need vacuum hose diagram fast idle ac
On a 1990 Corvette, the vacuum hose from the check valve connects to the intake manifold. This connection allows the HVAC system to receive the necessary vacuum pressure for its operation. The check valve itself is typically located near the HVAC controls, helping to maintain vacuum even when the engine is not running.
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Well there are lots of possible reasons, BUT Li key it is a vacuum leak, either the hose of Brake booster, and or intake is / has a leaking vacuum line.
If they are vacuum operated then I would suspect a vacuum hose leak. It may also be that some moving parts need lubrication.
The best way to repair a vacuum hose on your Chevrolet is to replace the vacuum hose. The vacuum hose is held in place with a retaining clamp on each end of the hose.
There is no transmission vacuum hose. That is a vent hose.
You look up the size of the hose from the instructors manual that came with the vacuum you purchased. Then you look for stores near you which have the hose your vacuum needs and then you buy the vacuum hose.
Buy a Haynes Manual at your local auto parts store (just like a Chiltons) and find page with diagrams.
Its the hose that attached to a vacuum. Its where the suction is transferred from the vacuum cleaner to any attachments. Its also generically referred to as a vacuum for your car.
Near the firewall under the hood, there is a little vacuum hose that has a plastic disk looking thing in the hose. This piece actually has to do with an engine backfiring, but that disk thing is probably cracked from heat and age. Needs to be replaced. If that is okay or you can't find it, Look for a vacuum hose going into the firewall, follow it to the intake and make sure it has vacuum. If it does, then the problem is inside the car, probably has a leaking vacuum line behind head unit or needs a head unit.
That would be a vacuum hose with a hole in it, burst isn't usually a term I would use with a vacuum hose as it tends to imply pressure pushing out.