Crankshaft
Hidden within your engine, the crankshaft is essential to every drive you make. You won’t see it when you lift the bonnet, but your car wouldn’t run without it.
Although it’s designed for durability, the crankshaft still needs proper care. So, while the crankshaft doesn’t need constant attention, skipping oil changes or postponing your yearly service can cause strain and may eventually result in costly repairs.
In this guide, we’ll give Macclesfield drivers a simple overview of what the crankshaft and crankshaft position sensor do, why they matter, and how servicing at Links Automotive protects your engine and your wallet.
What is the Crankshaft?
The crankshaft is an indispensable component located in the lower portion of your engine block. This precision-engineered part operates within the protective environment of your engine’s crankcase, with the oil pan beneath it containing essential lubricating oil.
When examining a crankshaft closely, you’ll immediately notice its remarkable complexity. Look at the diagram to see how many different elements make up this impressive component! Engineered to withstand immense forces, every aspect serves a specific purpose.
To minimise vibration during operation, the crankshaft incorporates counterweights. It contains internal oil passages (known as oilways) allowing oil to circulate through the component itself, protecting it from the tremendous stresses experienced during normal driving conditions around Macclesfield, Wilmslow, and beyond.
This internal lubrication system demonstrates precisely why premium-quality oil and scheduled servicing aren’t optional extras; they’re absolute necessities. Without adequate lubrication reaching these vital areas, metal-to-metal contact creates a destructive chain reaction: friction increases, temperatures rise dramatically, metal surfaces can become scored, and complete engine failure may follow.
What Role Does a Crankshaft Play?
In simple terms, the crankshaft’s job is to turn the pistons’ up-and-down motion into rotation. This turning motion transfers power through your clutch and gearbox before ultimately reaching your wheels. But that’s not its only responsibility.
The crankshaft also drives your camshaft through a timing chain, belt, or gear system, ensuring your valves open and close with precise timing. Additionally, it powers numerous auxiliary systems via belt-driven pulleys, including your alternator, water pump, and air conditioning compressor.
What Could Go Wrong?
With proper maintenance according to manufacturer recommendations, your crankshaft should remain trouble-free throughout your vehicle’s service life. Physical crankshaft damage is uncommon in well-maintained engines, though when it does occur, the consequences are typically severe, often requiring complete engine rebuilding or replacement.
In contemporary vehicles, issues with the crankshaft position sensor arise more frequently than problems with the crankshaft itself. This critical electronic component provides essential timing data that your Engine Control Unit (ECU) relies upon to operate. When this sensor fails, your engine may not function properly, as the ECU lacks the information needed to coordinate ignition timing and fuel delivery.
Crankshaft Position Sensor
The crankshaft position sensor is a vital part of your engine. Mounted to your engine block, this sensor continuously monitors your crankshaft’s rotation, transmitting data about its precise position and rotational velocity to your vehicle’s computer system.
Modern engines depend on this data to calculate when to trigger spark plugs and activate fuel injectors within each cylinder. Without accurate position readings, the ECU essentially operates blindfolded, unable to synchronise these critical events.
When this sensor malfunctions, symptoms can quickly become noticeable. Your engine may stall unexpectedly or refuse to start altogether since the ECU cannot establish the crankshaft’s position. This makes the crankshaft position sensor an essential component in your car’s engine.
Don’t Miss These Crankshaft or Position Sensor Warnings
Be vigilant for these key warning signs that might indicate crankshaft or sensor problems:
- Hard starting – During ignition, the ECU needs accurate crankshaft data. If it doesn’t get a clear signal, the engine may crank but fail to fire. When your engine’s running, the system can estimate the crankshaft’s position using previous data, so problems may not be evident. The issue crops up later, after you’ve turned off your vehicle and attempted to restart it.
- Engine misfires or poor acceleration – The ECU relies on the crankshaft sensor to manage spark timing and fuel delivery. A failing sensor can cause rough idle, poor acceleration, or noticeable power loss.
- Check engine warning light – An irregular signal or complete sensor failure will often trigger the dashboard warning light. You should never ignore this warning light as it can represent many problems.
- Temperature-Related Failures – High temperatures affect the crankshaft sensor, sometimes resulting in intermittent issues where the engine stalls and only restarts after cooling down.
- Strange engine noises or vibration – If the crankshaft itself is damaged, you might hear clunking sounds, knocking, or feel unusual vibrations.
Prompt recognition of these symptoms can prevent problems from worsening. While identifying these warning signs can be challenging for non-specialists, acting quickly when they appear dramatically improves your chances of avoiding serious engine damage. Call us on 01625 402262 if you have any concerns for your vehicle.
Tips That Will Keep Your Crankshaft In Peak Condition
Implement these three golden rules to ensure your crankshaft remains in optimal condition throughout your vehicle’s lifespan:
- Quality Oil Selection:
- Our technicians at Links Automotive select only manufacturer-approved oil with the exact specifications your engine requires
- Premium synthetic oil provides superior protection for your crankshaft and bearings, particularly during cold Cheshire mornings when most engine wear occurs
- Using incorrect oil specifications risks accelerated component deterioration with potentially devastating consequences for your engine
- Regular Oil Changes:
- At Links Automotive, we strictly follow manufacturer guidelines regarding oil change intervals, preventing premature wear and extending component life
- Fresh oil provides multiple critical benefits: it delivers essential lubrication to moving parts, carries away harmful contaminants that cause accelerated wear, forms a protective barrier against corrosion, and maintains optimal operating temperatures by dissipating heat effectively
- Professional Servicing:
- Book regular services with Links Automotive, sticking to your manufacturer’s recommended schedule
- Our comprehensive inspections allow early detection of developing problems before they escalate into major failures
These straightforward maintenance steps will significantly reduce your risk of unexpected breakdowns and costly engine repairs.
Your Trusted Partner in Car Maintenance
At Links Automotive, we understand that timely maintenance prevents costly repairs; it’s much better than simply addressing problems after they’ve developed. As back-to-back winners of Top Garage 2023 & 2024, our proactive approach has built our sterling reputation with motorists across Macclesfield, Wilmslow, Alderley Edge, Knutsford, Prestbury, and Congleton.
Our commitment to excellence is reflected in our {{average-rating}} star Google rating earned from {{review-count}} delighted clients.
When you choose Links Automotive, you’re guaranteed:
- Outstanding value with transparent, no-surprise pricing
- Access to specialist diagnostic equipment and tools
- Complete peace of mind with our comprehensive 12-month parts and labour guarantee on all work completed
- Guaranteed use of manufacturer-specified or premium OEM replacement components
(OEM stands for Original Equipment Manufacturer. When it comes to vehicle parts, this means the parts are made by the same company that produced the original parts for the vehicle manufacturer)
Don’t gamble with your engine’s health. Ring us today on 01625 402262 to discuss any crankshaft concerns, crankshaft position sensor issues or to arrange your next service appointment. Our experienced team is ready to keep you moving!
