Thermostat replacement.
Restore steady engine temperature with professional thermostat replacement.
A stuck thermostat causes overheating or an engine that never warms up — hurting fuel economy, comfort and longevity. Our certified technicians diagnose the fault, replace the thermostat and gasket with OEM-quality parts, refill and bleed the cooling system, and verify proper operation. All backed by our 24-month / 24,000-mile warranty — and we come to you.
// Certified technicians · OEM-quality parts · 24mo / 24,000-mile warranty · we come to you
Typical cost
Cost varies with the make and model of the vehicle, thermostat location, and whether you choose an OEM or aftermarket part. A general breakdown:
- Parts: a thermostat (with gasket / housing) typically runs $20–$120 depending on the vehicle
- Coolant: a refill of fresh coolant usually adds $20–$60
- Labor: at our $125/hour shop rate, most jobs take 1–2 hours — roughly $125–$250
- Harder-to-reach designs: housings buried under intake or timing components can add labor time
- Diagnostics: initial testing and diagnosis typically takes 0.5 hours (~$62.50)
Related issues — a worn housing, hose or coolant temperature sensor — may add cost. You'll receive a written estimate before any work begins.
Typical service procedure
What's generally involved to restore steady cooling-system operation:
- Diagnosis to confirm the thermostat is stuck open or closed — checking temperature readings, gauge behavior and coolant flow
- Cool down & drain — safely relieve pressure and drain coolant to the level of the housing
- Access the housing — remove any hoses or components obstructing the thermostat housing
- Remove the old thermostat and clean the mating surfaces of old gasket material
- Install the new thermostat with a fresh gasket or seal, oriented correctly
- Refill & bleed the cooling system to remove air pockets
- Testing — run the engine to operating temperature, confirm the thermostat opens and the engine holds steady temperature with no leaks
What is a thermostat & what does it do?
The thermostat is a small but critical valve in your vehicle's cooling system. It regulates the flow of coolant between the engine and the radiator to keep the engine at its ideal operating temperature.
- Location: usually housed where the upper or lower radiator hose meets the engine.
- Function: stays closed when the engine is cold so it warms up quickly, then opens as temperature rises to let coolant flow to the radiator.
- Temperature regulation: by cycling open and closed it holds the engine in its efficient operating range.
- Why it matters: proper temperature control protects engine components, improves fuel efficiency and cabin heat, and extends engine life.
Signs your thermostat needs replacing
- Engine overheating — a thermostat stuck closed blocks coolant flow to the radiator
- Engine running cold — a thermostat stuck open never lets the engine reach temperature
- Temperature gauge swings — erratic readings that rise and fall unexpectedly
- Poor heater performance — weak or inconsistent cabin heat
- Reduced fuel economy from an engine that won't reach efficient operating temperature
- Coolant leaks around the thermostat housing
- Check-engine or temperature warning light on the dashboard
Three steps. We come to you.
Get a Quote
Request a quote online or set up a time to have your vehicle looked at.
Pick a Time
Choose time slots that work for you. We confirm appointments and send reminders.
We Arrive
Our mechanics bring everything needed to you — just provide a safe area for the work.
A safe place to work.
Safe Location
A safe place to work — not on busy roads or unstable / steep surfaces.
Reasonable Weather
We don't perform repairs during severe weather, for safety and quality.
Permission
Authorization from the property owner or management — parking-lot work requires permission.
Legal Areas
We don't perform repairs in areas restricted by law.
Common questions.
How is Fixitfor.us different from other auto repair shops?
Do you service all makes and models?
What should I expect during my appointment?
Are you legitimate?
Why should I choose mobile vehicle repair?
What type of parts does Fixitfor.us use?
Do you perform roadside repairs?
Across West Michigan.
Primary: greater Grand Rapids — Comstock Park, East Grand Rapids, Grandville, Kentwood, Walker and Wyoming. Secondary, from our Belding location: Belding, Greenville, Ionia and the surrounding areas.
View Service Area →Get your thermostat done right.
Request an estimate or call now. We bring expert thermostat replacement to your home or workplace.