Hello all,

A while back I noticed a hissing that was coming from behind the glove box. Then I noticed that my cruise control was not changing gears (downshifting) and dad told me that it all works on the vacuum system. I decided to do some investigating and found that there is a connection running from the engine compartment to the cab (like an elbow joint of sorts), and when I pinch it the hissing stops. I don't have a picture of it right now, but could someone tell me the name of that part and if it is something I can replace? I'm a total novice when it comes to engine repairs but can get myself around with proper instructions.

Thanks for any help you can give.

 

Can you provide since specifics on your truck? I think cruise is electronic on 3rd gens.

 

It's a 2005 Dodge Dakota

 

Cruise is Electronic on 06+ Daks, 05 is still a Servo, as the throttle is still a cable, not electronic to.

 

my 06 is cable as well, i added the servo from a junk yard to the tb. i think 08+ is drive by wire because thats when the TB mount changed on the manifolds.

 

Per the service manual, on the 2005, the tube that elbows into the firewall is connected to a vacuum reservoir for the cruise control system. The reservoir is mounted on the bottom of the windshield wiper cowl, and can only be replaced, not repaired. There's also a check valve, but it's not clear the exact location on the line.

 

Hmm...learn something new every day...lol