Garage door springs fail without much warning — and when they go, they usually take the door’s functionality with them. Knowing how to recognize a broken spring helps you avoid forcing the door (which can cause additional damage) and helps you communicate the problem clearly when you call for service. Garage door spring repair can be dangerous and requires tools you don’t have laying around — don’t attempt to DIY it.

Here are the most common signs that your garage door spring is broken.

1. The Door Won’t Open

This is the most obvious sign. If your opener runs — you hear it, the belt or chain moves — but the door doesn’t go up, a broken spring is the most likely cause. Without functioning springs to counterbalance the door’s weight, the opener can’t do the job alone. Most modern openers are designed to detect this and stop rather than strain the motor.

Don’t keep pressing the button hoping it’ll work. Repeatedly forcing the opener against a broken spring can damage the motor or strip the drive mechanism.

2. You Heard a Loud Bang

A breaking torsion spring makes a sound people often describe as a gunshot, a car backfire, or a large snap from inside the garage. If you heard that sound — especially overnight or while the door wasn’t in use — there’s a good chance a spring let go. Check the spring above the door for a visible gap in the coil.

3. The Door Opens a Few Inches, Then Stops

Some openers have a force-sensing safety feature that cuts power if the door is too heavy to lift — which is exactly what happens when a spring is broken or too weak to assist. If your door rises 4 to 6 inches and stops, the opener is likely hitting its force limit and protecting itself from damage.

4. The Door Looks Crooked or Uneven

Doors with two extension springs (one on each side) may sag on the side where the spring broke. If one side of the door is visibly lower than the other, a spring on that side has likely failed. Continuing to operate the door in this condition can bend the tracks, snap a cable, or cause the door to come off track entirely.

5. There’s a Visible Gap in the Spring

A broken torsion spring — the horizontal spring above the door — will have a clear separation in the coil. It’s easy to see if you look at the spring directly. A 1- to 3-inch gap typically appears where the metal fatigued and snapped. This is the most definitive sign of a broken spring.

6. The Door Falls Faster Than Normal When Closing

Springs don’t just help lift the door — they also slow its descent. If the door slams down faster than usual or requires you to lower it carefully by hand, the springs may be broken or have lost enough tension that they’re no longer doing their job.

7. The Opener Has a Red Light or Error Code

Many newer openers display error codes or indicator lights when the door is too heavy to operate. If your opener shows a blinking red light or a numeric code (check your manual), a broken spring is one of the first things to investigate.

What to Do If You Think Your Spring Is Broken

Don’t try to force the door open. If you need to use your car urgently, the emergency release cord (usually a red rope hanging from the opener rail) allows you to disengage the opener and operate the door manually. With a broken spring, the door will be very heavy — use caution and don’t try to lift it alone.

Don’t attempt to replace the spring yourself. Garage door springs are under significant tension. Handling them without the proper tools and training carries a real risk of serious injury.

Call a garage door technician. Most spring replacements in the Prior Lake area can be completed the same day. A technician will confirm the diagnosis, replace the spring (and recommend whether the second spring should be replaced at the same time), and make sure the door is properly balanced before leaving.

Ready to Fix It?

If you’re seeing any of these signs at your home in Prior Lake or the surrounding area, Prior Lake Garage Door can typically get to you the same day. Give us a call to schedule a service.