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What are the reasons for the increasingly slow acceleration of the Cadillac ATSL?

3 Answers
VanJosephine
07/29/25 10:04am
Reasons for the increasingly slow acceleration of the Cadillac ATSL: 1. Poor ignition of spark plugs: Spark plugs are also a common source of faults. If the spark plugs ignite poorly, it may lead to acceleration issues. 2. Excessive carbon deposits in the engine: It is necessary to remove carbon deposits from the engine. For every 30,000 kilometers driven, carbon cleaning in the engine should be performed once. Extended information: 1. The main locations of carbon deposits include: combustion chamber, intake valves and surrounding areas, three-way catalytic converter, and lubrication system. 2. Severe consequences of carbon deposits: issues such as increased fuel consumption, difficulty starting, poor acceleration, engine shaking, and excessive exhaust emissions may occur. Spark plugs are also a common source of faults. If the spark plugs ignite poorly, it may lead to acceleration issues.
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HarrisonFitz
08/13/25 12:46pm
I've been driving a Cadillac ATSL for many years, and recently the acceleration has noticeably slowed down. It feels like the car lacks power when driving. Carbon buildup in the engine is likely the main cause—frequent city traffic jams lead to incomplete fuel combustion, and the accumulated carbon deposits in the cylinders reduce compression efficiency. Old spark plugs can also cause trouble, as delayed ignition directly affects acceleration response. I've checked the fuel system: a clogged fuel filter, dirty fuel injectors, or insufficient fuel pump pressure can all lead to unstable fuel supply and sluggish acceleration. If the air filter is dirty, reduced airflow lowers combustion efficiency, which is another potential factor for slow acceleration. Transmission issues shouldn't be ignored either—for example, aged transmission fluid can cause rough shifting, especially during hard acceleration. Regular maintenance is key, including cleaning carbon deposits and replacing the oil filter. If slow acceleration is accompanied by unusual noises, be sure to get a comprehensive inspection at a professional shop to avoid safety hazards.
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Lorenzo
10/07/25 2:49am
My Cadillac ATSL's acceleration has become increasingly sluggish. As a seasoned car enthusiast, I suspect the transmission system might be the culprit. If automatic transmission fluid isn't changed regularly, it can deteriorate, causing clutch slippage and delayed gear shifts, making the car feel like it's struggling through mud. Insufficient engine fuel supply is another major factor; a faulty fuel pressure regulator or fuel line leak can significantly weaken power output. An aging ignition system, with widened spark plug gaps or damaged coil insulation, leads to noticeable power loss during acceleration. I often recommend checking the oxygen sensor—if it's faulty and misleads the ECU in controlling the air-fuel ratio, the car's performance will suffer. Don’t overlook tire wear or low tire pressure either, as poor ground grip naturally makes acceleration harder. Driving habits matter too: constantly flooring the throttle without easing off can cause the system to learn incorrect patterns, so periodically resetting the ECU helps. Timely maintenance of fuel and drivetrain components can restore that old thrill.
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