If your vehicle is experiencing excessive shaking and vibrations, this points to a serious problem. There could be multiple reasons for your engine vibration, some of which may signal inefficiencies or the impending failure of one or more of your engine's critical components. Knowing how to diagnose and, in some cases, repair engine knocking can help to save you time and money by avoiding costly mechanic's fees.
Things You'll Need
- OBD II scanner
- OBD I translator
- Replacement sensors
- Socket wrench set
- Torque wrench
- Wrench set
- Car ramps
- Floor jack
- Jack stands
Plug in your OBD II (on-board diagnostics) scanner to your OBD II port, which is usually located near the steering column. Many models have the OBD II port on the left side of the under-console of the driver's side dash, near the door. If your car was manufactured prior to the 1994 production year, you may need to use an OBD I translator, which plugs into your OBD II scanner.
Turn on your scanner, which may require you to turn your car to the "Acc" position, and read the codes that appear. Use a manual that comes with the scanner to translate the codes.
Replace any sensors that come up in the OBD II scan. Multiple sensors work together in order to help fire and time the ignition process for the engine's combustion. The knock sensor particularly helps to sense the engine vibration patterns and regulate the timing in accordance, and may account for excessive engine vibration if the sensor is failed. You may need to remove several components and engine parts in order to access specific sensors, depending on your make, model and engine design. You may also need to raise your vehicle on car ramps in order to access the underside of the engine to remove and replace certain sensors.
Replace engine and transmission mounts if needed. This process can vary from vehicle to vehicle, however it usually involves using one or two floor jacks to support the weight of the engine while unbolting one or more engine mounts. Each engine mount also has its own insulator and rubber stopper materials, which are critical to the engine mount's functioning. Failed engine mounts do not necessarily lead to damaging other engine components and is not a fix critical to the proper functioning of your car engine.
Inspect your harmonic balancer, which is connected to the crankshaft via a drive belt and serves to reduce and absorb some of the vibrations caused by the crankshaft itself. Loosen and remove the drive belt by turning the belt tensioner bolt. Unbolt the harmonic balancer with a torque wrench and inspect the insulator component, which should be in good shape. Replace the harmonic balancer if the insulator is cracked or showing signs of wear and tear, or if it is missing.
- Photo Credit Vintage Car Engine image by itsallgood from Fotolia.com
What Is a Knock Sensor?
If you feel an unusual knocking in your car, especially at high speeds, the problem may be a faulty knock sensor. This...
How to Correct a Pinging Sound From a Car's Engine
In a few cases, you can effectively diagnose a car problem just by opening up your ears. A distinct "pinging" sound coming...
How to Stop Engine Knocking With Lucas Oil Stabilizer
How to stop engine knocking in just a few easy simple steps. You, yes you can do this at home. Although this...
How to Replace the Knock Sensor
Automakers begin using computerized engine controls starting in the 1980s. Modern computerized engines utilize a spark knock sensor to detect detonation. Detonation...
How to Test a GM Knock Sensor
The knock sensor on your GM engine is designed to sense detonation in the engine that causes a knocking noise from an...
How to Troubleshoot an Engine Noise
You are driving along, no worries in the world, and suddenly there is a strange noise coming from under the hood. You...
How to Locate the Knock Sensors on an Engine
The knock sensor is a device located on an engine that senses irregular vibrations. "Pinging," or engine knock, is a result of...
How to Fix a Knock Sensor
All fuel-injected vehicles use at least one knock sensor. The knock sensor monitors excess vibrations in the engine then signals the computer....
How to Quiet Engine Rod Noise
Engine rod noise is often referred to as "rod knock," a hard, thumping knock that comes from your engine rod knocking against...
How to Repair a Chevy 2.4L Knock Sensor
The knock sensor on a Chevy 2.4-liter engine is located near the rear of the engine, under the exhaust manifold. It is...
How to Stop a Knock in a Mower Engine
The last thing you want to hear when you set out to mow your lawn is knocking from your engine. A number...
How to Fix a Knocking Rod
A knocking engine rod is a sign of distress from the inner workings of your vehicle. There are several reasons why an...
What Additives Will Stop the Knock in My Engine?
"Engine knocking" is a term used to refer to a metallic sound in an engine. It may be a hollow knocking or...
Causes of Engine Noise
No car owner wants to hear the engine start to emit unusual sounds. Not only annoying to the owner, these noises can...