Reduced gas mileage. A bad smell like rotten eggs coming from the exhaust. The check engine light comes on. You notice that your engine idles roughly. The car is suddenly hard to start. Are downstream O2 sensors important? Input from the downstream O2 sensor(s) is used to detect any problemsRead More →
Disable Sudden Motion Sensor on a Mac Laptop Type the following at the command line: sudo pmset –a sms 0. Hit return and enter your password. Should I cover my MacBook camera? Apple fans may hate us for this, but they are wrong. You must physically cover your Mac computer’sRead More →
Retroreflective – Very narrow beam optics designed to sense reflectors or refelective materials at long range. … When a retroreflective sensor or fiber is pointed or aimed at a reflector, the light beam is reflected back to the receiving lens or fiber. How does a photoelectric sensor works? A PhotoelectricRead More →
A narrowband sensor can measure only between approximately 14.0/15.0:1 air/fuel ratios to report a rich or lean condition, but a wideband is much more robust. … A wideband sensor can detect oxygen content in the exhaust that’s way below or way above the ideal air/fuel ratio of 14.7:1. Do IRead More →
Wideband/Air-Fuel sensors perform the same function as a regular O2 sensor, but they precisely measure the amount oxygen in the exhaust rather than just switching between rich (too much fuel, not enough oxygen) and lean (too much oxygen, not enough fuel). What is the benefit of using a wideband sensor?Read More →
A bad knock sensor may also not let the engine accelerate properly while driving on the highway, and cause the vehicle to lose fuel mileage. … Once the computer realizes the knock sensor is not working properly, your vehicle will most likely lose power. What does a knock sensor doRead More →
Without a valid speed signal from these sensors, the PCM will not be able to correctly control the shifting of gears within the transmission. This may cause the transmission to shift roughly or more quickly than normal. What are the symptoms of a bad transmission speed sensor? The following signsRead More →
As a camshaft position sensor starts having problems and weakens, the transmitted signal to the car’s computer weakens as well. This means the eventually the signal is so weak that it will not allow the car to start since there will be no spark from the ignition. What sensor wouldRead More →
Essentially, the DEF head monitors the DEF system. The DEF head communicates the quality (or concentration of urea) of the fluid is within spec. It relates that there is, in fact, DEF in the tank (quantity). This part also reports the temperature of the DEF is in a safe range.Read More →
Your Check Engine Light is Blinking. It’s Difficult to Get Your Vehicle to Start. Your Vehicle is Stalling and/or Backfiring. The Engine is Making Your Vehicle Vibrate. What will a bad crankshaft sensor cause? The most common symptom associated with a bad or failing crankshaft position sensor is difficulty startingRead More →