Audi 90 Workshop Manuals and Repair Manuals

To bleed the brakes on your Audi 90, first locate the brake bleeder screws, which are typically located on the brake calipers or wheel cylinders. Attach a clear plastic tube to the bleeder screw and submerge the other end in a container of brake fluid. Have a helper press the brake pedal several times and then hold it down while you open the bleeder screw to release any air in the system. Close the bleeder screw and repeat the process until no more air bubbles come out of the tube.

To change the oil in your Audi 90, first locate the oil drain plug underneath the vehicle and remove it. Allow the oil to drain completely before replacing the drain plug. Next, remove the oil filter and replace it with a new one. Finally, refill the engine with the recommended amount of oil and check the oil level using the dipstick.

To check the transmission fluid level in your Audi 90, first make sure the vehicle is parked on a level surface and the engine is warm. Locate the transmission dipstick, which is typically located near the back of the engine bay. Remove the dipstick, wipe it clean, reinsert it, and remove it again to check the fluid level. If the fluid level is low, add the recommended type of transmission fluid until the level is correct.

To diagnose a check engine light on your Audi 90, you will need an OBD-II scanner. Connect the scanner to the vehicle's OBD-II port, which is typically located under the dashboard on the driver's side. The scanner will retrieve a trouble code, which can be used to determine the cause of the check engine light. Consult the repair manual or a mechanic to determine the best course of action to fix the issue.

To replace the air filter in your Audi 90, first locate the air filter housing, which is typically located near the front of the engine bay. Open the housing and remove the old air filter. Replace it with a new air filter, making sure to properly seat it in the housing. Finally, close the housing and make sure it is secured in place.

To replace the alternator on your Audi 90, first disconnect the negative battery cable. Locate the alternator, which is typically located near the top of the engine. Remove any brackets or hold-downs that secure the alternator in place and disconnect the wiring harness from the back of the alternator. Remove the alternator and replace it with a new one. Reattach the wiring harness and any brackets or hold-downs, and reconnect the negative battery cable.

To replace the battery in your Audi 90, first locate the battery, which is typically located in the engine bay or trunk. Disconnect the negative cable first, followed by the positive cable. Remove any brackets or hold-downs that secure the battery in place and lift it out of the vehicle. Place the new battery in the same position as the old one and reconnect the cables, positive cable first followed by the negative cable.

To replace the brake pads on your Audi 90, first remove the wheel and locate the brake caliper. Remove the bolts that hold the caliper in place and slide the caliper off the rotor. Next, remove the old brake pads and replace them with new ones. Finally, slide the caliper back onto the rotor and secure it in place with the bolts.

To replace the fuel filter on your Audi 90, first locate the fuel filter, which is typically located near the fuel tank or along the fuel line. Disconnect the fuel lines from the filter and remove any brackets or hold-downs that secure the filter in place. Replace the old filter with a new one, making sure to properly seat it in the housing. Reattach the fuel lines and any brackets or hold-downs.

To replace the headlights on your Audi 90, first remove the headlight assembly by removing any screws or bolts that hold it in place. Disconnect the wiring harness from the back of the headlight assembly and remove the old headlight. Replace it with a new headlight and reattach the wiring harness. Finally, reinstall the headlight assembly and tighten any screws or bolts that hold it in place.

To replace the serpentine belt on your Audi 90, first locate the belt tensioner, which is typically located near the top of the engine. Use a wrench or socket to release the tension on the belt and slide it off the pulleys. Replace the old belt with a new one, making sure it is properly routed around all of the pulleys. Finally, use the wrench or socket to reapply tension to the belt.

To replace the spark plugs in your Audi 90, first locate the spark plug wires and remove them from the old spark plugs. Use a spark plug socket to remove the old spark plugs and replace them with new ones, making sure to properly torque them to the manufacturer's specifications. Finally, reattach the spark plug wires, making sure they are securely in place.

To replace the thermostat in your Audi 90, first locate the thermostat housing, which is typically located near the top of the engine. Drain the coolant from the radiator until it is below the level of the thermostat housing. Remove the housing and old thermostat, and replace them with a new thermostat and gasket. Reattach the housing and refill the radiator with the recommended amount of coolant.

To replace the water pump on your Audi 90, first drain the coolant from the radiator until it is below the level of the water pump. Locate the water pump, which is typically located near the bottom of the engine. Remove any brackets or hold-downs that secure the water pump in place and disconnect the hoses and wiring harness from the water pump. Remove the water pump and replace it with a new one. Reattach the hoses and wiring harness, and refill the radiator with the recommended amount of coolant.