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Old 06-04-2009, 11:46 AM
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rkvons rkvons is offline
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Re: A Gulping Sound?

Quote:
Originally Posted by demonadark View Post
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.
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