RE: [DMCForum] Vacuum questions

["Dave Stragand" <dave.stragand@xxxxxxxxxxxxxxx>]

I'll answer the first part.
 
Standing at the rear of the car looking forward -- look at the left pontoon.
There is a single grommet going through the pontoon itself with a rubber
hose coming out of it.  It is inline in that hose.

-----Original Message-----
From: cruznmd [mailto:racuti1@xxxxxxxxxxxx] 
Sent: Tuesday, August 10, 2004 8:23 AM
To: DMCForum@xxxxxxxxxxxxxxx
Subject: [DMCForum] Vacuum questions


Where -exactly- is the check valve that maintains vacuum for the A/C 
duct flapper?

When I firewall the throttle, I lose so much vacuum the flapper 
shuts, cutting off my airflow. Also, no matter what position the 
flapper is in when I shut the car off, vacuum leaks and the flap 
falls to the shut position.

Also, please remind me of the operation of the thermal 3-port vacuum 
switch in the coolant distribution pipe:

1. Describe the different modes of operation @ different temps.
2. 1 line goes to the vacuum advance solenoid.
3. 1 line goes to the intake nipple for a vacuum source.
4. 1 line goes ????

How does the charcoal evaporative cannister fit into all this?

Thanks,
Rich A.



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