I want to replace the vacumn hose from the intake manifold that runs into the firewall below the brake booster. Is this connected to a valve on the brake booster and can it be easily replaced (the valve) when i change the vacumn hose. Dont see this valve on the outside of the firewall. Is it accessible from the inside under the driver well?

I have a studder and die (only does it one time) when starting the car stone cold and putting the foot on the brake to put the car in gear. The vacumn line is pretty brittle and like I said it runs into the firewall below the brake booster. It is about three feet long.

Thanks
RedBrick

1992 GLE 745Ti 106,000

 

Not sure what that hose is for.
The brake booster hose goes into the top of the Booster.

The stalling on first start might be a Dirty Throttle body.

 

I'll second the dirty throttle body. "Studder and stall" on my '90 240 was fixed with this relatively simple and inexpensive cleaning. It's a DIY if you're a little handy; $60-75 if a shop does it. Usually done as part of a tune-up I'm told.

Jim

 

Where can I find a diagram of my vacumn lines on a 1987 Volvo 740 B2300

 

on a sticker under the hood.

there's way too many variations for them to be detailed in any manual.