Search the Community

For some big cars, it is quite hard to do parallel parking, especially to gauge the front of the car. I am thinking whether to either, 1) Drill four holes to the front kit and install another "rear" sensors with "Beep beep" sound to the front (cheaper). 2) Install front camera and connect to a LCD monitor for viewing and gauging (more costly). Any other better suggestion?? Thank you...

Any shop can diagnose the sensors problem?

Hi Friends,My Camry Engine check light is on,my mechanis said most likely is one of the O2 sensors faults,is O2 sensors 'Tear & wear" items.??Anyone replace before.?What is the costs like.??Thanks guys.

Reminds me of NASA spending millions to develop a pen that could be used in space, while the Russians used pencils! http://www.straitstimes.com/news/singapore/transport/story/height-sensors-go-bukit-timah-road-warn-drivers-tall-vehicles-2014092 Height sensors go up in Bukit Timah Road to warn drivers of tall vehicles By Christopher Tan SINGAPORE - Sensors that warn drivers of tall vehicles that they cannot pass under an overhead structure will be tested along Upper Bukit Timah. When the system senses an approaching vehicle that is too tall, it will start flashing a visual warning to alert the driver that his vehicle may hit the structure. The Land Transport Authority (LTA), which set up the system, said it will try this out for six months and gauge its effectiveness before rolling it out to more locations. The LTA said incidents involving vehicles hitting overhead structures are relatively low but added that a damaged overhead road structure can pose grave danger to all road users.

Hello, My reverse sensors has gone kaput and I bought a set online as they are very competitively priced. 1) Where can I go to install them now? Any recommendations? 2) Labor fees about how much? So I don't get cheated. Thank you.

[extract] One undesirable thing that many of us car owners hate is the slamming of our car doors. Sometimes, they are slammed so hard that we could almost hear the car cry. This could make people go nuts and at times we just have to tell everyone in the car to gently close the door. Automotive technologies nowadays have evolved so fast that new and innovative systems see daylight every day to make our lives easier. BMW

[extract] Driving can be a stressful thing for most people. For example, getting caught in a peak hour traffic jam. And at times, driving can be boring and distracting too. So, what can be done about this? It seems that Ford is working on a biometric driver stress detector that determines the driver

[extract] Every tyre on the market today is a compromise. If you want something that sticks to the ground in warm and dry conditions, there are many tyres for you to choose but don

Guys, any idea where I can get this complete set?

Anyone can recommend a car accessories shop to buy a simple 2 or 3 point reverse sensor? Probably a reliable brand too. I was introduce to this brand Eye Max parking sensor i wonder if is good? Thanks in advance.

Whose car here has no reverse sensors and camera? Are they really useful? Cause I feel it fitting it to my car as mine has no reverse sensor but not sure if its necessary.

What do you think of this idea. All cars much come with forward sensors. If you are keeping too close to the car in front of you, it will sound. Then you know you should slow down and keep a bigger distance.

hi guys, does anyone knows where a rain and light sensors can be installed?

I am wondering how often should I replace the oxygen sensors. I known that as the oxygen sensors aged, fuel consumption will deteriorate. What is a good replacement interval assuming that there is no equipment available to check the oxygen sensors.

jus got my reverse sensors installed this morning at "Specialist Audio" in Alexandra Village. total 4 sensors along the strip. picture taken from my pda phone, sorry for the lousy picture quality. Many Thanks to skodasales aka jason.

Has anyone fitted concealed reverse sensors (heard there was a strip kind mounted inside the bumper) on their ride ? Are they as good as or better than the usual flush mounted sensors ? Anyone know which shop does concealed sensors and how much it costs ? Thanks

I know that the Subaru Legacy and Outback uses the Bosch wideband sensors. Most of the VW use them like the Golf GTI and most of the 1.8T powered ones. Any idea if the lambda sensor can be bought from local stockists?

Guys, thinking of having these install on my ride. One too many bumps on the bumper prompting me to do so ... as much as I don't want to ... any issues on this ... I check with the service engineer at Audi ... Votex reverse sensors cost $450 including installation ... after market cost $120 for 2 eyes and $180 for 4 eyes ... any issues? any recommendations?

Can anyone enlighten me for vehicles with 2 sensors on th cat area( before n after ), is it a must to remove the sensor after the cat converter? Thanks in advance!

