Question about 1989 Jeep Comanche
Vacuum line is disconnected and has a 90 degree fitting on end but cannot find location it attaches to. has vacuum when engine is started. jeep does not have cruise control and hose comes from "T" connecter for HVAC system.
You should have a vacuum line diagram under the hood of your car you can buy the haynes repair book for your vehicle at any autozone or advance auto someplace like that
Posted on Mar 28, 2013
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Posted on Jan 02, 2017
SOURCE: Hose connection location
If you look under there you should find a steel or plastic line that runs up to a place inside the engine bay.( If it is connected directly to the differential) If it is connected to a box mounted on the right side axle it is part lof your 4x4control and should carry vacuum. With engine running you will hear vacuum leak and easily find connection point.
(but you didn't mention any driveline problem so it's likely the first, which is only a vent line. as long as it is not pointing foreward or straight up it is also ok to just secure it out of the way. (but not where it will become submerged in water etc.
Posted on Jan 24, 2009
Haynes manual has a diagram. Main important hookups are to power brake booster, fuel pressure regulator and map sensor. also need a connection to a/c controls inside drivers compartment and evap system canister. will also need connection to egr valve solenoid if you have one. as well as pcv on valve cover (or ccv which replaces pcv on some)
Posted on Mar 04, 2009
If the pump is running with the key on, and you have a hose coming from the pump with no obstructions in the way (such as a fuel filter) and there is no fuel coming out of that open hose, then you need to remove the pump and find out why. It cannot run without pumping something out of the hose (unless you have it connected to the wrong hose (vent or return line) Voltage is important, but if it's running even if volts are low, it still will move some fuel.
Posted on Aug 15, 2009
If it's attached to the diff housing and not to the box on the r/f axle (if you have one) it is a vent hose. Just secure it anywhere out of the way on the firewall. Don't pull it tight or when the axle moves it will fall off again!
Posted on Oct 09, 2009
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