Fix It

A rear power window motor mounts inside the rear door and rotates a gear on the window regulator to open or close the window. By pushing the rear window switch, you are closing the power window circuit in the door and energizing the motor. Once this happens, the motor turns the regulator gear. However, if the motor burns out, you can push the button all day long with no results. Those with mechanical aptitude and an hour of free time can replace a rear power window motor without seeking professional help.

Instructions

1

Pluck the window switch and lock switch from the rear door panel with the trim tool. Pull the wiring plugs out of each switch manually before setting the switches aside.

2

Remove the rear door panel retaining screws with either the Phillips screwdriver or socket set, depending on the year, make and model of your vehicle. If the panel will not lift off the rear door at this time, you may need to pry the door panel trim pins out of the door with the trim tool before removing the panel by hand. (This too will depend on the year, make and model of your vehicle.)

3

Raise the rear door window glass by hand and secure it with packing tape in the fully upright position to prevent unintended glass movement. Manually pull the wiring plug out of the rear window motor.

4

Remove the rear window motor retaining bolts with the socket set. Pull the old rear window motor out of the door through the door access hole. Position the new rear window motor in the door and bolt it in place with the socket set.

5

Reinstall the rear door panel on the rear door by reversing the door panel removal steps. Make sure to remove the tape from the window when done before you attempt to open the window.

Power valves on Holley carburetors are usually trouble free, but they do occasionally require replacement. Engine modifications may dictate the use of a different power valve. You may want to change your power valve if youve moved to an area that is significantly higher or lower in elevation than your previous residence. Also, power valves may rupture and require replacement if the engine backfires through the carburetor. There usually no need to remove the carburetor from the engine in order to replace the power valve.

Instructions

1

Remove the fuel line from the carburetors fuel bowl. Fuel line attachments vary. The most typical style is a slip-on fitting with a hose clamp. Use a screwdriver to loosen the hose clamp, and pull the hose from the carburetor. Use a rag to soak up any spilled fuel.

2

Remove the fuel bowl from the carburetor. Remove the four hex head bolts that retain the fuel bowl and metering block using the 5/16-inch nut driver. Using the handle of the screwdriver, tap lightly on the fuel bowl to loosen it, and set the fuel bowl aside.

3

Remove the metering block to expose the power valve. Again, tap gently on the metering block to free it from the carburetor main body.

4

Unscrew the power valve from the metering block using a 1-inch wrench.

5

Install a gasket on the new power valve, and thread the valve into the metering block. Tighten hand-tight plus 1/8 turn.

6

Using new gaskets, reassemble the carburetor. Attach the power valve side of the metering block to the main body, followed by the fuel bowl. Insert the fuel bowl bolts into the fuel bowl, and tighten the bolts finger tight plus 1/4 turn.

7

Reattach the fuel line to the inlet on the fuel bowl, and tighten the hose clamp.

The Power Stroke engines are a series of diesel engines that Ford manufactures for its heavy trucks. Ford made the 7.3-liter Power Stroke engine from 1995 to 2002, primarily for its line of Super Duty trucks. The engines in these vehicles use fuel injection, requiring a high-pressure fuel system to deliver fuel to the engine. The fuel pump for a 7.3-liter Power Stroke engine is on the undercarriage of the vehicle.

Instructions

1

Disconnect the cables on both negative battery terminals with a socket wrench to prevent the inadvertent discharge of fuel during the fuel pump replacement. Open the drain valve for the fuel filter with a socket wrench to relieve the fuel pressure. Replace the drain valve.

2

Raise the vehicle with a jack and support it with jack stands. Disconnect the wiring harness on the back of the fuel pump next to the frame rail.

3

Remove the retaining clip from the fuel line and detach the fuel line from the fuel pump. Disconnect the retaining clip that attaches the brake lines to the fuel pump bracket.

4

Disconnect the pinch bolt from the fuel pump bracket with a socket wrench. Push the bracket open and remove the fuel pump.

