vacuum line on air box
#1
vacuum line on air box
hello, i just reciently purchased a use 96 850. on the air box there are two vacuum lines. the bottom one is connected but the upper one is disconected. were does it go. i have looked all over the engine bay and the haynes manual doesn't say. any one know. also is there any mods to get better gas mileage, ie remap the computer. thanks dave.
#6
#7
RE: vacuum line on air box
I found where it goes. i read that some volvo's have a wax valve in the air box that controls the flap for the hot air comming off the exhaust manifold. mine has a vaccume hose attachment. rather than replacing it, i just removed the flap to open up the airway. it was a huge restriction. i have more throttle responce now.
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sugardoo
Volvo S80
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01-30-2015 04:54 PM