Afternoon guys =) anyone here with tilt and motion sensors installed in their cars or know where to install it?? thankyou for sharing any information

Have any of you guys fixed parking sensor on your aveo? if yes, pls kindly advise me the pricing. Poh seng quoted me $100 which i tot is pretty costly. thanks

hi folks, a frd of mine wanna install reverse sensors in her Corolla G9. any bros/sis here got experience of where to install and price ? thanks linus

OK below is the breakdown of the vacuum/sensors and valves found in most engines today. If you found a way to fool anyone of them for better performance, contact Toyota, GM or Mercedes-Benz. Black-clad field operatives on MD500 Defender helicopters will fly to your house. EEC - Evaporative Emmissions Controls To reduce the hydrocarbon emissions, evaporated fuel from the fuel tank is routed through the charcoal cannister to the intake manifold for combustion in the cylinders. This is located behind the Air Intake, and can be replaced with an oil catch can. EGR - Exhaust Gas Recirculation System To lower the maximum combustion, a portion of the exhaust gases are recirculated through the EGR vlave to the intake manifold. The EGR valve has a vacuum modulator filter, this should be checked for clogging and cleaned with an air line or replaced if clogged. Most also have a Bimetal Vacuuming Switching valve which requires checking. Oxygen Sensor (lamda) Senses oxygen levels in spent charged fuel to adjust fueling mixture as necessary. Oxygen sensors are heated in order to work. ECU - Engine Control Unit Contains a built in onboard diagnostic (OBD) system, troubles with the 'engine signal network' are detected and the engine warning light will illuminate on the dash board. A ECU check is then necessary. TPS - Throttle position sensor Tranlates the position of the throttle plate into an electrical signal, also has a sensor for open and idle positions. AFM - Air Flow Meter The AFM contains a spring loaded measuring plate, connected to a potentiometer which controls its signal to the ECU. This allows the intake air volume to be considered to control fuel injector duration and ignition advance. Older cars are usually fitted with AFM. Vacuum Sensor (also known as Manifold Absolute Pressure MAP) Converts a vacuum signal from the intake manifold to electrical signal to ECU. Used to determine basic injection duration and basic ignition advance angle. Newer cars of today are fitted with these and these vehicles also use a IATS 'intake air temperature sensor' mounted in the intake airstream. CTS - Coolant Temperature Sensor Works like the IATS, a variable resistor. VSV - Vacuum Solenoid Valves Operated by ECU, when electricaly energised the valve opens a vacuum passage allowing the engine vacuum to operate a component. ISC - Idle Speed Control Responds to engine conditions (coolant temps, aircon, etc) allows more through the bypass of the throttle valve to raise idleto keep ancillaries running. Not necessary to describe are - Main Relay, Circuit Opening Relay, Fuel Injector Solenoid Resistor, Fuel Pump Resistor, Fuel Pump Relay. So, thats a busy little system ensuring you are running the correct fuel.

Most cars nowadays come bundled with Reverse Sensors, however, i see an increasing number of such cars with dented bumpers and boots, usually a long vertical dent, like it hit a pole. Do these devices actually work then??