5

Place the new fuel pump in the fuel pump mounting bracket. Fasten the pinch bolt to the fuel pump mounting bracket and tighten it to 13 ft. lbs. with a torque wrench. Attach the brake lines to the mounting bracket with the retaining clip. Connect the fuel line to the fuel pump.

6

Attach the wiring harness to the fuel pump and lower the vehicle. Fasten the cables for the negative battery terminals with a socket wrench. Start the vehicle and check for leaks in the fuel system.

The Jetta has been manufactured by Volkswagen since 1979. Since its introduction, Volkswagen has equipped the Jetta with a stereo system. The Jetta stereo requires a switched power source and a constant power source to function properly. A switched power source is off when the vehicle is off, which prevents the stereo from draining the battery. A constant power source provides continuous power to the stereo, enabling it to retain station presets and the time.

Instructions

Constant Power

1

Open the hood. Disconnect the black negative wire connected to the battery, using a small crescent wrench.

2

Slide the factory radio from the dash of the Jetta, exposing the wires. This procedure will vary by model year. Consult the owners manual for specific directions.

3

Connect a power wire with in-line fuse to the positive terminal on the Jettas battery, using a small crescent wrench. The in-line fuse should be as close to the battery as possible.

4

Route the power wire from the battery through an existing hole in the rear wall of the engine compartment that separates the engine from the seating area. You may need to drill a hole to do this.

5

Route the power wire through the Jettas dashboard to the rear of the radio and trim the excess length with wire cutters.

6

Locate the yellow constant-power wire coming from the back of the factory stereo.

7

Remove the plastic wire coating from the ends of both the yellow wire from the radio and the power wire with in-line fuse. Connect them by twisting the bare wire ends together and wrapping with electrical tape.

Switched power

8

Locate the red switched-power wire coming from the back of the factory stereo.

9

Remove the plastic wire coating from the ends of the switched power wire and a 5-foot section of stereo wire. Twist the bare ends of both wires together and wrap in electrical tape.

10

Route the stereo wire through the Jettas dashboard to the fuse box.

11

Remove the radio fuse from the fuse box by erring to the diagram in the owners manual.

12

Remove the plastic coating from the end of the stereo wire that is closest to the fuse box and attach the bare wire to a fuse tap.

13

Reinsert the radio fuse and the fuse tap together in the fuse box.

14

Reinstall the radio and connect the negative battery cable. Close the hood.

DynoJets Power Commander has been a popular tool for backyard mechanics who want to fine-tune their engines fuel injection settings, particularly for track applications. The device connects to a motorcycles wiring harness and allows the user to load in preset mappings for fuel injection and ignition settings. Installing a Power Commander involves connecting the device directly to your bikes Electronic Control Module -- a job best left to a qualified mechanic if youre not familiar with engine electronics. Once connected, however, the Power Commander is a simlpe device to operate, allowing for hassle-free tuning of your machine.

Instructions

1

Hold down all three buttons on the face of the Power Commander unit and turn on the bikes ignition. Release all the buttons once the engine is idling normally. The Power Commander manual recommends waiting approximately 20 seconds before making any adjustments.

2

Note the position of the indicator light on the "Fuel Richness Gauge." The three buttons along the bottom of the Power Commander represent the "High," "Mid" and "Low" areas of your engines rpm range. As you press each button, the Fuel Richness Gauge will display a quantity for each of the three areas.

3

Tap the button once to increase the richness of the fuel mixture, noting the increasing level on the Fuel Richness Gauge. Increasing the richness will increase acceleration and throttle response, but may also increase wear on the engine. Hold each button down to decrease the fuel richness where necessary.

4

Think about how your engine reacts at different speeds. If your bike accelerates sluggishly from a standing start but you encounter an unmanageable burst of speed at around 50 miles per hour, increase the "Low" meter and decrease the "Mid." This should redistribute the power more evenly across the engines range.

5

Allow the bike to idle for another 15 to 20 seconds after completing your adjustments. This will cause the Power Commander to save any changes you have made.