A vacuum line or better yet a vacuum tube is about a quarter inch hose, black and very flexible. You will find at least 6 of these hoses located under the hood going into and coming out of many different places. These hoses have suction when the engine is running. If a hose is unplugged from its place, it could cause a number of things to operate differently. How to find a vacuum leak? It�s not easy if you don�t have a good eye and a good ear. Look for opened tubes or unplugged nozzles where the hoses plug into or come out of. If you spot one- then put your ear close to it to notice a hissing sound coming from it. Of course be sure that the engine is running and be careful of moving and hot parts. After searching for open tube ends and listening for hissing, plug the opened ends with your finger to see if there is in fact suction coming from that tube or nozzle. You may notice a change in idle when the leak has been plugged or stopped. Good luck! Lee37726, my way of checking for leaks is to take a can of starting fluid (ether) and spray all the smaller lines, then wait 4 second for the engines reaction, then move to the next, not alot of spraying, just a fine mist for about a 2 seconds per half a foot of line, or depending on crevice of which spraying, your engine will always have a change in RPM if you have a Vacuum leak using this method, plus its cleaner and more reliable then the old take them off and check for hissing routine, but there ya go
No, I know what is box fuses. I want to know where is located that box under the hood.
where is the ac vacuum line on a 2000 impala ls> Yes I need to know about a LS
Don't know what vehicle you have but most HVAC controls operate from a vacuum supply from the engine. I would start with checking the vacuum supply connections under the hood. They could be cracked or disconnected.
I think there is a diagram (sticker) under the hood. Open the hood and look down at the top area there by the front. I have a 97 and that is where I found mine. Let the other users know if this is correct information. Just a thought.
Check under the hood for a disconnected or damaged vacuum line. The controls are vacuum operated and if the vacuum supply is cut off the system defaults to defroster only.
Check the Vacuum diagram under the hood and see if your sound"clicking" is the same as my 1994 chry. labaron,GTC, 3.0, V6. The part on mine is connected to the vacuum canister and the fuel sys. but I don't know what it does or why is clicks. loretta
Have you looked for a decal on the under side of the hood? It is usually refered to as an emissions system diagrahm. thanks like i said i didnt even know where to start looking
Check for a vacuum leak either under the dash or under the hood Check the operation of the vacuum operated motors under the dash Check the operation of the selector switch
under the hood or under the dash,
Your owners title, or the sticker under the hood.
If there is no other mechanical problem the wipers tuck under the hood by pushing the wipers under the hood. Sorry if you already know this, but they have two settings one for winter (which I'm assuming you are talking about) and one for nonwinter time (under the hood position). It will actually snap down into position under the hood.
The brake and clutch reservoirs are next tot each other on the driver side under the hood.