All About Lambda Sensors (http://www.picotech.com/auto/lambda_sensor.html) The exhaust gas oxygen sensor (EGO or O2), or lambda sensor, is the key sensor in the engine fuel control feedback loop. The computer uses the O2 sensor's input to balance the fuel mixture, leaning the mixture when the sensor reads rich and richening the mixture when the sensor reads lean. Lambda sensors produces a voltage signal that recognises the amount of unburned oxygen in the exhaust. An oxygen sensor is essentially a battery that generates its own voltage. When hot (at least 250 degrees c.), the zirconium dioxide element in the sensor's tip produces a voltage that varies according to the amount of oxygen in the exhaust compared to the ambient oxygen level in the outside air. The greater the difference, the higher the sensor's output voltage. Sensor output ranges from 0.2 Volts (lean) to 0.8 Volts (rich). A perfectly balanced or "stoichiometric" fuel mixture of 14.7 parts of air to 1 part of fuel gives an average reading of around 0.45 Volts. The lambda sensor's output voltage doesn't remain constant, however. It flip-flops back and forth from rich to lean. Every time the voltage reverses itself and goes from high to low or vice versa, it's called a "cross count." A good O2 sensor on a injection system should fluctuate from rich to lean about 1 per second. If the number of cross counts is lower than this, it tells you the O2 sensor is getting sluggish and needs to be replaced. Most lambda sensors will cycle from rich to lean in about 50 to 100 milliseconds, and from lean to rich in 75 to 150 milliseconds. This is referred to as the "transition" time. If the O2 sensor is taking significantly longer to reverse readings, this too is an indication that it is getting sluggish and may need to be replaced. Observing the sensor's waveform on a scope is a good way to see whether or not it is slowing down with age. If the sensor becomes sluggish, it can create hesitation problems during sudden acceleration. Heated Oxygen Sensors To reduce the warm-up time of the Lambda sensor, an internal heating element may be used. Heated O2 sensors can reach an operating temperature of as high as 500 degrees C in as little as eight seconds! Shorter warm-up time means the system can go into closed loop fuel control sooner, which reduces emissions and improves fuel economy. Heating the sensor also means it can be located further downstream from the exhaust manifold. Titania Oxygen Sensors Some vehicles have a slightly different type of sensor that has a titania element rather than zirconium. Titania O2 sensors are fitted to some Vauxhalls. The operating principle of a titania lambda sensor is entirely different from that of a zirconium lambda sensor. A titania lambda sensor works like a coolant sensor. It changes resistance as the air/fuel ratio goes from rich to lean. But instead of a gradual change, it switches very quickly from low resistance (less than 1000 Ohms) when the mixture is rich to high resistance (over 20,000 Phms) when the mixture is lean. The engine computer supplies a base reference voltage of approximately one volt to the titania sensor, and then reads the voltage flowing through the sensor to monitor the air/fuel ratio. When the fuel mixture is rich, the resistance in a titania oxygen sensor is low and the sensor's voltage signal is high. When the fuel mixture is lean, resistance shoots up and the voltage signal drops. Derivability Symptoms A lambda sensor's normal life span is 30,000 to 50,000 miles. But the sensor may fail prematurely if it becomes clogged with carbon, or is contaminated by lead from leaded petrol or silicone from an antifreeze leak or from silicone sealer. As the sensor ages, it becomes sluggish. Eventually it produces an unchanging signal or no signal at all. When this happens, the Check Engine Light may come on, and the engine may experience derivability problems caused by an overly rich fuel condition. Poor fuel economy, elevated CO and HC emissions, poor idle, and/or hesitation during acceleration are typical complaints. If the average voltage from the lambda sensor is running high (more than 0.50V), it indicates a rich condition, possibly due to a bad MAP, MAF or Air Flow sensor or leaky injector. If the average voltage reading is running low (less than 0.45V), the mixture is running lean possibly due to a vacuum leak or because the sensor itself is bad. If the lambda sensor continually reads high (rich), it will cause the engine computer to lean out the fuel mixture in an attempt to compensate for the rich reading. This can cause lean misfire, hesitation, stumbling, poor idle and high hydrocarbon emissions (from misfiring). If the lambda sensor continually reads low (lean), it will cause the engine computer to richen the fuel mixture. Injector pulse width will increase causing fuel consumption and carbon monoxide emissions to go up. Constant rich fuel mixture can also cause the catalytic converter to overheat and it may be damaged. If the lambda sensor's output is sluggish and does not change (low cross counts & long transition times), the engine computer will not be able to maintain a properly balanced fuel mixture. The engine may run too rich or too lean, depending on the operating conditions. This, in turn, may cause derivability problems such as misfiring, surging, poor idle, and high emissions. If a heated sensor has a faulty heating circuit or element, the sensor can cool off at idle causing the system to go into open loop. This usually results in a fixed, rich fuel mixture that will increase emissions. Sometimes an apparent lambda sensor problem is not really a faulty sensor. An air leak in the intake or exhaust manifold or even a fouled spark plug, for example, will cause the lambda sensor to give a false lean indication. The sensor reacts only to the presence or absence of oxygen in the exhaust. It has no way of knowing where the extra oxygen came from. So keep that in mind when diagnosing oxygen sensor problems. The lambda sensor is also grounded through the