Can you tighten alternator belt too much

Dear Anthony: A belt should never be over-tightened. … An over-tightened belt can burn out any bearing that the belt rotates on, including alternator, power steering pump, A/C compressor, idler pulleys, etc. An over-tightened timing belt can ruin any pulley bearing it is connected with.

How tight should an alternator belt be?

The required measure of tension in the serpentine belt is that it should not deflect more than ½ inch when twisted either way from the middle. If twisted more, the belt is loose, and if twisted less, the belt is too tight. Either of the positions does not work for the vehicle.

Can you over tighten a tensioner pulley?

Test the proper tension on the belts. … Over-tightened belts can cause internal damage to the bearings inside the pulleys. It can also cause overheating of the belts and premature wear. Put the vehicle back together by replacing the components required to access the belt tensioners.

What happens if alternator belt is too loose?

If your alternator belt gets too loose as you’re driving, it may cause your engine to stall. This means that you’re engine essentially shuts down and you’ll be forced to pull over onto the side of the road. Obviously, you wouldn’t want this happening on a busy street or rush hour traffic on the highway.

Can you adjust an automatic belt tensioner?

Cars equipped with an automatic belt tensioner adjust themselves over time and do not require adjustment. This article shows you the process to adjust drive belts on a pivot-style belt adjuster.

Why do alternator belts break?

Serpentine belts can fail in a few different ways. … This is usually the result of a belt in poor condition, or a problem with one of the accessory components being driven by the belt. A failed bearing in a pulley being driven by the serpentine belt will also cause the belt to break.

Can a loose drive belt cause overcharging?

A belt that is “too tight” or “too loose” will cause charging issues that, in turn, will cause the problems your customer describes. … Always verify belt tension prior to replacing parts. The next step will be to check the wires going from the battery to the alternator and the grounding cables.

Can a tight serpentine belt cause loss of power?

The water pump stops working too, so the engine starts to overheat after some time. At a point, the engine will pack up and will require being towed. So yes, a bad serpentine belt cause loss of power.

Can you adjust a serpentine belt?

Most serpentine belts have an auto-tensioner that automatically keeps the proper tension on the belt. However, some belts have an adjustment screw that applies tension to the belt. … To correct the problem, tighten your belt.

What happens if alternator belt snaps?

The Alternator Stops Powering Electrics If the serpentine belt breaks, the alternator stops generating electrical power. If that happens, your headlights will dim, the radio won’t work, and the battery will die. The battery warning light will also turn on because your battery isn’t being charged.

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Can you drive without alternator belt?

Once the car is running, the alternator supplies the power for these functions, AND recharges the battery. You can drive your car without either of those belts. However, you won’t get very far without the belt that turns your alternator.

How do I know if my alternator belt is broken?

Symptoms of a broken serpentine belt include loud slapping, squealing or knocking noises coming from under the hood. The battery-shaped charging system warning light might also come on because the alternator will stop charging the battery.

Can a belt tensioner making noise?

1. Grinding or squeaking noise from the belts or tensioner. The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner. If the tensioner is loose the belts may squeak or squeal, especially when the engine is first started.

Can you drive serpentine belt break?

The short answer is yes, your car will start even if the serpentine belt is broken or missing. To get the car going, the battery sends power to your starter motor. The starter motor provides enough power to get your engine moving and the combustion process started.

What does it sound like when a 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 ear-shattering squeal. It could happen when you’re driving, or when your engine is idling.

Can an oil leak cause a serpentine belt to break?

Generally, an oil leak should not cause a serpentine belt to come loose, however depending on the source of the oil leak and the severity of it, it could be possible.

Can an engine run without an alternator?

Well, yes, you sure can. However, the car won’t run for long without a working alternator. The battery, even if fully charged, won’t keep the engine running by itself for more than a couple miles. Also, running a typical car battery down to the point that the engine quits running is extremely hard on the battery.

How far can you drive a car with a dead alternator?

When the alternator fails, the battery has to feed the vehicle and since the battery has a finite capacity, it will discharge and leave you on the side of the road if you’re foolish enough to try driving anywhere but the repair shop with a bad alternator. So the answer to the question is, “ a few miles”.

How long will the battery last without alternator?

In this situation, the battery could last as little as 30 minutes. If you are lucky and could get up to two hours. Note: In case you have to start the car without an alternator, don’t turn off the engine once you’re going. Starting the car flattens the battery down quickly.