The power control module (PCM) regulates the operation of your Audi A3 fuel pump through a relay. If the relay goes bad, your car's fuel pump won't be able to convey fuel from the tank to the engine. It would cause all sorts of drivability issues. So, if your Audi A3 is exhibiting symptoms of fuel pump relay failure, call your mechanic to get it replaced.

1. What Are The Signs
Of A Bad Fuel
Pump Relay In Your
Audi A3?

2. What’s a fuel pump relay?

3. Audi A3 depends on an
electrically controlled
pump to convey fuel
from the gas tank to the
engine.

4. Fuel pump relay plays
an important role in
this process.

5. Its job is to supply
electric current to the
fuel pump.

6. It assists the power
control module (PCM)
in regulating the fuel
pump operation.

7. If the relay goes bad, it
would put your Audi A3’s
fuel pump in jeopardy.

8. Audi A3 fuel pump relay
location

9. In most vehicles, you
can find it in the fuse
box near the engine.

10. However, in the case of
Audi A3, it’s located
inside the cabin or under
the hood next to the
battery.

11. Audi A3 fuel pump relay
failure- Symptoms

12. Difficult Starting Engine

13. If your Audi A3 engine
isn’t receiving the right
amount of fuel, it
won’t start.

14. So, if the fuel pump relay
goes bad, it would be
difficult for you to start
the engine.

15. Poor Acceleration

16. Loss of acceleration is
another noticeable sign
of having a bad fuel
pump relay.

17. Faulty relay puts your
Audi A3 fuel pump in
jeopardy.
When that happens the
engine fails to get the
requisite amount of fuel.

18. As a result of which, your
Audi A3 would struggle
to accelerate.

19. Engine Stalling And
Misfire

20. If your Audi A3 engine is
stalling more often,
there’s a good chance its
fuel pump relay has gone
bad.

21. Engine misfire is another
characteristic of having a
bad fuel pump relay.

22. Check Engine Light Is On

23. A faulty fuel pump relay
would obstruct the fuel
supply to the engine.

24. It would make your Audi
A3 engine run rough.

25. When the computer finds
out about it, it would turn
on the malfunction
indicator lamp
immediately.

26. Audi A3 fuel pump relay
failure- Causes

27. Some of the most common reasons
behind fuel pump relay failure in Audi A3
are as follows:-
 Voltage surge
 Bad fuses
 Damaged wiring
 Physical damage

28. Sum Up

29. A bad relay can disrupt
the power supply to the
fuel pump.

30. As a result of which, your
Audi A3 fuel pump won’t
be able to keep up with
the engine’s fuel demand.
And, you would
experience all sorts of
drivability issues.

31. So, the faulty fuel pump
relay in your Audi A3 has
to be repaired or
replaced on time.

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AUTO SERVICE
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