Fuel Pump
What it is
The fuel pump delivers fuel from the tank to the engine at the right pressure. Most modern cars use an electric pump inside the fuel tank, often as part of a sender assembly.
What it does
It keeps fuel pressure high enough for the injectors to spray correctly. A weak or failing pump causes hard starting, stalling, power loss under load and low-fuel-pressure codes such as P0087 — and a dead pump means a no-start.
Symptoms of failure
- Low fuel pressure codes such as P0087 (or P2293)
- Hard starting or long cranking
- Stalling and power loss under load or in heat
- Whining noise from the fuel tank
- No-start when the pump fails completely
Common fault codes
Which vehicles need it
All fuel-injected vehicles. In-tank electric pumps are standard; running the tank very low repeatedly shortens pump life.
Replacement cost
| DIY (part only) | $60–$300 |
|---|---|
| At a shop (parts + labor) | $400–$1,000 |
| Replacement interval | No set interval — replace on failure. Keep at least a quarter tank to help cool the pump. |
| DIY difficulty | Moderate–Hard (DIY) — tank access or removal; work safely with fuel |
| Recommended brands | Bosch, Delphi, Denso, AC Delco |
Where to buy the part
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Frequently asked questions
How do I know if my fuel pump is failing?
Classic signs are hard starting, stalling or power loss under load (especially when hot), a whine from the tank, and a low-fuel-pressure code like P0087. A fuel-pressure gauge confirms it.
Does running on a low tank damage the fuel pump?
Repeatedly running very low can, because the fuel helps cool and lubricate an in-tank pump. Keeping a quarter tank or more helps the pump last longer.