A Gulping Sound?

[demonadark]

When I start my car up with no radio I can hear a gulping sound.. Almost sounds like my engine is gulping water down.. Any Ideas?

[tblake]

What year, what motor, and how many miles?

Could you make a sound clip for us?

[VR43000GT]

In some GM vehicles that I have been, you can hear the coolant from the radiator moving through the system when the water pump is in action making a gulping sound. I am almost sure that is what you are hearing.

[rkvons]

Originally Posted by demonadark

When I start my car up with no radio I can hear a gulping sound.. Almost sounds like my engine is gulping water down.. Any Ideas?

If you have the automatic climate control like I do on my 1998 GTP, you may be hearing the motors that control the temperature doors "Hunting". I don't know why they do it, but they do. I believe there is a signal from the PCM to the motor and then from the motor to the PCM. When the PCM controls the motor, the motor's position is fed back to the PCM. I think the motors are constantly moving around. This is just a guess.

[tblake]

Or he could have a coolant leak (LIM Gasket) causing coolant to drain out of the heater core. When he starts it, the heater core gets filled again.

Whats the coolant level at?

[richtazz]

It could just be the car is nervous, are you a bad driver?

Seriously though, as Tim asked, what engine do you have and are you losing coolant?