarter of where it normally is, left it an
hour and started it again without throttle and it was fine.
Actually the first time I started it after plugging the line in it ran for
about 10 seconds then suffocated and died (or seemed like it), started it
straight away and it ran OK if a little wobbly for about 20 seconds.  I'm
wondering if it was running a previous 'more air' adaptation to start with
and suddenly with less it couldn't run.

I'll try again from cold tomorrow just to check it wasn't a fluke.

Mike
90S4

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