Car : 1991 Volvo 740 SW

Hello, I recently noticed the hose from the air filter going to the engine is cracked. I tried to look up the name but could not find the name of it. What is the hose called? What would be its purpose?

I went to Schucks Auto Supply but they said that they do not carry such hoses and were also not aware of where I could find one.

BTW: The car works but I assume it is taking in unclean air which might be the reason I get 17 mpg.

Any way to get a PIC?

Please get us a picture ASAP.

I was able to click some pictures.

High resolution pics
(http://img164.imagevenue.com/img.php?image=95741_IMG_4835_122_1100lo.JPG)[img=http://img106.imagevenue.com/loc1069/th_95747_IMG_4836_122_1069lo.JPG] (http://img106.imagevenue.com/img.php?image=95747_IMG_4836_122_1069lo.JPG)[img=http://img248.imagevenue.com/loc498/th_95749_IMG_4837_122_498lo.JPG] (http://img248.imagevenue.com/img.php?image=95749_IMG_4837_122_498lo.JPG)[img=http://img163.imagevenue.com/loc775/th_95755_IMG_4835_122_775lo.JPG] (http://img163.imagevenue.com/img.php?image=95755_IMG_4835_122_775lo.JPG)
[img=http://img161.imagevenue.com/loc969/th_95767_IMG_4837_122_969lo.JPG] (http://img161.imagevenue.com/img.php?image=95767_IMG_4837_122_969lo.JPG)


Legend:
a. Hose end from air filter
b. Hose end going to engine

[IMG]local://upfiles/11724/284AC446055540D9B1EADF0598E8DB28.jpg

Second image

local://upfiles/11724/1915D9A79B54495EBC6C36094EE4773E.jpg

That is called the heat rise tube. It sends hot air from the exhaust into the manifold to help the car warm up faster. If you live in a warm climate there is no need for it.

Thanks TECH for answering. Is there a part number I can use to order this online? Which site do you recommend for such a part?

946841 Is Volvo's part number.
Not sure of a site that sells it online. Try FCPgroton.com