Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Adjusting Auxiliary Belt Tensioner

Model: Peugeot 406 MK 1 - Years: 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Part: Alternator

This video is currently unavailable

If you hear a squeaking noise coming from the engine bay that increases with acceleration, it is likely due to the slipping of the auxiliary belt caused either by deterioration of the belt itself or simply because it is not sufficiently tensioned due to incorrect adjustment of the tensioner.

To access the tensioner, first remove the box containing the engine management unit: open the cover, disconnect the connectors, extract the unit, and remove the box by unscrewing the pins at the bottom.

At this point, you can adjust the auxiliary belt tensioner by inserting an Allen key into the hole next to the fixing pin, turning it to increase the tension, and tightening the fixing pin.


Updated on 14 February 2026 by ScegliAuto


Related tutorials

Timing Belt Replacement
Timing Belt Replacement
Peugeot 406 (1995-2005 / MK 1) Access the engine bay and disconnect the negative terminal of the battery; then remove the air filter housing, the plastic engine cover, and the star…
How to Replace the Timing Belt on a Peugeot 406
How to Replace the Timing Belt on a Peugeot 406
Peugeot 406 (1995-2005 / MK 1) Learn how to replace the timing belt on a Peugeot 406. Lift the car on a column lift or jack and remove the front wheel using a screwdriver (remove t…
Replacement of the Belt and Tensioner
Replacement of the Belt and Tensioner
Peugeot 406 (1995-2005 / MK 1) Obtain the replacement belts, loosen the wheel nuts, and lift the vehicle securely. Unscrew the bolts and remove the wheel, brake, wing, and cover. R…

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos