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If that's not it, test vacuum canister check valve...
Posted by Micah in NC [Email] (more from Micah in NC) on Wed, 6 Feb 2002 17:24:23
In Reply to: ventilation issues, Bill, Wed, 6 Feb 2002 15:19:28
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The air is usually diverted to the floor or defrost vents when this occurs, so check for that when the problem happens.
The white, ribbed, plastic vacuum canister is located on the passenger's side (US) of the car, between inner & outer fender. It has a check valve to keep vacuum in the reservoir when low manifold vacuum situations occur (i.e. acceleration, full-throttle load).
To check it, find vacuum hose leading to canister's check valve. There are 2 hoses, it's the one connected to the US quarter-diameter, inch-thick circular object on top of the canister. Disconnect this to connect a length of vacuum tubing instead (available at Wal-Mart) and suck on the other end. Then seal it with your tongue.
If it "leaks" down and doesn't keep vacuum on your tongue, then it's bad. If you have a vacuum guage, tee it in between your mouth and the check valve for a more accurate test. Or use a Mity-Vac.
Hope this helps!
Micah in NC
'84 900S, 201K mi.
posted by 208.61.12...
Posts in this Thread:
- ventilation issues, Bill, Wed, 6 Feb 2002 15:19:28
- Re: ventilation issues, Tarky, Wed, 6 Feb 2002 19:47:34
- If that's not it, test vacuum canister check valve..., Micah in NC, Wed, 6 Feb 2002 17:24:23 <-- Viewing This Message
- Re: ventilation issues, Dana
, Wed, 6 Feb 2002 16:56:33
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