Table of Contents
Identifying the Leak
When a coolant leak appears, the first step is to locate the source. The narrator notes, "So, we have a coolant leak coming from this area right here." This pinpointing is crucial because the repair method depends on whether the problem is a simple gasket failure or a more extensive housing issue.
Choosing Between a Gasket and Housing Replacement
Most leaks stem from a failed gasket. Replacing the gasket is a straightforward, cost‑effective fix. However, the video also mentions the option of swapping the entire housing, which comes with a new thermostat but is more expensive. The decision hinges on the extent of damage and budget.
Preparing the Vehicle for Work
Before any disassembly, the coolant must be drained. The narrator describes removing the plastic cover, which is secured by two 10 mm bolts and side clips. Using an angled pick or flat screwdriver, the clips are popped off, and the cover slides out. This exposes the coolant drain on the passenger side, which is then opened to allow the fluid to flow out.
Removing the Plastic Cover and Accessing the Housing
With the cover removed, the next step is to detach the housing. The narrator points out that the back fasteners have been changed to T20 bolts. By loosening these with a suitable socket, the housing slides out of the engine bay. The process is repeated on the opposite side, ensuring all clips and fasteners are removed before the housing is fully extracted.
Inspecting the Gasket and Housing
Once the housing is out, the old gasket is visible. It is flat and no longer sealing. The narrator demonstrates how to lift the gasket with a pick or screwdriver, then slide it out. The old housing can be reused if the sensor’s O‑ring remains intact; otherwise, the entire housing should be replaced to avoid future leaks.
Removing and Replacing Hoses
Before the gasket can be replaced, the hoses that run to the housing must be disconnected. The narrator uses a long screwdriver to pry the hose clamp off, then pulls the hose away. A small locking wire or retainer often holds the hose in place; a flathead screwdriver or a pair of pliers is used to release it. The same procedure is repeated for the return hose on the passenger side, which is opened by turning a small wing nut and allowing the coolant to drain.
Installing the New Gasket
After cleaning the mating surfaces, the new gasket is pressed into place. The video shows the careful insertion of the electrical connector, which has a red tab and a central black tab. The connector is secured by pinching the tabs and pulling it out. The hoses are then reattached, using a combination of pliers and a long screwdriver to maneuver around tight spaces. The bolts are tightened to the specified torque, but the narrator cautions against overtightening.
Reattaching the Housing and Re‑securing Fasteners
With the gasket in place, the housing is slid back into position. The T20 bolts are re‑torqued, and the plastic cover is re‑installed. The narrator emphasizes the importance of aligning the clips correctly and ensuring the cover sits flush to prevent future leaks.
Torque Specifications and Final Tightening
The narrator mentions using a torque spec for the bolts, noting that the values are not very high. He advises tightening just enough to secure the housing without crushing the gasket. A small electric ratchet can speed up the process, but manual torque is recommended for precision.
Bleeding the Cooling System
Once everything is reassembled, the coolant must be bled to remove air pockets. The narrator opens the radiator bleeder screw, fills the system with antifreeze, and watches the coolant flow out. After the bleeder is closed, the engine is started, and the system is checked for leaks and proper operation.
Final Checks and Clean‑Up
After the engine warms up, the coolant level is verified, and any excess fluid is drained. The narrator advises cleaning the area around the hoses to prevent future contamination. The video concludes with a reminder to keep the work area tidy and to double‑check all connections before driving.