Q: cannot figure out how to use the tensioner pulley for serpentine belt removal

asked by on February 16, 2017

I'm trying to replace the alternator on my mountaineer and i can't figure out how to work the tensioner pulley to get the serpentine belt off. I'd like to see a picture or good video if possible

My car has 130000 miles.
My car has an automatic transmission.

Alternator Replacement $149.30 - $1391.75 Get a Quote

Hello, and thank you for writing in. We currently do not have videos available to share with you, however we can do our best to walk you through the process and how the pulley works. What you see when you look at the pulley is the black free spinning pulley that moves with the belt. This pulley is spring loaded and keeps the belt tight. To remove the belt, you must push down (loosening the belt), and when you have enough slack, pull the belt off the pulley. You can then proceed with taking off the alternator and making that repair. After that, you are going to need to reverse the procedure and push down the pulley while you put the belt back on. There is a bolt in the center of the pulley that you can use for leverage to help move the pulley to remove the belt. For more help, contact our service department to schedule an appointment.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

I want to change from automatic to standard transmission on my 84' chevy c10.

Hi there. Unfortunately this is not a service one of our mobile mechanics could offer, so we're not able to offer a quote or estimate. In regards to whether or not it can be done, the answer is "maybe". If...

P0401

Hi Mushi. Thanks for writing in today. Sometimes the initial diagnosis based on the error code is not the actual source of the problem. In the case of the P0401, the code indicates that that the engine control module (ECM)...

Doors and hatch not opening

Each of the doors would need to be checked to see if the lock actuators are keeping the doors locked or the latch in each door is bad. Removal of the inside door panels will be needed to access the...

I put in a new battery, now it reads service advancetrac & I have no power steering

Hi There, It sounds like you lost voltage. Load test your battery to be sure it was not a defective battery and check your charging system voltage. Certain circuits like the ABS module (AdvanceTrac) and the electric power assist steering...

The anti-theft is always on in my 1999 Mercury Sable, can I turn it off?

The easiest way to disable the security to your vehicle is to remove both battery cables on the battery. Leave the cables off for about 12 minutes. Hook up both cables and make sure that they are tight. Take the...

Car won't start - 1998 Pontiac Bonneville

Hi there. Disconnecting and re-connecting the battery, although the right thing to do while working on the fuel system, has tripped the security system and is not allowing a "start" sequence. (You don't mention it, but the security light in...

What is the cost to replace the tensioner pulley, idler pulley, and the drive belt?

Billing question sent to CS for the cost to replace the tensioner, pulleys, and the drive belts.

If I replace the intake manifold gasket, is any computer reset involved?

You should not have any kind of computer reset unless your check engine light is on now. If it is on now then you would still need to have it checked and cleared after doing the {intake manifold gasket.](https://www.yourmechanic.com/services/intake-manifold-gaskets-replacement) You...

Hesitation, stumbles, and sometimes stalls when accelerating

Hi there, thanks for writing in. It looks as if you've covered almost all of the bases. The only thing that I could think of without being there to complete a diagnostic inspection is that perhaps the idle control valve...

Related articles

How to Buy a Good Quality Idler Pulley
The The idler pulley system drives a car’s alternator and is part of a belt and pulley system that also covers power steering, the air compressor, and other devices. The pulley is essential; with all of the important equipment that...
How to Buy a Good Quality Idler Pulley
The The idler pulley system drives a car’s alternator and is part of a belt and pulley system that also covers power steering, the air compressor, and other devices. The pulley is essential; with all of the important equipment that...
The Mechanics of Cars: Simple Machines in Automobiles
Simple Simple machines are single, mechanical devices that help improve the daily life of humans by allowing them to work faster, easier, and more efficiently. Simple machines are considered to be the basic mechanisms that all complex machines...