How does the vacuum line work on a four wheel drive car?
Shifting out of four wheel drive the valve moves down, it blocks off the vacuum feed first, then opens the actuator port to the vent line, That lets air into the actuator and it moves and unlocks the front axle. If you can see the switch. The picture shows which lines go where based on the alignment pin on the switch.
Where does the vacuum come from in a 1988 S-10 4 cyl?
These are the vacuum diagrams for 1988 s-10 4 cyl…this ball is not for the brakes! If the brakes are acting up when you step on the pedal, test the check valve at the booster, vacuum source for brakes is from manifold…ALL doors on the heater plenum are operated by VACUUM!
How do you connect a vacuum line to an engine?
To determine which is what when you cannot see the switch. Connect a chunk of vacuum line to any port and blow into it. Move the line until you find the port you cannot blow through. This is the port that goes to the engine vacuum. Connect it up. Start the engine and shift the case into four wheel drive.
Where are the vacuum lines on a 1987 Jeep Wrangler?
I recently bought a 1987 Jeep Wrangler with a 4.2 liter 6. Comming from the transmission, there are four color coded hard plastic vacuum lines. They are coded red, green, yellow and blue. These vacuum lines pass under the battery, on the passenger side, and appear to go to the front axel shift motor.
Where are the vacuum lines on a YJ?
They are coded red, green, yellow and blue. These vacuum lines pass under the battery, on the passenger side, and appear to go to the front axel shift motor. Close to the front passenger wheel (still inside the engine compartment) these four lines have splices in them.
How to repair a Jeep Wrangler YJ vacuum schematic?
Fig. 6: Emission control vacuum schematic-1992 with 4.0L engine Access our Jeep Wrangler-YJ 1987-1995 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles.
Where can I find a GMC Safari vacuum diagram?
Click the “View More” button, and then click “Vehicle Repair Guides.” Select the chapter “Vacuum Diagrams Repair Guide”.