I noticed about a week ago a noise that I could only discribe as sound like gurgling water or boiling water that is coming from behind the dash....
It happens when lightly accelerating from a stop, and last about a second or two and then it goes away. It also changes with the RPM's. Also, I noticed that if you stop and then immediatly accelerate, it won't do it. You have to wait a few seconds (which you will then faintly here it).
I just tested it again before posting this, and it will actually make the noise if the truck is in park or neutral, and you give it some gas. It is most noticable in the truck, as I can't hear it when I have the door open and my head hanging out (I haven't been able to get someone to give it gas while I am looking in the engine compartment.
I have checked the passenger side carpet (as I have read it can sometimes be a bad heater core) and the carpet is completely dry.
However, given that it sounds like water, I could assume it has something to do with the cooling system or even the A/C (I tried to listen with the A/C on, but it either doesn't do it with the A/C on, or the fan overpowers the noise). So, given this, I had the following done withint he past six months:
- Accident repair in early December (Replaced A/C condenser and radiator along with coolant and refrigerant repalcement)
- Thermostat replacement last March along with new coolant
Any ideas of what I should be looking for?