Q: how to remove the spring loaded belt tensioner the serpentine belt is kept tight with.

asked by on September 02, 2016

i replaced the serpentine belt a year ago and now the belt is so loose that i can easily grasp it between my thumb and finger and can turn it 180 degrees plus between the two top driver side pulleys.when idling my alternator is not supplying enough voltage to keep the battery fully charged.i think this is because the belt is so loose. i removed the belt and the pulley but i don't know how to remove the spring loaded piece. your advice would be greatly appreciated.a mechanic friend told me that the spring loaded tensioners can get full of debris and rust so that they no longer hold the belt tight enough.thanks in advance for your help!!! norman

My car has 140000 miles.
My car has an automatic transmission.

Hey there. You will need to remove the entire housing that contains the spring. Belt tensioners are replaced as a unit. In the case of the 4.7L Toyota Motor, you will need to remove a couple of the plastic timing covers to allow the tensioner assembly to slide out and off of its studs. Once you remove the timing covers, you will be able to see the entire assembly and identify which bolts and nuts must be removed to remove the tensioner. You may need to remove the fan belt pulley to remove one or more of the covers. I suggest purchasing a new one first, then you will be able to see all that needs to happen. If you should need help with this project, or would simply like it to be done for you, have a certified technician from YourMechanic come to your car’s location to assist with your drive belt replacement.

Was this answer helpful?
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

Get a quote

What others are asking

Car will not start - 2006 Volvo S40

Hi and thanks for your question. There are three things that could cause this situation. Your vehicle could have a failed starter, a failed fuel pressure regulator, or a break in the wire from the ignition switch to the starter...

Battery light on and now car won't start

From what you've described, it sounds like a belt broke. All of those systems are belt-driven. A visual inspection would easily confirm this. Don't try to start your engine, as overheating is the main risk for your engine now. I'd...

Engine makes a high purring sound and won't turn off when key is taken out.

Hi there. What you are describing if often caused by multiple different mechanical system failures, ranging from an ignition system failure to a damaged ignition lock cylinder or electrical connection. Since you're also experiencing issues with engine smoke, it's probably...

Related articles

Common Signs Your Drive Belt Is Loose
The most common sign of a loose drive belt is noise, and it can range from a barely audible squeak to an...
How Long Does a Water Pump Pulley Last?
The The pulleys and drive belts on a car help to ensure that everything is getting the power it needs. Without these components working properly, a car will usually not be able to run at all. The water pump pulley...
The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...