推荐回答（2个）
如果空调要是有异响就说明很有可能是哪个部件没有安装好，启动空调时引起共振，建议你还是去正规的修理厂解决。
你的问题描述的不是清楚
你说车子发动的时候空调不是马上启动，本来就是这样的。你其实应该说是你按下AC开关后压缩机没有马上启动吧？
另外你能否描述杂音的源头和类型，比如杂音是从
仪表板
下面发出来的还是从发动机仓来的？杂音是金属振动的声音还是空气的
啸叫
声音等等。有没有觉得制冷量下降后者被撞一侧有
冷凝水
漏出来？
你回答了这些问题
估计就能搞清楚了。
如果你要直接去维修店请人检查的话
检查以下部分，HVAC壳体是否有因为撞击破裂，HVAC
鼓风机
是否有因为撞击导致松动出现振动偏大。其余的我觉得不会有问题。除非你觉得制冷或者制热效果不行了，如果是那样的话就要看是不是管路也出问题了
so
it
means
you
need
to
check
following
points:
big
housing(plastic
parts)
of
the
HVAC
to
check
if
any
leakage
due
to
the
break
GMV
loosen
also
result
in
the
abnormal
noise
.if
the
cooling
or
heating
performance
decrease
,you
also
need
to
check
the
AC
loop
components
such
as
pipes
etc..
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