Fuel Tank Breather Valve - CI - XELV70
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Product Information
Full details
The CI Fuel Tank Breather Valve XELV70 is an essential emission control component designed for automotive mechanics and vehicle owners performing fuel system maintenance on compatible passenger and LCV vehicles. Its primary benefit is the precise regulation of fuel tank pressure, which prevents vacuum buildup and ensures smooth fuel delivery to the engine. A key caveat to consider is that successful installation requires cross-referencing your vehicle's specific OEM part number, as this unit is intended only for select models with compatible 2-pin electrical systems.
All features
| Model Part Number | XELV70 |
|---|---|
| Brand | CI |
Extended Product Information
FAQs
How do I know if the XELV70 is compatible with my vehicle?
You must compare the OEM reference numbers provided in your vehicle service manual against the manufacturer specifications for the XELV70.
What is the function of the 2-pin connector?
The 2-pin connector provides the 12V power supply and signal required for the Engine Control Unit to actuate the valve.
Can I install this part myself?
If you have basic mechanical experience and the necessary safety equipment to work near the fuel system, it is a straightforward replacement.
Does this valve require any calibration?
No, the XELV70 is a mechanical-electrical component that does not require manual calibration; it functions based on the vehicle's computer commands.
What happens if I ignore a faulty breather valve?
A faulty valve can lead to poor fuel economy, engine performance issues, and failure to pass emissions testing.
Troubleshooting
Check engine light remains on after installation
Clear the diagnostic trouble codes (DTC) using an OBD-II scanner after installing the new valve.
Difficulty refueling or pump clicking off
Verify the breather valve is not stuck closed and check that associated vent lines are not blocked by debris.
Poor electrical connection
Inspect the 2-pin harness pins for corrosion or bent metal; clean with electrical contact cleaner if necessary.
Pros and Cons
Pros
- Meets or exceeds original equipment manufacturing standards
- Easy installation with standardized 2-pin connector
- Critical for maintaining correct fuel system pressure
- Durable construction for long-term engine performance
Cons
- Requires specific vehicle compatibility verification
- Not universal; must match specific OEM references
- Installation requires basic mechanical knowledge of fuel systems
Setup, Compatibility & Care
Before installation, disconnect the negative battery terminal to prevent electrical shorts. Locate the existing valve, which is usually situated near the fuel tank or charcoal canister. Carefully disconnect the 2-pin electrical connector and release the fuel hose clamps before swapping the units. Ensure all hose connections are secure to prevent fuel vapor leaks, which can trigger emissions alerts. Always check your vehicle's service manual to confirm the XELV70 matches your specific engine code and OEM part number requirements. No specific maintenance is required for the valve itself, but users should inspect the connecting hoses for cracking or brittleness periodically to ensure a long service life.