Car Repair World

Low Power How To Troubleshoot Engine Low Power Issue Helpful Information Computer sensors operate within a prescribed specification, if these sensors become weak they can effect the engine power output without the computer detecting a problem, these half broken sensors need an data input scan tool to be detected and will cause havoc until replaced. Step by step guide on how to troubleshoot and repair an automotive engine that has low power output, this information pertains to combustion engines. Difficulty Scale: 5 of 10 Begin with the vehicle on level ground, engine off, in park with the emergency brake engaged. Step 1  - An engine's air filter is meant to pull impurities and can become clogged resulting in low air intake and low power.  Learn More Removing Air Filter Step 2  - If engine problems exist and the service or check engine light is on, use a code reader to retrieve the codes to make necessary repairs.  Learn More Check Engine Light...

Crankshaft Angle Sensor CKS CAS Working Of CAS/ CKS This article describes how an automotive crankshaft position sensor works. This information pertains to all vehicles except electric cars. A crankshaft position sensor (CKS) is used to reference crankshaft rotation as the engine is running while supplying feedback data to the main computer. This sensor is mounted near the crankshaft, flywheel or in the engine block depending on manufacturer. As the crankshaft spins it creates an electrical pulse pattern that changes with engine speed. This wavelength controls computer output circuits such as fuel injector pulse width and timing adjustments. The timer reluctor wheel is fastened to the crankshaft which is used by the sensor. Crankshaft Angle Sensor This sensor goes by different names depending on the manufacturer, crankshaft angle sensor, CKS sensor, crankshaft position sensor but performs the same function. When these sensors fail they can cause intermitted stalling, no s...

Oxygen Sensor O2 Working Of O2 Sensor in car Maintenance Oxygen sensors are made of reactive materials which limits their lifespan. Aside from mechanical failures such as shorted heating elements or physical damage, these sensors will usually last around 80,000 miles. If an engine has a mechanical failure such as a head gasket (coolant) or an issue that causes oil consumption (rings, valve guides), it will drastically shorten the sensor's life. When replacing your oxygen sensor, be sure to use a high-quality OEM (Original Equipment Manufacturer) part. Cheaper sensors aren't as accurate and don’t last as long as an OEM sensor will, and can cause performance issues as well as emissions problems. Vacuum leaks in the intake system, can give a false the sensor false readings and cause poor engine performance. History As fuel injection evolved, so did the oxygen sensor. Evolving from a one-wire sensor that grounded through the outer case, to a four-wire sensor that grou...

Mass Air Flow Sensor MAF Working Of Maf Sensor Helpful Information A mass air flow sensor can become inaccurate after large amounts of air (high mileage) has passed over the hot wire and must be  cleaned  before normal operation will return. These sensors are delicate and are prone to failure, fortunately replacement  is simple in most cases. Engine performance issues involving this sensor include, hesitation, low power and poor mileage. Step by step guide on how an automotive mass air flow sensor (MAF) works. Step 1  - The mass air flow sensor is designed to monitor the volume of air passing into the engine at any giving time (located in the intake tube connected to the throttle body) this information is then transmitted to the computer for calculations while helping adjust fuel injector input and ignition timing settings. Mass Air Flow Sensor (Appearance will vary.) Step 2  - All maf sensors include an electrical connector which is used to tr...

Knock Sensor Working Of Car Knock Sensor Helpful Information Higher engine compression ratios require the use of higher octane fuels to help control detonation, these vehicles usually will have a label near the fuel door or in the owner's manual recommending the proper fuel for the engine. Common Problems When an engine has an internal malfunction which is causing noise, the knock sensor will be activated and signal the computer to make adjustments, if the computer makes these changes without result, the MIL (check engine, service engine soon) light will illuminate. This internal engine noise must be repaired before normal knock sensor operation will resume. Step by step guide on how an automotive knock sensor works. Step 1  - A knock sensor, which is located somewhere on the engine block is designed to detect engine combustion knock. This sensor performs this duty by utilizing a temperature sensitive diaphragm which is surrounded by piezo ceramic. Once the sens...

Coolant Temperature Sensor CTS Working Procedure Of Vehicle CTS. Article describes how a engine coolant temperature sensor works. An coolant temperature sensor is located at the water outlet of the an internal combustion engine. Comprised of a housing filled with a composite which varies the resistance through the internal circuit (2 wire.) The car's computer or PCM uses this reading to make adjustments to the engine and transmission operating systems. Also described as an ECTS (electronic coolant temperature sensor) these sensors are easily tested using a voltmeter that can read the ohms of resistance at a particular engine temperature. This sensor also provides data to adjust the in-dash gauge to inform the driver on engine operating temperatures. In older models this operation was perform by a coolant sensor which was a one wire sensor that performed the gauge readings solely. Coolant Temperature Sensor ECTS When the engine is started, the computer uses sensor da...