Problem Reports
Cadillac DeVille DTS
Report: Misfire Due to Failed Ignition Coil
Cadillac DeVille DTS Problem
Model Years Affected: 2001, 2002, 2003, 2004, 2005
Average Mileage: 106,533 mi (82,347 mi - 140,000 mi)
An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.
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Visitor, 2004 Cadillac DeVille DTS, 130,352 mi
My vehicle was doing fine. I started it up one morning, and the check egine light came on,along with misfire and vibration. the diagnosis is misfire in # 4 cylinder. I am parking it until it can be repaired.
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Visitor, 2003 Cadillac DeVille DTS, 90,000 mi
Car idles rough and check engine light is on and sometimes flashes. Worse when engine warms up but idles rough even when cold. Diagnostic check shows P0300 and 303 codes which indicates a misfiring in the #3 cylinder. I haven't troubleshot it any further. I don't want to drive it as it could do damage to the catylitic converter when the check engine light flashes.
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Visitor, 2002 Cadillac DeVille DTS, 82,347 mi
misfire on one clyder
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Visitor, 2003 Cadillac DeVille DTS, 98,000 mi
Replaced front and back coil and plugs
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Visitor, 2004 Cadillac DeVille DTS, 98,500 mi
Problem started around 98000 mi. Green Chevy/Cadillac diagnosed and repaired the problem quickly
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