06 Bmw 325I Belt Diagram (2024)

FAQs

How do you find a serpentine belt routing diagram? ›

A: Commonly a belt routing diagram sticker is on the underside of the hood or in the engine compartment. If there is no diagram, make a sketch of the belt and pulleys before removing the belt. This will help you re-route the new belt correctly.

BMW Belt Tensioner Bolt = 25Nm or 18.4 ft-lbs, of torque plus 90°

The most common reasons a BMW 325i has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.

Because nearly all serpentine belts are symmetrical, a new belt's direction of rotation usually doesn't matter. What does matter, though, is that the new belt is routed correctly around the pulleys.

EXAMPLE: 6PK1003 » 6 - This indicates the number of ribs on the belt; therefore, this is a 6-rib belt. » PK – The “P” indicates a metric designation, and the “K” indicates the belt is automotive per SAE J1459. » 1003 - This is the effective length of the belt expressed in millimeters.

Most vehicles nowadays usually have a belt routing sticker located somewhere in the engine compartment, making it even easier.

Most tensioners are installed using only one bolt. Start by inserting a half inch drive breaker bar or ratchet into the hole in the center of the pulley. Twist the breaker bar clockwise to reduce the tension in the belt. This may not be particularly difficult if your tensioner has broken.

Discoloration – This can be caused by intermittent seizure of the pulley bearing or a bad tensioner, causing belt slip. Surface Build Up – A key indication of a worn out tensioner causing belt slip. Excessive Wear – Common on vehicles operated in dusty environments.

If too much air is added to the air and fuel mixture, then your engine will be rough idling. A dirty fuel injector can also cause rough idling.

The most probable cause of the vibrating generally happens near your wheels and tires. They plant the vehicle on the road, and if anything is out of place, you're going to notice. It may be something like a broken control arm or a broken transmission mount.

Why does my BMW shut off while idling? ›

This can be caused by a variety of factors, such as a faulty idle control valve, vacuum leak, or dirty throttle body. If the fuel level is too low, the engine may stall when making sudden stops or turns. Always ensure that your BMW has enough fuel to avoid this issue.

Misalignment pulleys or tensioner: If the belt is not properly aligned on the pulleys, it can wear unevenly or slip off entirely, leading to its premature failure. This situation usually happens if some of the components have been previously removed, replaced, and not returned in to place properly.

The squealing sound is most likely due to the belt slipping or a misaligned pulley. The noise is an indication that the belt needs to be replaced as soon as possible. Sometimes the squealing will start as a very light sound, but over time the squealing will get worse until the belt finally fails.

It's a good idea for customers to replace both the water pump and the timing belt simultaneously so that both parts are brand new and will wear at the same time.

If the belt is already out of place, locate the driver's manual or the under-the-hood placard, where you'll find a sketch of the routing.

How To Identify a V-Belt Pulley. The easiest way to identify a V-belt pulley is by finding the part number or identification components on the pulley itself. Different brands, as well as different pulley types, have various ways they may display these numbers.