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Get your free estimateFAAC Gate Motor Replacement: The Los Angeles Owner’s Guide
If your FAAC gate opener has stopped responding, we stock and install FAAC-compatible gate motors across Los Angeles, with most replacements running $850 – $1,450 installed depending on your model and swing vs. slide setup. We carry OEM and quality aftermarket options on the truck, and in most Los Angeles neighborhoods we can have a technician out the same day you call. The typical story we hear: the gate worked fine for years, then one morning it hums without moving, or it opens halfway and reverses, or the control board clicks but the motor shaft doesn’t turn. That’s the moment owners start Googling, and it’s usually the motor itself, not the board.
Which FAAC Models This Applies To
FAAC has been building gate automation since 1965, and their lineup breaks into two main families we work on constantly in Los Angeles: the swing-arm 400 and 390 series (the 400, 402, 415, 391, and 770) and the slide-gate 740/741 and 844 series. Within those, the motor assembly often carries a label on the housing with the FAAC part number stamped near the capacitor or on the under-plate, and matching that number, not the opener’s marketing name, is what gets you the right fit. Here’s a compatibility gotcha we see all over LA: the FAAC 400 and 402 look nearly identical from the outside, but the 400 uses a 24V motor and the 402 a 115V unit. Install the wrong voltage and you’ll fry the new motor on first cycle. We don’t guess; we read the plate. Calder Gate Repair Los Angeles is an independent service provider, not affiliated with FAAC, which means we’re free to recommend the part that actually fits your gate and your budget, whether that’s an OEM FAAC motor or a reputable aftermarket equivalent from brands like US Automatic or DoorKing-compatible units we’ve tested in the field.
Styles & brands we work with





Signs Your FAAC Gate Motor Replacement Is Failing
Motors rarely die without warning. Here’s what Los Angeles homeowners usually notice first:
- Humming with no movement. The capacitor or start winding is going. You’ll hear the electrical buzz, but the arm or chain stays put. This is the most common FAAC failure we see, especially on swing gates that cycle dozens of times a day in neighborhoods like Silver Lake or West Adams.
- Gate opens halfway, then reverses or stalls. The motor’s torque has dropped. It may be overheating, or the gearbox grease has broken down, causing the safety circuit to trigger even when nothing’s in the way.
- Intermittent operation; works sometimes, dead other times. This usually points to worn motor brushes (on DC units like the 770) or a thermal overload switch tripping as the motor runs hotter than designed. On hot Valley afternoons, this gets worse.
- Loud grinding or a clunking noise from the base of the operator. That’s often the worm gear or reduction gear stripping against the motor shaft. Continuing to run it grinds metal shavings into the housing and turns a motor-only job into a full operator replacement.
- Gate creeps or drifts after it stops, especially on an incline. The motor’s internal brake or lock isn’t holding. On any slope, this is a security problem, not just a nuisance. A gate that won’t stay closed is an invitation.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For most FAAC swing gate motors in Los Angeles, you’re looking at $850 – $1,250 installed for a standard 400, 402, or 770 swap. Slide gate motors (740, 741, 844) typically run $1,100 – $1,450 because the motor, chain, and gearbox work is more involved. The range depends on three things: whether we’re doing a direct motor-only replacement or replacing the motor plus worn drive gears, whether your unit is 24V or 115V, and how much wiring needs to be re-terminated inside the housing.
- Motor & controls: $450 – $750 (depending on OEM vs. aftermarket)
- Labor: $300 – $450 (typical 2 – 3 hour job)
- Drive gears, capacitors, limit-switch adjustment if needed: $100 – $250
We write the full price down before any work starts, and the number on the invoice is the number we agreed to at the door. Every motor replacement carries our 365-Day Done Right Promise: if the repair fails within a year, Calder returns at no charge. No call-out fee, no parts markup surprise, no re-quote on the second visit.
DIY or Call Us?
FAAC motors run on live 115V or 24V circuits, and the capacitor inside the housing holds a charge even after the breaker is off. If you’re not trained to discharge a capacitor safely, that’s a shock risk. There are a few things you can safely check: the manual release lever to see if the gate moves freely by hand (if it doesn’t, you may have a mechanical bind, not a motor failure), the breaker, and the condition of the wiring at the terminal block. But opening the motor housing, swapping a capacitor, or re-terminating line voltage is where we’d tell a friend to stop. One crossed wire on a 400-series board and you’re replacing a $400 control board on top of the motor. If your FAAC opener is doing anything described above, call us at (213) 322-1415 and we’ll diagnose it over the phone before we ever roll a truck. Tell me what it’s doing wrong and I’ll tell you what it actually costs to fix it, before I pick up a tool.
FAQs
A properly installed FAAC swing gate motor in Los Angeles typically lasts 8 – 12 years, though gates near the coast in places like Playa del Rey or San Pedro tend to see shorter lifespans because salt air accelerates corrosion on the housing and terminal connections. Slide gate motors often go 10 – 14 years. If your motor is over a decade old and showing multiple symptoms, replacement is usually cheaper than repeated repairs. Call (213) 322-1415 and we’ll give you an honest life expectancy for your specific model.
Sometimes, yes. If the problem is a capacitor, a brush set, or a limit switch, we can often repair the existing motor for $200 – $400. If the windings have burned or the gearbox has stripped, repair isn’t economical. We’ll never push a full replacement when a $250 fix gets you another five years. That’s what the free phone diagnostic is for.
Most FAAC motor replacements we do in Los Angeles take 2 – 3 hours on site, assuming the existing housing and mounting plate are in decent shape. If we need to replace the mounting plate or re-run wiring, plan for half a day. We bring the common parts for the 400, 402, 770, and 740 series on the truck, so there’s no week-long wait for a part to ship.
Yes. Our Los Angeles trucks carry FAAC-compatible motors for the 400, 402, 415, 770, 740, 741, and 844 series, along with capacitors, limit switches, and drive gears. We also stock parts for LiftMaster, Mighty Mule, and Ghost Controls gate openers, so if your FAAC is paired with a different brand’s accessories, we can usually address the whole system in one visit.
Written by Nico Alvarez, Owner, Calder Gate Repair Los Angeles at Calder Gate Repair Los Angeles, serving Los Angeles and nearby areas.