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CTS 03
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1,765 Posts
Discussion Starter · #1 ·
What do think it is? Can I swap the coil packs to see if the problem moves? I did a search, not much help. Plugs have 50k on them.
 

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2003 CTS "Ebony Maria" 2005 Cadillac STS "Grace"
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6,414 Posts
the 3 pack coil pack can be swapped even though they are marked for 1-3-5 and 2-4-6 on them...only problem is they may not fit like that because of plug location...i would take the coil pack off, and check the spring for cylinder 1...there was another member MaxFloss who had somewhat of a similar problem and the spring was pretty much broken inside there...
 

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CTS 03
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1,765 Posts
Discussion Starter · #3 ·
The problem was the rubber boot on the coil pack. I think the oil in there made it degrade and it was causing the spark to arch to ground. I replaced the Coil Pack( $105 at Auto Zone) and it fixed the problem. Thanks for the helpanyway.
 

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2003 CTS "Ebony Maria" 2005 Cadillac STS "Grace"
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6,414 Posts
thats good news, glad you got it fixed quickly...
 
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