Extremely useful video. I’m struggling to find a sender for a very old car that has the resistance running the other way from this one, now I’ve seen this video I can open up the one I have and modify it. Many thanks.
The pressure sender uses variable resistance to move a “Matching” gauge. Some senders (sensor) uses a sealed piston pushing against a spring. Adjusting the spring is calibration. The gauge uses B+ and the variable ground signal to push the needle and then pull it to show actual pressure. This gauge works the same as fuel and temp. The ground signal can be 0-90 ohms or 0-240 ohms or backwards 90-0 ohms depending on how gauge is wired. There are several videos showing fuel gauge operation. They become more accurate & expensive if a pressure cell or strain gauge is used by still provides a variable ground. A “MAP” sensor is a strain gauge and uses 5 Vdc, ground and return or signal wire. So 3 wires are used. ASE Master tech, 78.
I was interested in seeing the guts of this sending unit.. my guage reads high .I remeber that .on some of the marine sending units a 5 to 10 ohm resistor is placed on the terminal where the wire goes to the gauge in between the gauge and sensor... since I have a problem that is the oppposite of this... I wanted to see if I could put a resistor in parallel with the 2 terminal on the sendor in order to bring the reading down on the gauge.. and make it more like the mechanical gauge reading which measures fine.
I am curious if I remove the smaller blade from sensor which gives out low oil message via switch would the larger blade/terminal still work to read live oil pressure ?
Yes the pressure still be read. The terminal which give the low pressure is for shutdown system of the engine once the pressure drop to zero. So if you remove that terminal it will not shutdown.
@@MakCyberTutorialChannel That should solve my problem on my 03 Carerra as I bought an aftermarket sensor and I believe resistance/pressure readings are bias to low end resulting in constant low oil pressure red light beep in dashboard everytime my car is idling at operating temp. I will try it out and see if computer does not send faulty sensor error. Thanks for the advice!
@@MakCyberTutorialChannel So that may be true on a bench but when installed on a 911 porsche with the small connector removed from oil pressure sensor the dash sends oil fault indicator in orange and does not allow measurement of the resistance/pressure and needle stays at zero. I am thinking of connecting it to an older dummy sensor, disassemble, move wiper so it does not hit switch so it sees voltage. I accidentally bought aftermarket sensor, lesson learning, thoughts?
Extremely useful video. I’m struggling to find a sender for a very old car that has the resistance running the other way from this one, now I’ve seen this video I can open up the one I have and modify it. Many thanks.
Thanks for the video! I've spent a lot of time trying to find videos on how these work. There's a lot more to them than I thought.
Very well explained, Superb.
The pressure sender uses variable resistance to move a “Matching” gauge. Some senders (sensor) uses a sealed piston pushing against a spring. Adjusting the spring is calibration.
The gauge uses B+ and the variable ground signal to push the needle and then pull it to show actual pressure. This gauge works the same as fuel and temp. The ground signal can be 0-90 ohms or 0-240 ohms or backwards 90-0 ohms depending on how gauge is wired. There are several videos showing fuel gauge operation. They become more accurate & expensive if a pressure cell or strain gauge is used by still provides a variable ground. A “MAP” sensor is a strain gauge and uses 5 Vdc, ground and return or signal wire. So 3 wires are used.
ASE Master tech, 78.
Great explained !
One word . *Perfect*
Nice Job with clear demonstration. Thank You So Much
very nice teaching brother without any voice
Thank you bro
Good Video!! Thanks for explaining--------- Now i understand the working cq testing the sending unit
Thanks for watching my video
Been wondering how these work. Thanks for clarifying! 🙂
Excellent! Thanks for sharing, we appreciate all the hard work!
salamat po sa pag share keep vlogging po
Maraming salamat po sa pagbisita
Nice brother good explanation
Very informative..Thanks for sharing your knowledge.
Thank you for visiting
Wow wow by using it right now I slove my problem
nice. new friend here send my full support din sayo. keep safe
Maraming salamat. Keep connected
wow! great, very informative. new friend here, following you sending my full support. keep safe alway@ God bless!
Thank you for your support. Me too
Great video thanks for sharing
thank you
Super great explanation
Great vedio
Thank you
Thanks for sharing your knowledge sir.
thanks po
Great video bro
Thank you so much for your time.
I was interested in seeing the guts of this sending unit.. my guage reads high .I remeber that .on some of the marine sending units a 5 to 10 ohm resistor is placed on the terminal where the wire goes to the gauge in between the gauge and sensor... since I have a problem that is the oppposite of this... I wanted to see if I could put a resistor in parallel with the 2 terminal on the sendor in order to bring the reading down on the gauge.. and make it more like the mechanical gauge reading which measures fine.
Valuable vedio.thank you
Thank you
Good information content
Thank you
Thank you for this information
Great work,,but further how does it shut down the system,specially in home portable generator
Portable generator having oil pressure sensor using same system
very informative po
Salamat sa pagdalaw
Good Video!
Thank you
I am curious if I remove the smaller blade from sensor which gives out low oil message via switch would the larger blade/terminal still work to read live oil pressure ?
Yes the pressure still be read. The terminal which give the low pressure is for shutdown system of the engine once the pressure drop to zero. So if you remove that terminal it will not shutdown.
@@MakCyberTutorialChannel That should solve my problem on my 03 Carerra as I bought an aftermarket sensor and I believe resistance/pressure readings are bias to low end resulting in constant low oil pressure red light beep in dashboard everytime my car is idling at operating temp. I will try it out and see if computer does not send faulty sensor error. Thanks for the advice!
@@MakCyberTutorialChannel So that may be true on a bench but when installed on a 911 porsche with the small connector removed from oil pressure sensor the dash sends oil fault indicator in orange and does not allow measurement of the resistance/pressure and needle stays at zero. I am thinking of connecting it to an older dummy sensor, disassemble, move wiper so it does not hit switch so it sees voltage. I accidentally bought aftermarket sensor, lesson learning, thoughts?
Excelente video
thank you
I would like to know if the two terminals work with positive, or the two terminals with negative
It has body ground supply to both terminal. Thanks for watching
What is the exact resistance value to expect when testing between ground (G) terminal and the body?
Letter G is connected to pressure gauge that sending value to the gauge & the letter WK is for indicator light same like a switch.
Thanks
thank you
Is pressure switch same as sensor or sender unit?
yes sir
TUTORIAL SENSOR VDO TEMPERATURA TIENES?
You can watch this amigo.
th-cam.com/video/vucxrnhz6f8/w-d-xo.html
❤good❤
💜💜💜💜💜
Connect with C and WK , multimeter show 12V?So which terminal is P(+) and which one is N(-)
The both terminal is negative supply from the sensor body ground to the engine
Highligh 👉pa support dn po
done din po
I have a oil pressure sending unit no one has one wire on it it's an aftermarket gauge
If i not wrong i think that is a mechanical oil pressure gauge
@@MakCyberTutorialChannel now they're electric it's a hot rod thank you anyways bud
terminal indicator light is negative(-ve) or positive( -ve) ?
Negative supply from oil sender switch
Thanks
Thanks
Thank you