Did You Ever Get This Noise ?

[04MRADR]

Love the Marauder. Still going strong but the other day an intermittent noise is driving me nuts. Think of a high pitched smoke detector going off and this is what is happening in my dash. If I shut the automatic climate control off its stops. Sometimes when its off for a while it starts again so when I put Climate Control on again it stops. Sometimes a steady loud shrill other times intermittent. I notice while I'm accelerating it goes away and when I let up on the gas it comes back. Any thoughts ? Not sure if it's under the driver's side dash or not since have to have the engine running to hear it. Doesn't appear to be under the hood. Maybe a vacuum leak of some kind ? Was wondering if anyone ever had this happen ?

[Mike M]

Sounds like a vacuum leak. The climate control head in the dash has o-rings that go bad. About an hour job to fix. That may be the problem.

[JohnE]

I had this happen on my 2000 Grand Marquis a while back. If was a vacuum diaphragm actuator in the HVAC unit. Wasn't hard to change.


John

[04MRADR]

Thanks Mike and John. Kind of thought it was that especially since it doesn't do it so much while the pedal is down but as soon as I back off its very noticeable. Went to my mechanic this morning and he said sounded like a vacuum leak too. Only stopped by for him to listen to it and will take it in next week but I'll mention your suggestions. Thanks again. Have a great Labor Day weekend guys.