The document identifies several potential causes of engine hesitation in an Audi A3 when accelerating. These include a clogged EGR valve, a failed throttle position sensor, a dirty air filter, a bad ignition coil, and clogged fuel injectors. The EGR valve can stick when saturated with carbon, the throttle position sensor provides incorrect acceleration pedal input, a dirty air filter compromises the air-fuel ratio, faulty ignition coils cause hesitation, and clogged injectors misfire cylinders. To diagnose the problem, the mechanic should carefully analyze the symptoms and test each component that could be contributing to the hesitation.

1. FIND
THE
CAUSES
BEHIND
ENGINE
HESITATION
IN
AUDI
A3
WHEN
ACCELERATING
BY
SANTA
BARBARA
EXPERTS

2. When you step on the gas pedal; you will suddenly feel the
power has been lost in the engine.

3. Insufficient burning inside the
engine will make the vehicle
hesitate when driving.

4. When you hit the gas pedal, the
engine hesitation in Audi A3 can
make it seem like:
•
•
•

5. When you’re trying to
diagnose a hesitation or
stumble, perform the
diagnostic process
carefully and logically.

6. The below points define the causes
behind engine hesitation in Audi A3 when
accelerating.

7. CLOGGED EGR
VALVE

8. EGR valve directs a portion of exhaust
gases back into the engine to be
reburned.

9. When this valve becomes
saturated with carbon, it
can begin to stick or
hesitate the engine.

10. FAILED
THROTTLE
POSITION
SENSOR (TPS)

11. TPS informs the engine computer
of, how much pressure is being
put on the accelerator pedal.

12. When this sensor begins to
fail, the computer’s
strategies are thrown off
and cause hesitation.

13. DIRTY AIR
FILTER

14. Engine needs air, spark, and fuel to run
and the air filter can provide clean air
required by the engine.

15. If the air filter is getting dirty, the
equation of the air parts can be
compromised.

16. BAD IGNITION
COIL

17. All modern cars like Audi A3 are
equipped with ignition coils on
each spark plug.

18. When a coil starts to fail, it can
cause hesitation, stumbling, and
surging problems.

19. CLOGGED FUEL
INJECTORS

20. Fuel injectors have tiny
nozzles to deliver a spray
of fuel into the cylinders.

21. A clogged fuel injector can cause
a regular misfire and eventually
escalate to hesitates.

22. CONCLUSION

23. Repairs of the engine
hesitation problems will
depend on the causes
behind them.

24. Consult with a reputed
mechanic for
determining the causes
behind engine
hesitation in Audi A3
when accelerating.

25. Thank
You