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2004 Grand Marquis high pitched sound near firewall.

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2004 Grand Marquis high pitched sound near firewall.

  #1  
Old 07-06-2018, 10:41 PM
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Join Date: Jul 2018
Posts: 1
Default 2004 Grand Marquis high pitched sound near firewall.

Hello.

As soon as I start my car and constantly while it is running, I hear a very high pitched sound that seems to be coming from near the firewall by the transmission fluid dipstick. The sound does not increase when I rev the engine and varies slightly while driving. Makes the same sound no matter if the A/C or heater is on or off. I have a stock 4.6L engine. It also triggered a check engine light.

Anyone have any thoughts as to what it could be?

EDIT: Problem fixed. It was a hose going into my passenger valve cover.
 

Last edited by DrClawizDead; 07-07-2018 at 05:37 AM.
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