Thermostat Honda Fit 1.5L 2008-2013 Location

Exact Component Location

This video focuses exclusively on showing you the exact, precise location of the engine thermostat housing assembly on your second-generation (2008–2013) Honda Fit with the 1.5L engine.

To find it, open the hood and look at the passenger (right) side of the engine block, near the bottom. The thermostat is housed inside an aluminum water inlet housing bolted to the engine block, right where the lower radiator hose connects. Unlike many other vehicles where the thermostat is located at the top of the engine, the Fit’s design places it low, near the transmission/engine mating area.

How This Video Helps Your DIY Repair

Locating the thermostat housing quickly is the crucial first step for any successful cooling system service. By seeing the exact spot—framed by the alternator, the drive belt, and the lower radiator hose routing—you can plan your access strategy. This visual guide shows you how to navigate your socket and extension past the surrounding cooling lines and wire harnesses, saving you time and letting you proceed with confidence.

Symptoms of a Faulty Thermostat

A failing thermostat will significantly impact how your engine regulates its operating temperature. Common symptoms include:

• Engine Overheating: If the thermostat is stuck closed, coolant cannot flow to the radiator, causing the engine temperature to spike quickly.
• Slow Warm-up / No Heat: If it is stuck open, the engine takes an exceptionally long time to reach operating temperature, and your cabin heater will blow only cold or lukewarm air.
• Check Engine Light: Often triggers a P0128 diagnostic trouble code (Coolant Temperature Below Thermostat Regulating Temperature).

Safety Measures and Precautions

Before beginning any work, prioritize safety. Always wear proper protective gear, including safety glasses and mechanic gloves, to protect against scalding coolant and sharp metal edges.

Critical Safety Note: Because this component holds back a large volume of pressurized engine coolant, never attempt this when the engine is hot. Ensure the engine has been off for several hours and is cool to the touch. Always keep a drain pan beneath the vehicle to catch the coolant that will spill out the moment you unbolt the housing.

Expert Assistance and Comments

As an experienced mechanic with years of hands-on automotive repair knowledge, I am here to support you. If you have any specific questions about orienting the jiggle valve (air bleed valve) at the 12 o’clock position, cleaning the gasket mating surface to prevent future leaks, or how to properly bleed air pockets out of the cooling system after the refill, feel free to drop a message in the comments below, and I will help you with your car repair.