Re: idle revisited [Mode Switch]

["David Teitelbaum" <jtrealty@xxxx>]

If the mode switch isn't working first check that it is geting vacuum.
If you hear it hissing and it seems to change the noise when you turn
it into different positions then you probably need to at least
lubricate it. It should turn easily and click into positions without a
lot of force. In Ken's latest magazine he does a whole article on
rebuilding it. You may require a new rubber diaphram. It is a small
round black piece of rubber with channels in it to send the vacuum to
the correct ports. It wears and dries out and cracks. If it is in good
shape a little grease may be all you need. Of course this is assuming
all the actuaters are working and all the hoses are connected. As bad
as vacuum leaks are the mode switch doesn't seem to have all that much
of an effect on the idle (it still shouldn't leak).
David Teitelbaum
vin 10757 


--- In dmcnews@xxxxxxxxxxxxxxx, "D F" <funkstuf@xxxx> wrote:
> This is a very interesting letter and it makes me think about a
problem I'm 
> having.
> 1.) My system seems to idle properly when cold, then about 1000 rpm
when 
> warmed up.
> We have spent substantial time eliminating vacumn leaks but....
> 2.) My heating switch does not work properly, ie) if I switch from