If your engine was replaced but your car still stalls, you’re not imagining things—and you’re not alone. Persistent stalling after a major repair is scary, inconvenient, and expensive. This article explains, in plain English, how California’s Lemon Law may apply and what you can do next, including when to ask the California Lemon Law team at ZapLemon to review your situation.
Engine Replaced, Still Stalls? What CA Lemon Law Says
When an engine replacement doesn’t fix a stalling problem, it can signal an ongoing defect rather than a one-time glitch. California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—generally protects consumers when a vehicle has a defect covered by warranty that the manufacturer or its authorized repair facility cannot fix after a reasonable number of attempts. Stalling that affects drivability or safety often qualifies as a “substantial impairment,” especially if it happens at speed, during turns, or in traffic.
A “reasonable number of repair attempts” depends on the facts. California’s Lemon Law has helpful presumptions: for many vehicles purchased or leased new, two or more attempts for a serious safety issue (like repeated stalling) or four or more attempts for other issues, or a total of 30+ days out of service, may indicate the manufacturer had a reasonable opportunity to repair. An engine swap counts as one of those attempts—it doesn’t reset the clock. If the stalling persists, that history matters.
Warranty coverage is key. The Lemon Law typically applies to defects that arise during the manufacturer’s warranty period, which may include bumper-to-bumper and powertrain coverage. Certified pre-owned vehicles may also have manufacturer-backed warranties, while third‑party service contracts are different. Whether your vehicle is new or used, if the stalling started under warranty and continued despite authorized repairs—engine replacement included—you may have rights to a repurchase, replacement, or other remedies. Every case is fact-specific, and outcomes vary, so a tailored review is important.
Steps to Take and When to Call ZapLemon for Help
Start with documentation. Keep every repair order, invoice, and diagnostic report; make sure your complaint (“vehicle stalls,” “engine dies at idle,” “loss of power on freeway”) is written clearly on the work order each time. Note dates, mileage, weather, fuel level, and driving conditions when the stall occurs. If safe, record short videos showing warning lights, RPM drop, or no‑start conditions. This creates a timeline that shows repeated attempts and ongoing symptoms.
Work through the warranty process. Return to an authorized dealer promptly when the issue recurs, ask for a test drive with a technician to replicate the stall, and request a copy of the repair order whether the dealer finds a cause or not. Don’t clear codes or disconnect the battery before service, as that may erase useful data. Ask the dealer to check for Technical Service Bulletins (TSBs), software updates, or recalls related to stalling. If the vehicle is unsafe to drive, consider towing it to the dealer rather than driving.
Know when to elevate the issue. If the car still stalls after an engine replacement, if the dealer says “cannot duplicate” repeatedly, or if you’ve had multiple repair attempts or 30+ days out of service, it may be time to talk to a California Lemon Law firm. ZapLemon can review your records, explain how the Song-Beverly Act may apply, and discuss practical next steps. Deadlines (statutes of limitation) can apply, so timely action matters. A short consultation can help you understand your options without committing to any course of action.
This article is for general informational purposes only, is not legal advice, and does not create an attorney–client relationship. Every situation is different, and results cannot be promised or guaranteed. If you believe your vehicle may qualify as a lemon—especially if your engine was replaced and the car still stalls—contact ZapLemon for a consultation at (310) 489-3017 or visit https://zaplemon.com. Attorney advertising.