exhaust manifold. If rust and corrosion of the manifold gaskets and bolts is creating resistance, it may affect the sensor's output. To rule out a bad ground, use a digital volt meter to check for a voltage drop between the sensor shell and the engine block. More than 0.1v can cause a problem. Lambda Sensor Checks A good lambda sensor should produce a fluctuating signal that changes quickly in response to changes in the oxygen level in the exhaust. The best way to check the sensor is to observe the sensor's output on a waveform scope or oscilloscope. A scope will display not only the sensor's minimum and maximum voltage readings, and average voltage reading, but also its back and forth voltage oscillations from rich to lean. Sensor output can also be read directly with a 10K ohm impedance digital voltmeter, or some code readers. CAUTION! Never use an ohmmeter on a zirconium O2 sensor in an attempt to check the sensor because doing so can damage it. And never jump or ground the sensor's leads. The lambda sensor's voltage reading should have a minimum reading of 200 millivolts (0.20 V) and a maximum reading of 800 millivolts (0.80 V). If the sensor reading is averaging low (under 400 millivolts) or high (over 500 millivolts), the engine may be running rich or lean because of some other problem. If the sensor's output voltage never gets higher than .60v and never drops to less than 0.30 V, it needs to be replaced. The same is true if the sensor's output is sluggish or doesn't change. To check the sensor's response to changing oxygen levels in the exhaust, first create an artificially lean condition by pulling a large vacuum line. When extra air is introduced into the engine, the sensor's voltage output should drop to 0.2 V. To check the sensor's rich response artificially richen the mixture by, if possible, clamping the return fuel line momentarily. This will force more fuel through the injectors and should cause the O2 sensor's voltage to increase to 0.8 V. If the sensor's output fails to respond to the changes you've created in the oxygen level in the exhaust, it's time for a new sensor. Zirconium sensors can also be bench tested by heating the tip with a propane torch while monitoring the sensor's voltage output with a digital voltmeter. Connect the positive voltmeter lead to the signal wire (normally black) coming out of the O2 sensor and the negative voltmeter lead to the sensor's outer shell. Then heat the tip of the sensor with the propane torch. The tip should be hot enough to turn cherry red, and the flame must enter the opening into the sensor tip. If you get a voltmeter reading above 600 millivolts (0.6 Volts), and the reading quickly changes as you move the flame back and forth over the tip, the sensor is okay. A low reading or one that is slow to change means the sensor needs to be replaced. Removing Lambda Sensors Removing the sensor when the engine is cold will lessen the odds of stripping the threads in the exhaust manifold. Penetrating oil may be needed to loosen rusted threads. Once the sensor has been removed, the threads in the manifold should be cleaned before the new sensor is installed. Apply graphite grease to the sensor threads unless the threads are precoated. Replacing Lambda Sensors Everybody knows that spark plugs have to be replaced periodically to maintain peak engine performance, but many people don't realise the same goes for oxygen sensors. As long the lambda sensor is working properly, there's no reason to replace it. But after 30,000 to 50,000 miles of being constantly bathed in hot exhaust gas, a build up of deposits on the sensor tip can make it sluggish. If there's enough clinker on the sensor tip, the sensor may produce little or no voltage at all. This produces a false "lean" signal that makes the computer think the engine needs more fuel, which it doesn't but gets anyway. This creates a rich fuel condition that kills fuel economy and sends carbon monoxide and hydrocarbon emissions soaring. The engine may also experience additional derivability problems such as surging or hesitation. The same kind of thing can happen if the lambda sensor is contaminated by deposits from sources other than normal combustion. It only takes a couple of tankfull's of leaded petrol to ruin an lambda sensor (and catalytic converter). A lead contaminated oxygen sensor will typically have light rust coloured deposits on the tip. Another source of sensor contamination can come from silicone poisoning. If somebody used the wrong kind of silicon sealer to seal up a leaky rocker box cover or manifold gasket, silicone can find its way into the engine and foul the sensor. Silicates, which are used as corrosion inhibitors in antifreeze, can also cause the same kind of poisoning. Sources here might include a leaky head gasket or racks in the combustion chamber. Silicone deposits on the sensor tip will have a shiny white to grainy light gray appearance. If the engine has an oil consumption problem due to worn valve stem seals, piston rings and/or cylinders, a build up of heavy black to dark brown oily deposits on the sensor tip can make it sluggish. If the deposits have a black powdery consistency, the fuel mixture is running rich. This may be due to the sensor already having failed, or it might be due to something else such as a leaky injector or a computer problem, or constant short journeys where the cold start system doesn't have time to come off (open loop) known as housewives car. When ever you suspect a lambda sensor problem, the first thing you should do is scan for any codes that would implicate the sensor circuit. A code by itself doesn't necessarily mean the sensor is bad, however. It might be a wiring problem or something else. So always follow through with the diagnostic check to diagnose what's wrong before you replace anything. If you don't find any codes, that doesn't necessarily mean the lambda sensor is okay. In many instances, a sluggish sensor may not be bad enough to record a fault code but will still be causing an emissions or derivability problem.