Strange Liquid Sound Behind Dash

9

92blustang

Founding Member

Jul 13, 2002

73

1

0

Aug 1, 2009

#1

• Aug 1, 2009

• #1

For the past week I start my car up and I hear a sound from just behind the middle of the dash that sounds like if you were to blow air thru a straw into a cup of thin oil. Its an odd liquid burbling sound and it seemed like today it actually increased in sound when I would rev up the engine a bit. Its sounds like its coming from my heater/ac vents right above the temp controls in the middle of the dash. What the heck could this be? Thanks.

 

BlownFiveLiter

have car, will race....wait, it doesn't run

15 Year Member

Nov 29, 1999

3,133

18

108

Chicagoland

Aug 1, 2009

#2

• Aug 1, 2009

• #2

Detonation.

 

9

92blustang

Founding Member

Jul 13, 2002

73

1

0

Aug 1, 2009

#3

• Aug 1, 2009

• #3

Yikes, really? It sounds so similar to liquid bubbling. I heard that detonation sounds like BB's or marbles in a can being shaken. Could detonation really sound like liquid bubbling?

 

mc0311grunt

Member

May 24, 2009

86

1

6

Los Angeles

Aug 1, 2009

#4

• Aug 1, 2009

• #4

is the car overheating and using water? if it is it could be your heater core getting ready to puke

 

G

gt03gt93

New Member

Jul 31, 2009

18

0

0

Aug 2, 2009

#5

• Aug 2, 2009

• #5

Probably heater core.

 

Vinnietbird

Member

Jun 2, 2005

584

3

19

Aug 2, 2009

#6

• Aug 2, 2009

• #6

gt03gt93 said:

Probably heater core.

Click to expand...

X2.Mine sounded like a small waterfall before I swapped it.

 

ShortThrow50

Member

Oct 22, 2006

923

2

16

Pa

Aug 2, 2009

#7

• Aug 2, 2009

• #7

i know exactly what sound you are talking about. it sounds like water flowing in a fish tank filter. My toyota did this for like a year and then a put a new radiator cap on. I think maybe there was air in the system so once the water pump turned it was pushing the flow of water through the heater core. I dont know, like i said, i put a new cap on and it went away. This makes sense that the cap was bad becuase i had to put coolant in the resivoir every now and then.

 

T

tiptopss

Member

Apr 27, 2009

48

0

7

Aug 2, 2009

#8

• Aug 2, 2009

• #8

yep, heater core

 

ShortThrow50

Member

Oct 22, 2006

923

2

16

Pa

Aug 2, 2009

#9

• Aug 2, 2009

• #9

tiptopss said:

yep, heater core

Click to expand...

If the heater core isnt leaking how could it be bad? Sounds more like lack of coolant and system isnt pressuirzed

 

9

92blustang

Founding Member

Jul 13, 2002

73

1

0

Aug 3, 2009

#10

• Aug 3, 2009

• #10

ShortThrow50, I usually do have to fill the coolant every month or two for some reason, and I notice every once in a while seeing a huge leak on the ground where I park which is coolant. Maybe that is the problem. How do you pressurize the coolant system? Thanks.

 

ShortThrow50

Member

Oct 22, 2006

923

2

16

Pa

Aug 3, 2009

#11

• Aug 3, 2009

• #11

i dont know how to do that test man. just run your car for a while and then pout it on jack stands and go under there with a light and try to track the leak first

 

LarsD

Founding Member

Jul 2, 2002

2,680

119

123

Texas

Aug 4, 2009

#12

• Aug 4, 2009

• #12

Rent a cooling system pressure tester from Autozone. It hooks up to your radiator in place of the rad cap and you pump it up.

 

K

keiser blade

New Member

Jul 29, 2009

35

0

0

Aug 4, 2009

#13

• Aug 4, 2009

• #13

the pressure tester usually runs like a 100 autozone, it will help u find the leak tho
later brandon