question under the hood

hatalov · Post by **hatalov** » 01 Jul 2007, 19:36

hey, im new to the forum and i have a 94 volvo 850(non turbo) with 150K miles on it. i live in georgia and guess the car was made for the US. im 17 and am trying to learn about cars. this is my first car and i have stumbled upon something under the hood. this should be a picture of it. it is the silver pipe coming out of what i think is the exhaust. it connects to the air box. i don't know what its for, but its loose and i was hoping if anyone could tell me if it was important. Thanks everyone for the feedback.

Post by **MadeInJapan** » 01 Jul 2007, 20:54

Not that important...tighten up what you can. It's to give yourself some "heated" air for your intake when it's cold outside. Only non-turbo's had these.

hatalov · Post by **hatalov** » 01 Jul 2007, 21:22

can i just take it off so there is no hot air coming in...or would that be problematic.

Post by **Ozark Lee** » 01 Jul 2007, 21:40

You can, and perhaps should. Inside of your airbox, the box with your air filter, is a thermostat that should switch between the hot air from the pipe you highlighted and cold air from the front of the car. On most non turbo cars of our age, I too have a '94, the thermostat has failed. When it fails it directs the air from the hot side to the intake.

It kills your fuel mileage and power.

Check the repair database for some pictures on how to jam the flap to the cold air position.

...Lee

hatalov · Post by **hatalov** » 01 Jul 2007, 23:09

thanks a lot for the tip..i have another question though..if i remove the pipe do i have to block of the hole in the exhaust or should i just leave it open.

Post by **hausmeister** » 02 Jul 2007, 02:02

its not really a hole, you don't need to plug it.