How to Remove the EGR on a Mercedes 300D


1. Locate the EGR valve of the Mercedes 300D in the back of the engine on the drivers side of the engine compartment. The EGR valve is a circular metal device with a vacuum hose attached to the top of the valve.
2. Remove the vacuum hose from the top of the EGR valve by hand and set it out of the way.
3. Unfasten the two bolts on the sides of the EGR valve with a socket wrench that secures the part to the engine.
4. Remove the EGR valve from the Mercedes 300D engine compartment.
Continue lendo

Troubleshooting BMW 3


1. Open the BMW's driver's door. Crouch down, and look into the leg space. On the left-hand side, near the left-side kick panel, you will find a computer outlet. In older 3-Series vehicles, this outlet will be concealed behind a panel, which will be easy to remove.
2. Connect your OBD-II scanner to this computer outlet. Scanners will either come with a diagnostic cable that will fit the outlet, or the scanner itself will directly fit into this outlet.
3. Climb into the driver's seat and set the OBD-II scanner onto your lap. Place your ignition key into the BMW and switch to the 'On' position. Some OBD-II devices may also need you to crank and run the engine.
4. Wait a few seconds for your device to retrieve codes from the BMW's PCM. You may be using a scanner that is not set for automatic code retrieval. In that case, consult your device's manual for the precise procedure and key in the command yourself. Button layout differs by brand of OBD-II scanner, and so the instructions will not be the same for all devices.
5. Read through the alpha-numeric codes on your device's display. Ignore everything do not start with 'P,' since you are looking for potential engine issues. The 'P' stands for 'powertrain,' and those codes cover malfunctions in the engine and the fueling system. Copy the codes onto a separate piece of paper, if your OBD-II scanner was not manufactured with USB-to-PC connectivity.
6. Find the meaning for each P-code you have written down. Your scanner's manual should have definitions for all the generic universal to OBD-II compliant vehicles. If you own a lower end, generalized code reader, your manual may only cover general device operations. OBD-II coding definitions are easily found online. Also, you will need to locate BMW's special set of diagnostic codes online. Your BMW's manual will neither have these codes nor the generic ones. Make a list of all the potential problems that will need to be investigated.
7. Make a decision, based on the definitions you found in Step 6. You can either drive the car to a mechanic for repairs or attempt a DIY fix yourself. If you decide to continue to troubleshoot the problems yourself, open the BMW's hood. Investigate not only the problem central to each specific OBD-II trouble code, but the system surrounding it. For example, P0400 deals with 'flow malfunctions' withing Exhaust Gas Recirculation system. Troubleshoot not only the EGR valve, but the EGR system as a whole.
Continue lendo

How to Replace Coolant Temperature Sensors


1. Allow the engine to cool to the touch. Place the drip pan under the radiator pet-cock. Open and let about 1 gallon of antifreeze to drain before closing. Disconnect the electrical connector on the coolant temperature sensor.
2. Remove the sensor with the appropriate wrench (the size will depend on the year, make and model of your car). Install Teflon tape around the threads of the new coolant temperature sensor.
3. Install the coolant temperature sensor and tighten just enough to feel that it is tight. Do not torque down on it, or it will distort and fail to work, or give false readings. Reconnect the electrical connector on the sensor.
4. Refill the radiator with antifreeze. Leave the radiator cap off. Start the vehicle and let it warm up. Watch for the thermostat to open. If you look in the radiator as it reaches 195 degrees F, the thermostat will open, and the fluid in the radiator will drop as the antifreeze begins to circulate and expels any trapped air. At this point, fill the radiator the rest of the way, and install the cap. Check to make sure the overflow bottle is half full.
5. Keep your eye on the temperature and the electric engine fans to see when they come on. They should come on when the temperature gauge shows just over half or at about 215 degrees F. If they work properly, you are finished. If they fail to come on, then there is an electrical problem. The coolant temperature sensor is defective, or the fans are no good.
Continue lendo

How to Reset the Door Locks in a 2002 Ml430


1. Insert the key for your 2002 ML430 in the ignition. Do not turn the key while in the ignition. You do not need to start the car to reset your key.
2. Press and hold the 'Lock' button displayed on your key fob while the key is inside the car's ignition.
3. Continue to hold the 'Lock' button down, and pull the key out of your vehicle's ignition. Keep holding the 'Lock' button even after the key is out.
4. Press the 'Unlock' button five times in a row. Make sure to keep holding the 'Lock' button when you do this.
5. Release the 'Lock' button to complete the resetting process.
Continue lendo

How to Replace Weatherstripping on a BMW


1. Pry the old weather stripping out of its place with a slotted screwdriver. Wrap the tip of the screwdriver with the shop rag if you are concerned about scratching the paint on your car's exterior panels as you remove the weather stripping. Start from one end, and slowly work your way around the perimeter of the window.
2. Pull the old weather stripping out of place once it has been loosened, and run a shop rag between the window and body panels to clean out any remnants of dirt.
3. Align the new piece of weather stripping with your window, and gently tap it into place using your rubber mallet. Start at one corner, and work your way around the perimeter of the window, just as you did when removing the old weather stripping.
Continue lendo

