1979 Subaru FE Fuel Pump Cut-Off Switch: A Comprehensive Guide
This guide covers the essential safety switch that can prevent your 1979 Subaru FE from starting.
- If your engine cranks but won't start, check the fuel pump cut-off switch before assuming the fuel pump is bad.
- A faulty switch can cause the engine to stall suddenly, which is a major safety risk while driving.
- Standard Ignition is the primary aftermarket brand available for this part on the 1979 Subaru FE.
- Always inspect for fuel leaks before resetting a tripped switch to avoid a potential fire hazard.
Understanding the Fuel Pump Cut-Off Switch in Your 1979 Subaru FE
The fuel pump cut-off switch is a simple but critical safety part. In vehicles with an electric fuel pump, this switch acts as a circuit breaker that is triggered by the force of a collision. If the switch fails, it can either prevent your vehicle from starting or cause it to stall unexpectedly. Because these symptoms are identical to a bad fuel pump, it's important to check the switch first.
Symptoms of a Failing Fuel Pump Cut-Off Switch
A bad fuel pump cut-off switch can be tricky to diagnose because its symptoms mimic other fuel system problems. Here are the most common signs:
- Engine Cranks but Won't Start: This is the most frequent symptom. A faulty switch may permanently cut power to the fuel pump, preventing fuel from ever reaching the engine. The engine will turn over but will not fire.
- Engine Stalls Suddenly: The switch might fail while you are driving, cutting power to the fuel pump and causing the engine to stall.
- Switch Trips Randomly: A defective switch might become too sensitive, tripping from a large pothole or even normal driving conditions. This would require you to reset it repeatedly to keep the car running.
Pro Tip: Check the Switch First
If your car won't start, especially after hitting a curb, a large pothole, or being in a minor accident, locate and check the cut-off switch first. Pushing the reset button might solve the problem instantly and save you the cost of a new fuel pump.
Choosing the Right Aftermarket Part
For a vehicle like the 1979 Subaru FE, finding original equipment (OEM) parts is nearly impossible. The aftermarket is the primary source for replacements.
- Standard Ignition (Standard Motor Products): This is the main brand available for a 1979 Subaru FE fuel pump cut-off switch. Standard has been making aftermarket parts for over 100 years and is a trusted name among professional technicians. Their products are designed to meet or exceed the quality of the original parts they replace. Given the lack of other options, Standard Ignition is a reliable choice.
Vehicle-Specific Issues, Recalls, and TSBs
There are no recalls or Technical Service Bulletins (TSBs) issued by the NHTSA or Subaru for the fuel pump cut-off switch on the 1979 Subaru FE. Searches of owner forums also show no widespread, documented issues with this specific part. This lack of information is common for vehicles of this age.
Replacement Costs for a 1979 Subaru FE
The cost for this repair is straightforward since only one aftermarket part is available and OEM parts are not.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard Ignition) | $102.21 |
| New OEM | Not Available |
| Shop Labor | $75 - $150 |
Frequently Asked Questions (FAQ)
What exactly does the fuel pump cut-off switch do?
It is a safety device that shuts off the electric fuel pump during a crash. This prevents fuel from being pumped to a potentially damaged engine, reducing the risk of fire.
Where is the fuel pump cut-off switch on a 1979 Subaru FE?
While official documentation is unavailable, the location on similar vehicles from that era is often in the front passenger or driver's footwell, behind a kick panel. One forum user with a 1979 Subaru Brat suggested it may be located behind the plastic panel by the driver's left foot. Look for a small box with a reset button on top.
Can I just reset a tripped switch?
Yes. If the switch has been tripped, you can reset it by pressing the button on top. However, before you do, it is critical to check for any signs or smells of a fuel leak. If you see or smell gasoline, do not reset the switch, as this could start the pump and create a fire hazard.
Is Standard Ignition a good brand for my Subaru?
Yes, Standard Ignition (also known as Standard Motor Products) is a well-regarded aftermarket manufacturer with a long history of producing quality replacement parts for a wide range of vehicles. For this specific component on a 1979 FE, it is the primary and most reliable option available.
Technical Specifications
Function: Inertia-activated switch that cuts power to the electric fuel pump in a collision. Reset: Manual push-button. Available Aftermarket Brand: Standard Ignition.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.