![]() However, if the phaser has failed, it might not be capable of locking in place. The cam phaser should lock in position when the engine is at its base idle. You might notice trouble accelerating, a rough idle or trouble getting all of the power it normally exhibits. With either of these problems, the engine is going to exhibit performance issues as a result. If the cam phaser isn’t operating correctly, the timing is going to be retarded or advanced. ![]() The valve timing must be optimized to ensure the engine runs as it was intended. By reading the diagnostic trouble codes with your professional scanner, you should be able to narrow down the problem better. While this positioning problem could be the result of something else, it’s commonly an issue with the cam phaser. If the module gets a poor reading from the sensors, it’s going to turn on the Check Engine Light. With the help of the powertrain control module (PCM), the camshaft positioning is always monitored through sensors. The car computer lets you know whenever something is wrong with the system. Here is a more detailed list of the signs of a bad or failing cam phaser to look for: 1. You may also notice that the engine is noisier than usual, indicating that you need to inspect and fix it immediately. Note the mileage and consider if the timing chain needs to be changed.The most common symptoms of a bad cam phaser are lower engine performance and a check engine light on your dashboard. This is also something to keep in mind if you’re shopping for pre-owned vehicles. While replacing a worn timing chain isn’t easy nor cheap, it’s still less expensive than replacing an engine due to a broken timing chain. Is It Worth Fixing A Timing Chain?Īssuming you want to keep driving your vehicle, then yes. As such, it’s a good idea to have a timing chain replaced between 80,000-120,000 miles. That said, wear and tear will happen - faster in cars with high mileage. Timing chains are highly durable and are designed to last your vehicle’s lifetime. If these parts don’t work correctly, your timing chain can come loose and free to slap against other engine components. The timing chain is lubricated by engine oil, so regular oil changes promote its longevity.Ī defective chain tensioner or chain guide can also damage the timing chain. However, accelerated wear can happen when the vehicle doesn’t stick to scheduled oil changes. Timing belts are rubber, located outside the engine, are quieter and cheaper to manufacture but require more frequent replacement than a timing chain.Timing chains are metal, located inside the engine (so they can be lubricated with engine oil), and generally last longer, saving cost in the long run.Timing chains and timing belts have the same function - they connect the engine’s camshaft and crankshafts. Is A Timing Chain The Same As A Timing Belt? And it’s important to note that some cars use a timing belt instead of a timing chain. The timing chain may also drive components like the water pump and balance shaft in certain engines. This allows your intake and exhaust valves (operated by the camshaft) to be timed correctly with the pistons (operated by the crankshaft) - resulting in proper engine combustion. The timing chain synchronizes your vehicle’s crankshaft and camshaft(s). Here are answers to some timing chain questions: 1. Small metal pieces in your engine oil when drained, or found in the oil filter, could mean your timing chain needs a replacement. Metal shavings in your oil: Tiny metal bits can shear off a worn timing chain. Your engine may stutter, feel sluggish, experience misfires, and hesitate on acceleration.Įngine won’t run: If your timing chain is very far gone, your engine may not run as the timing is completely off. ![]() Valves don’t open and close at the correct time, resulting in incomplete combustion. Poor engine performance: A stretched timing chain will cause the camshaft and crankshaft to be out of sync. Damage to related components like chain guides or a chain tensioner will also produce noises like whining or buzzing. It’ll trigger your dashboard check engine light and likely store a timing-related trouble code, like P0011 or P0012 - depending on which timing component prompted the warning.Įngine noises: A loose or damaged timing chain often makes a rattling or whirring sound. ![]() What Are The Symptoms Of A Defective Timing Chain?Ī faulty timing chain will cause your vehicle to exhibit one or more symptoms.Īn illuminated check engine light: If your timing isn’t running right, your engine computer will detect this problem at some point.
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