2001 Deville hesitates while accelerating
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Northstar Engines and System Technical Discussion Discussion, 2001 Deville hesitates while accelerating in Cadillac Engine Technical Discussion; The deville seems to hesitate while accelerating. I changed the spark plugs but don't know the problem please help...
  1. #1
    lozartmn is offline Cadillac Owners Member
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    2001 Deville hesitates while accelerating

    The deville seems to hesitate while accelerating. I changed the spark plugs but don't know the problem please help

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  3. #2
    Submariner409's Avatar
    Submariner409 is online now If it won't run, slap in a big stereo
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: 2001 deville hesitates while accelerating

    Just above this post is a thread - a "sticky" - titled "How to pull codes" from your car's built-in diagnostic code system. Study and use the proper year/model procedure, write down all codes found - they read out as a letter and 4 digits followed by Current or History - and then return to the sticky to open the link to all OBD-II code definitions. Decipher all your codes and post it all here.

    Your engine takes AC Delco #41-987 Platinum spark plugs - for some reason Northstars do not like other types/brands (DENSO and AC Delco, in these plugs, are one and the same.) Did you check the coil cassettes for cracks at the coil towers, and did you clean and check the boots for carbon tracking ?

    Welcome Aboard !!!

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