Car vibration while idling can be frustrating. Besides, it also indicates that your Volvo XC40 might have a serious technical issue that needs to be repaired immediately. To know more, have a look at this graphical presentation.

2. A shaky idling
indicates that there is
a bigger problem
waiting to be
discovered.

3. If left unaddressed, it
can cause irrepairable
damages to your
Volvo XC40.

4. So, let’s find out what
makes your Volvo
XC40 vibrate when
idling.

6. Bad Spark
Plugs

7. Spark plug generates
electric sparks for the
combustion of the
air-fuel mixture.

8. However, worn-out
spark plugs fail to
fire properly which
makes the engine run
rough.

9. Because of this, your
Volvo XC40 will
vibrate while idling.

10. Loose
Timing
Chain

11. Timing chain makes
sure that the
movement of pistons
and valves is properly
synchronized.

12. A worn-out timing
chain can break that
consistency, resulting
in engine vibration in
your Volvo XC40.

13. If you start seeing
cracks in the timing
chain, install a new
one immediately.

14. Worn-Out
Motor
Mounts

15. Motor mounts are
responsible for
dampening engine
vibration.

16. However, the broken
mount fails to do so,
resulting in car
vibration while idling.

17. So, have them
inspected and replace
the cracked ones.

18. Fluctuation
In “Lambda
Number”

19. Lambda number is
also known as the
air-to-fuel ratio
within the
combustion chamber
of the engine.

20. For smooth engine
operation, ʎ value
should be one.

21. If ʎ > 1, then the
engine is running
rich.

22. If ʎ < 1, then the
engine is running
lean.

23. Fluctuation in ʎ value
due to faulty air or
fuel intake system
can cause engine
vibration in your
Volvo.

25. Having a vacuum leak,
bad oxygen sensor,
clogged air filter, and a
faulty ignition coil can
also make your Volvo
XC40 engine run
rough.

26. If your Volvo XC40 is
vibrating at idle, then
contact a car mechanic
immediately.

27. https://autowerkstx.com/