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I actually enjoy working on newer vehicles. However it is harder for the general public to diagnose and trouble shoot there own vehicles without the right equipment or an education in this field.
Newer vehicles are more efficient than older designs C8-)
I think Jay Leno said it best when it comes to fixing cars. On old cars, it takes you 5 minutes to find the problem and 2 hours to fix it. On new cars, it takes you 2 hours to find the problem, and 5 minutes to fix it.
I actually love working on 96 and newer cars better then any other years.
I find OBD-1 cars to be a pain some times.That’s why i ask about the sencers what they do. I work on cars last 15 years. Older ones. I put my baby (92 fulsize Blazer in the lake in fefruary. Dads idea go ice fishing. That was bad day. Took the two weeks to get it out and 30k later. Morow of that story is DO NOT GO ON ICE.
Anyway got a 98 grand prix with 3100 changing head gaskets and intake gaskets well redoing the top of the engine. All the sencers i had to unhook. Made me think why and how? Before is a gessing game what sencers and throw bunch of money at it. I took ericthecarguys advice from his videos and youtoob and learn how to chec stuff. with the ohm meter found out that my aic is no good.
I love older cars they are simple. The newer one just more and more electronic and one sencer could make car run like crap. Then stressing if car will pass or fail emission test. It’s nice to know now how to check and fix that. So i’m pressy happy.
Some new stuff is cool, but well, quite honestly, phuque that shizit! It’s retarded. All to prevent “Global Warming”.
Let me tell you something, January 2011 where I’m at saw 60 below 0 Fahrenhite with an aditional 30 degree colder windchill. weather.com stated that felt like 100 below! This was the coldest place on the entire PLANET for 6 hours.
Global Warming? Smog? Are you phuqueing serious?! Say ‘hi’ to Santa Claus for me. And tell the tooth fairy that she owes me $0.50.
Sunlight Sensor:
Used for Climate Control(No Idea on what it really does)Interior Temp Sensor
Used for Climate Control(No Idea on what it really does)Rain Sensor
Used for Auto Wipers, Detects the amount of rain on windshield and activates the wipers.DWS/TPMS
Deflation Warning System/Tire Pressure Monitoring System, It works off the VSS to determine the Speed of each wheel and any wheel not rotating at the correct rate(due to a flat tire) will trigger this warning which will light up on your dash cluster with this light.
Quoted From 3SheetsDiesel:
I think Jay Leno said it best when it comes to fixing cars. On old cars, it takes you 5 minutes to find the problem and 2 hours to fix it. On new cars, it takes you 2 hours to find the problem, and 5 minutes to fix it.
not sure ok for sensors but all the stuff is compressed in the hood no place to work
Whoever mentioned the interior temperature sensor: Sounds to me like another Damn wiring head ache for Tech’s to figure out. Found on a luxury vehicle. It detects that the Vehicle’s Interior Temp is 70 Degrees F, when the driver specifically requested 75, so it kicks on the heater by itself. Then, his wife is having a Hot-Flash, so it kicks on the A/C for the passenger’s temp.
All these sensors are what make our cars reliable. They weren’t handing out 100k Warranties on cars in 1960 were they? You were lucky if your car saw 120k on the odometer. Most of the sensors keep the fuel going into the cylinders at the optimal amounts and as close to a “lean” condition as the other sensors will allow. The knock sensor for example will tell the computer that it is running the engine too lean because the engine will start to “ping” if the engine is running too lean, or if the ignition advance is set to aggressively. It also allows you to get 44mpg out of a Chevy Cruze instead of 25mpg out of a Chevy Chevette. Those old cars with Carburetors and simple electronic ignition systems just can’t make those minute adjustments hundreds of times a second. It’s like playing video games on an Atari 2600 vs one of todays top end systems. Sure, you could take the cartridge out and blow on it, maybe clean the contacts and drive your little pixelated version of a tank around shooting your giant square block at the other guy and maybe you have to completely disassemble your Xbox to fix the RED RING OF DEATH. But when you get into THAT tank, it’s an M1A2 Abrahms and it’s taking down the Taliban @60mph across the desert just as if you were actually there. So, what’s the price you’d rather pay?
Oh, and VSS Vehicle Speed Sensor…used to measure the rotation of the output shaft on the transmission. A tech can plug in the parameters of the particular tire you put on your vehicle so that your speedometer reads correctly..had to replace the gear in the transmission back in the day or learn how much of a difference there is the in speed you are going vs the speed you are seeing on the gauge.
Another nice function of the VSS is that the computer uses it to control your cruise control, on some cars it is used in conjuction with your ABS system and it is also used in that nice little display that tells you how many miles until you are out of fuel and what your fuel economy is.
O2 sensors have an upstream and downstream sensor. The upstream sensor reads the amount of unburned fuel after the engine combusts it in the combustion cycle and expels it in the exhaust cycle. The Downstream sensor tells the computer how efficient the Catalytic converter is burning off the excess fuel. The important sensor is the upstream sensor ( Bank 1 Sensor 1 or Bank 2 Sensor 1 ). That tells the computer how efficient the motor is at converting fuel into power. The Downstream sensors primary job is to help regulate Fuel trim, but it’s mostly there to make sure that you aren’t expelling to many emissions related gasses to the atmosphere.
Terms to know in regards to O2 sensors on Scanners. When you are looking at “live data” meaning the information the computer sees from the O2 sensors while the engine is running. You want to see your sensors as close to “0” as possible. Single digit readings are okay, but if you are constantly in double digits, then you need to investigate why.
LTFT and STFT are terms seen on scanners with live data. This means “Long Term Fuel Trim” or “Short Term Fuel Trim”. I’m just beginning to learn all the ins and outs of these numbers, but again…”0″ is ideal
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