Garage door problems
Opener motor runs but the door does not move
When a garage door opener motor runs but the door does not move, the motor is turning but its power is not reaching the door.
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Written by HyreGarage Research Desk Primary-source research and fact checking
The short answer
When a garage door opener motor runs but the door does not move, the motor is turning but its power is not reaching the door. The simplest cause is a disconnected release trolley.
After that comes a stripped drive gear inside the opener, a broken or slipped chain or belt, or a door too heavy or jammed to move. Check the trolley with the door closed first.
If this is happening now
Stop and leave the door alone if you see a broken spring (a gap in the coil above the door), a loose or snapped cable, a door off its track or hanging crooked, or a door that has fallen.
Do not run the opener and do not pull the release cord on an open door: the springs and cables hold enough stored energy to cause serious injury, and CPSC says a door that is out of balance should be serviced by a professional.
Keep people and cars clear and call a garage door technician. You can also reach HyreGarage on (866) 582-8523.
Key takeaways
If the red cord was pulled, the opener runs without the door.
A stripped gear inside the opener.
Broken or slipped drive.
A spring problem. Stop.
What can I check safely?
With the door closed, see whether the trolley is latched to the door arm. Reconnect per the manual.
If it does not move while the motor runs, the gear inside is likely stripped.
A chain or belt hanging off its sprocket is visible from below.
Door closed, release pulled, lift a little. If it is heavy, stop.
What the motor and drive are doing
| What you see | Likely cause |
|---|---|
| Chain moves, trolley does not | Trolley disconnected. |
| Motor runs, chain or belt still | Stripped drive gear or sprocket. |
| Chain loose or off | See opener chain loose. |
| Motor runs, then stops, door moves an inch | Heavy or jammed door. |
Gear repair or new opener?
A gear kit is a known repair on many older chain openers. Whether it pays depends on the opener’s age, parts and safety features. An opener with no photo-eyes should be replaced. Use our opener selector if replacing.
What to ask before you sign
Ask for the balance test.
A heavy door strips gears.
The full ten-point checklist is on choosing a garage door company.
Where this goes wrong
It can burn out the motor or worsen damage.
An open door with a spring problem can fall.
The new gear strips again if the door is heavy.
Get connected
Tell us about the work
Three short steps: the job, your home, and how to reach you. Nothing goes to a garage door company unless you agree.
Free, with no obligation: a person at HyreGarage reads it and replies. Matching is not live yet, so this is not a quote or a dispatch line. If a spring has snapped or the door is off its track, leave it closed and call a local garage door company now.
Find a Garage Door Professional
A person at HyreGarage reads the request and replies. Matching is not live yet, so this is not a dispatch line.
Questions
Why does my opener hum but the door won’t move?
How do I reconnect the trolley?
Can a stripped gear be repaired?
Is it safe to lift the door by hand?
Written and audited by
HyreGarage Research Desk
Primary-source research, data analysis and fact checking
We are not a garage door company. We read the agency file, the code record, the standards document or the public register ourselves, compute the figure from it, and publish it with the source and the date we retrieved it.
Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. Our own company records cover ten states; nothing national is ever derived from them.
- 10
- states our own company records cover — and the limit of any claim made from them
- 3,901
- garage door companies in the store
- 457
- license records verified against a state board
- 0
- national claims made from a ten-state store
How this desk works
- Primary sources only. Injury counts come from CPSC. Housing counts come from the Census file, not from a summary of it. Code history comes from the building commission that adopted the code. We do not cite an article that cites a source; we retrieve the source and do the arithmetic ourselves.
- Every figure carries its retrieval date. Registers change, datasets are revised and codes are amended. A number without the date it was read cannot be checked, so every study states one.
- Fact, calculation and analysis are labeled apart. A quote is a quote, a HyreGarage computation says so, and an interpretation says “HyreGarage analysis”. Presenting our reading of a dataset as something the agency stated would be the easiest way to lose the only thing this desk is for.
- Limitations go above the fold. If a figure is an upper bound, a bracket, or an association rather than a cause, that is said before the figure is quoted rather than in a footnote underneath it.
- No DIY instructions for spring, cable or track work. Those components hold enough stored energy to cause serious injury, and CPSC records the consequences. We describe what has failed and what a competent repair involves; we do not tell you how to do it.
Authorship on this site is organizational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
Information on this page is general and varies with the door, the opener, local code and circumstance. It is not safety, insurance or legal advice.
Springs and cables hold dangerous stored energy: adjusting or replacing them is work for a trained technician. HyreGarage does not repair, replace or install garage doors.
This page explains the work so you can judge a quote and a company.