Jeep Comanche Workshop Manuals and Repair Manuals

To change the oil in your Jeep Comanche, start by locating the oil drain plug underneath the vehicle. Position a drain pan beneath the plug and remove it using a socket or wrench. Allow the old oil to fully drain out, then replace the drain plug. Finally, remove the oil filter, apply a thin layer of oil to the new filter's gasket, and install it. Refill the engine with the recommended oil and check the oil level using the dipstick.

To check the tire pressure in your Jeep Comanche, start by locating the tire valve stems on each tire. Remove the valve cap and place a tire pressure gauge onto the valve stem. Press firmly to get an accurate reading and check the pressure against the recommended PSI (pounds per square inch) listed in your vehicle's manual or on the driver's side door jamb. If the pressure is low, add air until the desired pressure is reached. Replace the valve cap and repeat for all tires.

To diagnose a faulty alternator in your Jeep Comanche, start the engine and turn on all electrical accessories, such as lights, radio, and air conditioning. Use a multimeter to measure the voltage at the battery terminals. A healthy alternator should produce a voltage between 13.8 and 14.2 volts. If the reading is significantly lower or fluctuates, it indicates a potential issue with the alternator. Additionally, you can inspect the alternator belt for signs of wear or damage. If you suspect a faulty alternator, it is recommended to have it tested and replaced if necessary by a qualified mechanic.

To jump-start your Jeep Comanche, you will need a set of jumper cables and another vehicle with a charged battery. Position both vehicles close to each other but ensure they are not touching. Connect the positive (+) terminal of the dead battery to the positive terminal of the charged battery. Then, connect the negative (-) terminal of the charged battery to a metal ground point on the dead vehicle, such as an unpainted bolt or bracket. Start the working vehicle and let it run for a few minutes to charge the dead battery. Finally, attempt to start the Jeep Comanche. Once it starts, remove the jumper cables in the reverse order.

To replace a brake pad in your Jeep Comanche, start by safely raising the vehicle and removing the wheel. Locate the brake caliper, remove the retaining bolts, and lift the caliper off the rotor. Slide out the old brake pad and replace it with a new one of the same size and type. Before reinstalling the caliper, compress the brake piston using a brake caliper tool or a C-clamp. Reassemble the caliper, reinstall the wheel, and repeat the process for the other wheels.

To replace a fuse in your Jeep Comanche, locate the fuse box, which is usually under the dashboard or in the engine compartment. Identify the fuse that corresponds to the malfunctioning component and use a fuse puller or needle-nose pliers to remove it. Inspect the fuse to determine if it is blown by looking for a broken metal strip inside the transparent plastic casing. If the fuse is blown, replace it with a new one of the same amperage rating. Test the component to ensure it is functioning properly.

To replace a headlight bulb in your Jeep Comanche, open the hood and locate the back of the headlight assembly. Twist the bulb socket counterclockwise to remove it, then pull out the old bulb. Insert the new bulb, making sure it is securely in place. Finally, reinsert the bulb socket into the headlight assembly and twist it clockwise to secure it. Test the new bulb by turning on the headlights.

To replace a radiator in your Jeep Comanche, start by draining the coolant from the radiator. Disconnect the upper and lower radiator hoses, as well as any other attached hoses or connectors. Remove the radiator fan and shroud if necessary. Unbolt the radiator mounting brackets and carefully lift out the old radiator. Install the new radiator in the reverse order, ensuring all hoses and connectors are securely reattached. Refill the cooling system with fresh coolant and check for any leaks.

To replace a serpentine belt in your Jeep Comanche, locate the belt tensioner pulley and use a wrench or socket to rotate it counterclockwise. This will relieve tension on the belt and allow you to remove it from the pulleys. Carefully route the new belt around the pulleys according to the belt routing diagram found in your vehicle's manual or under the hood. Rotate the tensioner pulley again and slide the new belt onto it. Release the tensioner, ensuring the belt is properly seated on all pulleys.

To replace a spark plug in your Jeep Comanche, start by disconnecting the spark plug wire from the old spark plug. Use a spark plug socket and ratchet to remove the old spark plug from the cylinder head. Check the gap on the new spark plug using a gap tool and adjust if necessary. Install the new spark plug by hand, then tighten it with the spark plug socket and ratchet. Finally, reattach the spark plug wire to the new spark plug.

To reset the maintenance light in your Jeep Comanche, turn the ignition switch to the "ON" position without starting the engine. Fully depress the accelerator pedal three times within 10 seconds. The maintenance light should start flashing, indicating that the reset procedure has been initiated. Once the light stops flashing and remains off, turn off the ignition and start the engine to verify that the maintenance light has been successfully reset.

The frequency of air filter replacement in a Jeep Comanche depends on driving conditions and the type of air filter used. As a general guideline, it is recommended to inspect the air filter every 12,000 miles and replace it every 30,000 miles or sooner if it appears dirty or clogged. However, if you frequently drive in dusty or off-road environments, you may need to replace the filter more frequently. Always refer to your vehicle's manual for specific recommendations.

If the check engine light in your Jeep Comanche is illuminated, it indicates that the vehicle's onboard diagnostic system has detected a potential issue with the engine or emissions system. It is recommended to have the vehicle scanned for trouble codes using a diagnostic scanner to pinpoint the specific problem. Once the issue is identified, you can decide whether to address it yourself or take your vehicle to a qualified mechanic for further diagnosis and repair.

If your Jeep Comanche's engine overheats, the first step is to turn off the air conditioning and turn on the heater to help dissipate the heat. Safely pull over to the side of the road and allow the engine to cool down before opening the hood. Check the coolant level and refill if necessary. If the issue persists, it is recommended to have your vehicle inspected by a qualified mechanic to identify and resolve the underlying cause of the overheating.

The type of transmission fluid you should use in your Jeep Comanche depends on the model year and transmission type. Refer to your vehicle's manual to identify the specific fluid recommendation. Generally, Jeep Comanches with automatic transmissions require ATF (Automatic Transmission Fluid), while those with manual transmissions typically require gear oil. It's crucial to use the correct fluid to ensure proper transmission function and longevity.