1. Safety First:
* Disconnect the battery's negative terminal. This is crucial to prevent electrical shorts.
* Gather your tools: You'll need a wrench (likely a 13mm or 15mm, depending on the tensioner pulley), possibly a ratchet and extension, and a new serpentine belt of the correct size. Consult your owner's manual or a parts store for the correct belt size. Gloves are also recommended.
2. Locating the Tensioner:
* The serpentine belt tensioner is a pulley with a mechanism to release tension on the belt. It's usually located on the front of the engine, near the alternator or power steering pump. You might need to inspect the area to find it—it'll have a bolt or lever that allows you to rotate it. Consult a repair manual or online diagram of your specific engine for precise location.
3. Releasing Belt Tension:
* Identify the tensioner's release mechanism: This might be a bolt that you turn (clockwise usually tightens, counterclockwise loosens) or a lever that you can pry or push with a tool. This is where having a repair manual or online diagram becomes essential, as improper use can damage the tensioner.
* Carefully release tension: As you release the tension, you'll need to observe the belt to see how it's routed over the pulleys. Take note of the routing *before* you remove the belt. Take photos if you need to. This is crucial for correct reinstallation. A slight wiggle or rotation may be needed to remove the belt from the pulleys.
4. Motor Mount Issues:
* The difficulty around the motor mount is common. You may find you need to use a combination of maneuvering tools, and possibly some wiggling and working the belt around the mount. You might need to loosen the motor mount bolts (slightly!) to give yourself a fraction of an inch more space. DO NOT REMOVE THE MOTOR MOUNT ENTIRELY unless absolutely necessary. It's a major job and generally not required for a belt change. Only slightly loosen the bolts (turn them 1/4 to 1/2 a turn) to give yourself a bit of wiggle room. Retighten them completely afterwards.
5. Removing the Old Belt:
* Once the tension is released, carefully guide the belt off the pulleys.
6. Installing the New Belt:
* Carefully route the new belt around the pulleys, following the exact path of the old belt (use your notes or photos). Ensure that it sits correctly in the grooves of each pulley.
7. Releasing Tension & Checking:
* Slowly and carefully, release the tensioner to allow the belt to engage the pulleys.
* Check belt tightness: The belt should not be overly loose or taut. There should be little to no deflection if you push down on it midway between pulleys. If it's too tight or too loose, adjust the tensioner accordingly.
8. Re-connect the Battery
* Once satisfied, reconnect the negative battery terminal.
* Start your engine and listen for any squeaking or unusual noises.
Important Considerations:
* Repair Manual: A repair manual specific to your 1998 Chevrolet Malibu is highly recommended. It will have diagrams, torque specifications, and detailed instructions that are far more accurate than general advice.
* Online Resources: Search for "1998 Chevrolet Malibu serpentine belt replacement" on YouTube or other automotive websites. You'll likely find videos demonstrating the process for your specific engine.
* Professional Help: If you are uncomfortable working on your car, or if you're still struggling after trying these steps, consider taking your car to a qualified mechanic.
Remember safety first. If you're unsure about any step, don't hesitate to seek professional help. A wrongly installed belt can cause serious engine damage.
