cason234
Registered User
Hello all! I'm going through the slow process of cleaning things up under the hood of my F250 IDI that I don't use any more, or that have given up the ghost, and aren't necessary any longer. One item I removed recently was the cruise control servo. I'd removed my steering wheel anyways and replaced it with an aftermarket one, so there were no more cruise buttons.
Once I removed the Cruise Control Servo, I reconnected the vacuum line directly to the vacuum canister under the hood (ie: there are no open vacuum lines)***. Now, when I step on the brakes, I hear a fairly prominent hiss coming from under the dash. The brakes still work fine, but I notice if I'm sitting in traffic with the brakes applied, the red 'brake' light comes on in the dash (I assume the vacuum has dropped to a 'warning worthy level', although the vacuum pump is supplying sufficient vacuum to keep the brakes functioning normally).
Ought I to have connected the vacuum lines differently? (ie: should I have simply plugged the lines that came into / from the cc servo?
Any help greatly appreciated. Truck still runs like a beast, but the hiss is somewhat annoying, and I figure I'm one hose connection away from having it "right".
cheers
*** to be clear about the lines: there was one line from the vacuum canister to the CC Servo, and one line from the CC Servo to (not sure where, but I think it was the vacuum manifold on the firewall). I removed the CC Servo, and the line from the canister to the Servo. I ran the other line (from the manifold on the firewall) directly to the canister.
Once I removed the Cruise Control Servo, I reconnected the vacuum line directly to the vacuum canister under the hood (ie: there are no open vacuum lines)***. Now, when I step on the brakes, I hear a fairly prominent hiss coming from under the dash. The brakes still work fine, but I notice if I'm sitting in traffic with the brakes applied, the red 'brake' light comes on in the dash (I assume the vacuum has dropped to a 'warning worthy level', although the vacuum pump is supplying sufficient vacuum to keep the brakes functioning normally).
Ought I to have connected the vacuum lines differently? (ie: should I have simply plugged the lines that came into / from the cc servo?
Any help greatly appreciated. Truck still runs like a beast, but the hiss is somewhat annoying, and I figure I'm one hose connection away from having it "right".
cheers
*** to be clear about the lines: there was one line from the vacuum canister to the CC Servo, and one line from the CC Servo to (not sure where, but I think it was the vacuum manifold on the firewall). I removed the CC Servo, and the line from the canister to the Servo. I ran the other line (from the manifold on the firewall) directly to the canister.
