Engine repair and diagnostics in NJ means using on-board diagnostics equipment and hands-on inspection to find the exact cause of a check engine light, rough idling, stalling, or lost engine performance, then repairing it correctly the first time. At Three Brothers Auto Repair, an independent, family-run, ASE-certified shop at 370 Paterson Ave in East Rutherford, we provide engine diagnostics and repair services for drivers throughout Bergen County and the surrounding NJ area.
This page is our engine repair hub. Below you'll find a quick guide to matching your symptoms to the right sub-service, an overview of how our team diagnoses and repairs engine problems, what typically affects cost, and answers to the questions we hear most from customers looking for engine diagnostics near them.
">Which Engine Service Do You Need?
If you're not sure which service applies to your situation, match your symptom below to the likely service. This is a starting point, not a diagnosis — our technician will confirm the exact cause before any repair begins.
| Symptom you notice | Likely service | How urgent |
|---|---|---|
| Check engine light or other warning lights on, unclear cause | Car Electrics & Diagnostic in NJ | Get it scanned soon, even if the car runs fine |
| Rough idling, stalling, or noticeable loss of engine performance | Car Engine Repair in NJ | Soon — can worsen into engine damage |
| White smoke from exhaust, milky oil, or engine overheating | Car Head Gasket Repair in NJ | Urgent — stop driving and have it inspected |
| Car is due for scheduled timing belt service or you hear ticking from the engine | Timing Belt Replacement | Time-sensitive — a snapped belt can cause major engine damage |
| Engine misfires, hard starting, or it's simply time for a tune-up | Car Spark Plug Replacement in NJ | Moderate — schedule at your convenience |
How We Diagnose and Repair Engine Problems
Our technician starts every engine diagnostic service by connecting to your vehicle's on-board diagnostics system to pull stored codes, then follows up with a physical inspection to confirm the exact cause rather than just reading a code and guessing. This matters because a code points to a system, not always the specific part — a misfire code, for example, could trace back to a spark plug, a sensor, or something in the fuel or ignition system.
One of our founders, Mike, handles most of the engine diagnostic work at our shop, and from there our team coordinates whatever repair is needed, whether that's a spark plug replacement, a gasket repair, or a larger engine repair. We explain what we found and what it will take to fix it before any work starts.
What Affects Engine Repair Cost in NJ
Cost depends on what's actually wrong, how long it takes to isolate the problem, and what parts are involved. An engine diagnostic (first hour) typically runs $140–$180, a minor gasket or seal repair generally falls in the $250–$650 range, and a major engine repair is quoted by estimate and can run $1,200–$3,500 or more depending on scope.
An inspection and dye test, often used to track down an oil or coolant leak, typically runs $140–$200, while a valve cover or timing cover gasket job runs $350–$900 and an oil pan gasket reseal is usually $300–$700. For a full breakdown of pricing on other services, visit our prices page.
Why Local Drivers Choose Our Shop
We're an independent, family-run auto repair shop, not a chain, and every vehicle is worked on by ASE-certified technicians who take the time to find the exact cause of a problem instead of swapping parts and hoping. Because we're local to East Rutherford and Bergen County, we're easy to reach for follow-up questions or a second look if something doesn't feel right after a repair.
Whether you need a single engine diagnostic service or ongoing regular engine maintenance, our team treats your car the way we'd want our own family's vehicle treated. If you're dealing with warning lights, stalling, or any other sign of engine trouble, contact us and we'll get you scheduled.
