P0410 & Loud Whine - Page 2

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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, P0410 & Loud Whine in Past Cadillac Vehicle Discussion; Whoa !!! That's true dedication to accuracy - to do a cutaway like that for a member !!!...
  1. #16
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it.
    Automobile(s): 2002.5 F55 STS - 66500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: P0410 & Loud Whine

    Whoa !!! That's true dedication to accuracy - to do a cutaway like that for a member !!!

  2. #17
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: P0410 & Loud Whine

    I would recommend a slightly less invasive method.

  3. #18
    turbojimmy's Avatar
    turbojimmy is offline Cadillac Owners Connoisseur
    Automobile(s): 1994 Fleetwood 60" Stretch; '07 Avalanche, '95 Nighthawk
    Join Date
    Apr 2004
    New Jersey

    Re: P0410 & Loud Whine

    Quote Originally Posted by Ranger View Post
    I would recommend a slightly less invasive method.
    Me too. The horns were easy to get at after this "modification", too. They were stuck blaring after the air bag deployed. The first thing I did when I got out of the car was unplug them. Seemed like the most immediate issue to resolve at the time.

  4. #19
    Terry s is offline Cadillac Owners Member
    Automobile(s): 2003 Deville
    Join Date
    Jun 2013

    Re: P0410 & Loud Whine

    2003 Deville 71,000 miles. I have the P0410 code only. No drivability issues and no noise. Does anyone have a procedure to test the system before I install the kit PN 19515548? The vacuum lines and hoses on top of the engine look fine.


    I just checked both valves and the both will hold 20" of vacuum.

    I also checked and on a cold start I have vacuum to both valves. Also the car has no history of the AIR pump making noise yet it had the P0410 code??

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