I recently (about 2-4 months ago) had a failed water pump replaced now about 4 months later i hear some weird liquid flowing noise when i rev up the engine and even while i'm driving. it does it with the heater on, and when the heaters off too. it does it when the engines cold or hot. what could this be?
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Re: Liquid-Flowing Noise When gas is pressed.
THIS SOUNDS LIKE THE COOLING SYSTEM HAS AIR TRAPPED IN IT, TO PURGE THE AIR JACK THE FRONT OF THE CAR UP AS HIGH AS POSS, THEN FILL THE COOLANT BOTTLE UP AND RUN ENGINE UNTIL IT IS HOT, TURN IT OFF AND RUN COLD HOSE WATER ON THE RADIATOR, THIS WILL PURGE THE AIR (IF ANY) OUT OF THE SYSTEM, RECHECK THE COOLANT BOTTLE LEVEL..
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My first question is make model and year. Second, are you saying the engine is boiling over into the overflow tank and onto the ground ? Is the tank about half full when the engine is cold ? Have you run the engine with the thermostat removed to test ? Usually when you can hear the coolant moving around, you have air in the system and it is not full of liquid coolant.
if your sure the cooling system is full than i wouldn't be surprised if you had a head gasket that has failed.
This would explain the water noise, and overheating.
With the engine cold remove the radiator cap, start the vehicle and let it idle. continue to monitor the coolant level in the radiator. top it off if it gets low. If you see a constant perculation of air bubbles coming out of the radiator than the head gasket is bad.
Sometimes you can also smell the radiator or the overflow. If it smells like exhaust than the head gasket is leaking.
ck for excessive play in the electric cooling fan blades - theses usually only come on when the car is hot or ac is used. You can also check this by locating the fan relay(s) and removing them when you hear the noise.
i would expect that the water pump has failed and would take a look closer in the morning and make sure nothing else has cracked, i expect the pump housing has but make sure its not a crack in the block or anything.
Several things can cause this overheating. Have you recently done a: 1. Check Hoses for Leaks 2. Check Radiator for Leaks --- Also, Change Radiator Cap ( can loose pressure there if cap is bad) 3. Check Water Pump for Leaks. If Water Pump is bad, you will hear a loud noise from it 4 Complete Tune Up? Should be done at least 1x a Yr. Depending on how much you drive the Vehicle. Includes: Plugs, Plug Wires, Gas Filter, Air Breather Filter, PCV Valve, Adjust Timing, Check Belts -- see if worn 5. Changed your Thermostat & Gasket and have the correct degree Thermostat in the Vehicle? 6.. Had your Radiator Rod and Cleaned out? 7. Temperture Sending Unit (located near Thermostat) could be bad 8. 02-Sensor(Generally located in the Exhaust Manifold - needs a socket with a space in it to allow the Socket to fit over this top wire of the 0-2 Sensor ) 9. Change oil and oil Filter. 10. Change Gas Tank Cap ---
Do all this yearly ( except the Radiator Rod & Clean ( do every 2-3 yrs), and you should not have any over-heating nor stalling out, etc. and should pass emissions as well.