Q: Need a reliable brand for the belt tensioner.

asked by on October 19, 2016

I replaced the belt tensioner with a new AC Delco unit in June and it failed last week. I attempted to get two replacements (still brand new AC Delco) but they were both DOA when I pulled them out of the box, meaning they had zero tension on them. I think it's likely a poor design, but is there another brand that is considered reliable for this part? I wouldn't worry about it so much except that coolant has to be drained and dealt with because of how GM decided to route the heater inlet and outlet through the freaking thing. That makes changing it frequently extra special and something I'd rather avoid if possible.

My car has 95000 miles.
My car has an automatic transmission.

Hello and thank you for contacting YourMechanic. Shopping around for parts can be frustrating when it comes to specific brands. Some brands are not as good as other brands, however, a low quality belt and a high quality belt should not wear out less than 6 months.

If you have a serpentine belt on the engine, remove the belt and check all of the pulleys for any wobble and make sure that they are in good shape. Put the belt on, or a new belt, and then pull on the belt. If the belt was really tight to get on and won’t move much when installed, then the belt is the wrong size for that engine setup. You would need to be able to move the belt at least 1/4 inch on the tensioner to have the right amount of pressure.

I suggest Napa brand belts or go to the dealership for the OEM belt to keep the vehicle running correctly. If you need assistance with the belt, then seek out a professional, preferably a professional from YourMechanic to help you with a proper replacement of your belt tensioner at your home or office.

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

Need the ECU replaced in my car

Anytime the CEL is allowed to be continuously on you will never be informed of any vehicle malfunctions if and as they arise and they will arise. That circumstance alone means any decision about re-programming is a moot issue (you...

My car makes a knocking noise. It does it a little when I press the breaks. Sometimes I can drive it and no knocking noise then ot

Before you drive the car again, you need to find the lug wrench and check to be sure that all your wheel lugs are tight You might have one or more loose wheels. If you don't find a problem there,...

My car want start and when it do it shut down and want start until 30 minute or so. Now it want do nothing

When a car turns and won't start, it is called a "crank no start". When this occurs, the first thing you need to do is see what is missing. All internal combustion motors need spark, fuel, injector pulse and camshaft...

Related articles

Common Signs Your Drive Belt Needs Replacement
A car drive or serpentine belt keeps your engine running smoothly. Unusual noises from the engine and visible belt wear means it needs replacement.
Understanding the Pontiac Oil-Life Monitor and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Pontiac Oil Life Monitor (OLM) indicates when and what service your car needs.
The Best Used Cars to Buy for Occasional Drivers
Not Not everyone relies on their car on a daily basis. Maybe you aren’t the type that deals with a daily commute, and running from here to there constantly. If that’s the case, you may be looking for a car...