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Radiator & Cooling System Repair in Simi Valley

An overheating engine can cause serious and expensive damage. Perry's Quality Auto Repair provides complete cooling system diagnostics, repair, and maintenance to keep your engine running at the correct operating temperature, especially important during Simi Valley's warm summer months.

An overheating engine can cause serious and expensive damage. Perry's Quality Auto Repair provides complete cooling system diagnostics, repair, and maintenance to keep your engine running at the correct operating temperature, especially important during Simi Valley's warm summer months.

Expert engine bay service at Perry's Quality Auto

What We Do

  • Radiator repair and replacement
  • Water pump replacement
  • Thermostat replacement
  • Coolant system flush and refill
  • Cooling fan repair and replacement
  • Coolant hose inspection and replacement
  • Heater core repair and replacement
  • Coolant leak diagnosis and repair
  • Pressure testing for hidden leaks
  • Overflow tank and cap replacement

Frequently Asked Questions

Most manufacturers recommend a coolant flush every 30,000 to 50,000 miles or every 3 to 5 years. In Simi Valley's warm climate, more frequent flushes help prevent corrosion and maintain cooling efficiency.

Common causes include low coolant, a failing thermostat, a bad water pump, a clogged radiator, or a cooling fan that isn't working. If your temperature gauge is in the red, pull over safely and call us.

Driving with a coolant leak is risky. Even a small leak can lead to overheating, which causes engine damage. If you notice coolant puddles or your temperature gauge rising, bring your vehicle in for inspection.

Other Services

Our Warranty

Every repair is backed by our industry-leading 2-Year / 24,000-Mile warranty. Coast-to-coast coverage on parts and labor.

Read Warranty Details →
Knowledge Hub

Cooling System Repair Questions, Answered

Answers to the most common cooling system repair questions Simi Valley drivers ask — straight from our ASE Certified technicians.

Why is my car overheating?

If your car's temperature gauge is climbing into the red or you see steam from under the hood, your cooling system may be struggling to keep the engine cool. Common causes include low coolant levels from leaks, a stuck thermostat blocking flow, a failing water pump not circulating coolant properly, clogged radiator fins restricting airflow, or a broken radiator fan. In hot Simi Valley traffic, these issues can escalate quickly, risking serious engine damage like warped heads or blown gaskets. Pull over safely, turn off the engine, and avoid driving until inspected. At Perry's Quality Auto Repair, our ASE Certified techs can diagnose the problem fast with a pressure test and get your cooling system repair back on track, backed by our 2-Year/24,000-Mile warranty. Stop by for a cooling system inspection today.

What are the signs of a coolant leak?

A coolant leak in your cooling system often shows as colorful puddles (green, pink, or orange) under your car, especially after parking, or a sweet smell from the engine bay. You might notice low coolant levels requiring frequent top-offs, rising engine temps, or white smoke from the exhaust if it's internal. Leaks commonly come from cracked hoses, a faulty radiator cap, worn water pump seals, or damaged radiator. Ignoring it leads to overheating and costly repairs. Check your reservoir when cool and look for wet spots on hoses or the radiator. Perry's family-owned shop in Simi Valley uses pressure testing to pinpoint leaks accurately. Bring your vehicle in for a cooling system repair diagnostic—we'll fix it right with our 2-Year/24,000-Mile warranty.

What happens when a thermostat goes bad?

A bad thermostat disrupts your engine's temperature regulation, causing erratic gauge readings—spiking hot or staying too cold. If stuck closed, it blocks coolant flow to the radiator, leading to overheating; if stuck open, your engine runs inefficiently cold, hurting fuel economy and heater performance. Other signs include coolant leaks around the housing or poor cabin heat. This common cooling system failure affects all vehicles over time due to wear. Replacing it restores proper operation and prevents bigger issues. Our ASE Certified technicians at Perry's Quality Auto Repair in Simi Valley handle thermostat replacement quickly during cooling system service. Schedule a diagnostic to confirm and get it fixed under our 2-Year/24,000-Mile warranty.

How do I know if my water pump is failing?

Signs your water pump is failing include coolant dripping from a weep hole at the front-bottom of the engine, whining or grinding noises from the pulley area, higher-than-normal engine temperatures especially in stop-and-go, and corrosion around the pump housing. The pump circulates coolant through your radiator, engine, and hoses—if it weakens, overheating follows fast. Bearings wear out, seals fail, and impellers rust over 60,000-100,000 miles. Early detection via these symptoms saves your engine. Perry's ASE techs inspect belts, hoses, and the pump during cooling system checks. Visit our Simi Valley shop for repair backed by the 2-Year/24,000-Mile warranty—have it diagnosed before it strands you.

How often should I service my cooling system?

Flush and service your cooling system every 30,000-50,000 miles or 2-5 years, per most manufacturer guidelines, to remove rust, debris, and old coolant that clogs the radiator and corrodes parts like the water pump and thermostat. Signs it's due: discolored coolant, overheating hints, or inefficient heater. Regular maintenance prevents leaks, extends component life, and avoids breakdowns. Includes inspecting hoses, belts, radiator cap, and refilling with the right coolant mix. Since 2000, Perry's Quality Auto Repair in Simi Valley has kept family vehicles running cool with thorough cooling system service by ASE techs. Backed by our 2-Year/24,000-Mile warranty, come in for a flush and inspection to stay ahead of issues.

Still have questions?

Our team is happy to help — call (805) 522-5769 or book an appointment online.

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Call (805) 522-5769
Call (805) 522-5769