Noise behind Dash
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Trailering
Joined: Dec 2009
Posts: 17
Likes: 1
Noise behind Dash
I have a 2010 F-250 Lariat. After it is running a while I hear a ticking noise that seems to be coming from behind the Dash. I shut down all accessories but it still contunues. It lasts from ten to twenty minutes then stops. Anyone out there have this happen?
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Do you have any thing acting strange? Most likely it's a relay that
is making the noise or maybe the blend door if it over to the passenger
side. Under dash sounds are a pain in the @$$ sometimes. Get some to
drive while you look and listen around. If you can get a good location on the
sound then someone can maybe tell you just what the things is that is
making the sound.
Sean
is making the noise or maybe the blend door if it over to the passenger
side. Under dash sounds are a pain in the @$$ sometimes. Get some to
drive while you look and listen around. If you can get a good location on the
sound then someone can maybe tell you just what the things is that is
making the sound.
Sean
Thread Starter
|
Trailering
Joined: Dec 2009
Posts: 17
Likes: 1
Nothing strange going on. Is the blend door activated electrically or by vacuum?
Do you have any thing acting strange? Most likely it's a relay that
is making the noise or maybe the blend door if it over to the passenger
side. Under dash sounds are a pain in the @$$ sometimes. Get some to
drive while you look and listen around. If you can get a good location on the
sound then someone can maybe tell you just what the things is that is
making the sound.
Sean
is making the noise or maybe the blend door if it over to the passenger
side. Under dash sounds are a pain in the @$$ sometimes. Get some to
drive while you look and listen around. If you can get a good location on the
sound then someone can maybe tell you just what the things is that is
making the sound.
Sean
Cargo Master
Joined: Oct 2012
Posts: 2,333
Likes: 35
From: South Carolina
Does it just do it after start up? You said it quits after 10-20 minutes. Might be thermal exapansion of something like a metal heater pipe sliding through a plastic bushing. Like the old radiator tick in houses.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
are hearing. It will make that type of sound as the coolant turns to vapor in the
coils. The only other thing would be (and this is a BIG MAYBE) a localized
hot spot in the cooling jacket of the engine and your hearing the coolant
boil (NOT VERY LIKELY)
Sean
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Mountain Pass
Joined: Nov 2007
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Would the refrigerant still do that when key is removed or switched to off position?
It stops as soon as key is switched off
It stops as soon as key is switched off
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Fleet Owner
Joined: Apr 2012
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From: Spanaway
Yes,
Typical Air Conditioning System
See the highlighted box? That is the expansion valve. Some times it's not really
a valve but more of an orifice the liquid refrigerant will evaporate into a vapor
and equalize the pressure and that can be the sound that your hearing.
I really am not doing the best job on the A/C 101 class here. If I got you to a point
where you are understanding it I did my best. If not let me know and I will try again.
Sean
Typical Air Conditioning System
See the highlighted box? That is the expansion valve. Some times it's not really
a valve but more of an orifice the liquid refrigerant will evaporate into a vapor
and equalize the pressure and that can be the sound that your hearing.
I really am not doing the best job on the A/C 101 class here. If I got you to a point
where you are understanding it I did my best. If not let me know and I will try again.
Sean
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