How to Install an A4 Stereo


1. Pull the release handle under the dashboard on the driver's side of the Audi. Move to the front of the car and lift the hood. Turn the bolt on the negative battery cable's clamp two full rotations with the 10mm wrench. Lift the cable from the battery and move it to the side. Return to the A4's cabin.
2. Insert the four stereo removal keys into the slots near the corners of the stereo deck. The keys are available through Audi or Volkswagen dealers, as well as through aftermarket car audio outlets.
3. Place two fingers from each hand inside the rings at the ends of the keys. Pull out on the tools to engage the release mechanisms on the sides of the stock radio while pulling the unit from the dashboard.
4. Pull the stereo wiring connectors by the plastic wire binders until they disconnect from the outlets on the back of the Audi's head unit. Remove the antenna cable lead from the outlet on the factory radio's rear panel.
5. Slide the installation cage into the A4's stereo mounting dock. Push the metal sleeve into the dashboard until the front edge is level with the face of the dashboard. Fold the metal tabs at the corners of the cage with the flat screwdriver to secure it into the dock.
6. Gather the stereo wiring and antenna cables from inside the stereo dock. Pull the cables to the front of the installation cage. Plug the stereo wiring leads into the wiring harness adapter. See the adapter's manual for correct connection locations.
7. Connect the wiring harness adapter lead connectors to the outlets on the rear panel of the aftermarket stereo deck. The wiring harness leads can only connect to the stereo unit one way. Insert the antenna cable lead into the stereo's antenna input.
8. Push the stereo unit into the installation cage until it locks into place within the Audi's stereo dock. Return to the engine compartment.
9. Replace the negative battery cable clamp onto the A4's negative battery terminal. Tighten the bolt at the end of the clamp with the wrench and close the Audi's hood.
Continue lendo

How do I Find Mercedes Benz Touch


1. Locate your VIN number on your dashboard.
2. Copy down the VIN number and type it into the Free VIN Decoder website.
3. Click the 'Decode!' button.
4. Click on the 'Colors' tab to see which paint colors and codes are associated with your VIN.
Other options
5. If you don't have an Internet connection, take your VIN number to your local Mercedes-Benz service department or auto-body shop. Either place will be able to help you look up and decode the VIN number.
6. Ask your local reference librarian. Many libraries have auto repair manuals and books in their reference section.
7. Join an online Mercedes Benz enthusiast's group. A quick Internet search will bring up many options depending on the type of car or year of car you own.
Continue lendo

How to Install Spark Plugs in a 1997 BMW 328i


1. Look on the underside of the 328i’s hood and find the emissions label. Find the spark plug gap listed on the emissions label. Check the gap on all six new NGK BKR6EK, or equivalent spark plugs, with a spark plug gap tool. If the gap is not within the specifications listed on the emissions label, exchange the spark plugs for new ones, as they are not adjustable.
2. Unscrew the engine oil cap and pull upward on the passenger’s side of the engine cover -- the one that reads “BMW” -- to remove it, exposing the ignition coils below it.
3. Pull outward on the retaining tabs on a coil pack and pull the wiring harness from the coil pack. Remove the four coil pack-retaining nuts with a ratchet and socket. If the coil pack you are working on has a ground strap attached to its mounting stud, make note of the wire’s position and pull the ground wire off the mounting stud -- only one coil has this wire. Pull the coil upward with a slight twisting motion to remove it.
4. Remove the spark plug with a ratchet, 6-inch extension and spark plug socket. Remove the spark plug from the spark plug socket. Press a new spark plug into the spark plug socket until the rubber insert inside the spark plug socket holds it in place. Hand-thread the spark plug into the engine with a 6-inch extension and a 6-inch socket.
5. Torque the spark plug to between 15 to 22 foot-pounds with a torque wrench, 6-inch extension and spark plug socket.
6. Line up the boot on the bottom of the coil pack with the top of the spark plug. Press the coil pack downward until you feel it click onto the spark plug. Press the coil pack wiring harness into the receptacle on the coil pack until the locking tabs click into place.
7. If the coil pack you are reinstalling had the coil ground wire attached, slide the ground wire onto the coil’s mounting stud. Hand-tighten the four coil pack nuts, then tighten them with a ratchet and socket.
8. Repeat Steps 3 through 7 to replace the remaining five spark plugs.
9. Line up the pins on the underside of the engine cover with the rubber mounts on the top of the engine, and set the cover on top of the engine. Tighten the oil cap to secure the cover in place.
Continue lendo

How to Troubleshoot an Audi Oxygen Sensor


1. Locate the OBD port next to the fuse box (on the left), down in the driver's-side foot well of the Audi.
2. Plug the power connector from the OBD scan tool into the open port next to the fuse panel.
3. Turn the ignition key to the "II" position, and wait for the scan tool to retrieve the trouble codes from the computer.
4. Read the display on the OBD scan tool. A reading of P1101, P1115, P1116, P1117, P1118, P1119, P1120, P1121 or P1122 indicates a problem with the oxygen sensor on your Audi.
Continue lendo

How to Reset 2001 BMW 325I Maintenance Indicator


1. Insert the key in the ignition, but do not turn on the vehicle.
2. Press and hold the odometer reset button, located on the instrument panel.
3. Turn the ignition switch to the 'ON' position. Continue to hold down the odometer button until it reads 'RESET.' Release the reset button.
4. Press and hold down the odometer reset button until 'RESET' blinks. Release the odometer reset button.
5. Press and hold down the odometer reset button until 'RESET' is replaced with 'END SIA.' Release the odometer reset button.
Continue lendo
Subscribe to: Posts (Atom)