This tool is bloody good I hope you did get your money back out of it Dan as a DIYer I’ve used it only a few times - with success people keep comparing it to the power probe the reality is there’re two different tools my power probe four will show on the screen the condition of the fuel injectors whilst the motor is running Each injector is 300 bucks so you’ve just paid for the power probe by changing one injector instead of all eight it’s a completely different beast you need both of them to be honest…..!!!!! The LoadPro is absolutely essential The fact you can test the condition of the wiring in the harness is unreal And when I do find problems nine times out of 10 it’s a connector somewhere that’s corroded Excellent Dan…..!!!! You’re a very smart man…!!!
@@carguy1312 how much did you pay for it? do you feel it was worth every dime? or could have got something far cheaper and made a few tweaks with resistors?
@@sollykhan2385 was $60 on Amazon - $85 with extra probes I thought were worth it because I didn’t already have… it sure is nice with the non-pointed probe.
The tips on the LP bother me because they have standard lead tips. I would use this more if the leads were banana plug so I could attach my pin connectors. This would free up my hands to press switches. In all the videos illustrating this tool I always see to people working together. One fumbling the leads and one pressing the switches
Ghost voltage is not voltmeter open circuit voltage when the leads are out of circuit. What was shown in the video as described as ghost voltage is just called open circuit voltage, which is not really ghosting anything. Ghost voltage is a relatively stable, expected and displayed value on a very high impedance DMM. The meter is reading a voltage value that makes perfect sense for the system being tested but is really just ghosting the reading through a high impedance coupling mechanism (usually capacitive), but not as high by an order of magnitude as compared to the DMM input impedance, which with some high end DMMs is extremely high (greater than 10 Mega Ohms). What follows is a description of how you would see ghost voltage on a DMM: 1) Reading AC volts in a residential AC load center: If you use a high quality DMM for AC work, like Fluke 289 TRMS Industrial Logging Multimeter you could be looking at the output of a 120VAC branch circuit breaker to see if it is off, only to read 113VAC on the DMM display when the breaker has clearly tripped and the handle is in the off (tripped) position. The circuit is indeed de-energized and what you are reading is AC ghost voltage being coupled into the DMM on AC volts, and is very common for high impedance DMMs. The voltage reading looks familiar but is really a ghost, an electrical artifact. Just like a ghost looks like a living person, but in reality, there is nothing real. A ghost reading is a lie. It is so common a problem in AC industrial work that with the Fluke 289 there is an AC Volts special mode called Low Z AC Volts that reduces the voltmeter input impedance to around 3.2k Ohms, which will eliminate ghosting. If you look in the Fluke 289 operators manual for this mode it talks specifically about ghost voltage. 2) Reading DC volts in an automotive power feed circuit fuse block bolt in fuse near the battery positive terminal: When measuring DC Volts you can also have ghost voltage in an automotive application where you measure the output of a large current fuse relative to battery negative and it reads +12VDC. But, when a load on the circuit the fuse is powering is turned on (draws current to operate) it fails to operate. What has happened is there is corrosion on this high current bolt down fuse where by it is acting like a very high impedance voltage source, but still at least 10x times less than input impedance of the DMM. To combat this it would also be helpful if the Fluke 289 had a Low Z DC Volts range, but since the Fluke 289 is designed for industrial AC work it does not. But, there is an easy fix, all you have to do is lower the input impedance of the DMM on DC Volts with a resistor at the meter across the voltmeter inputs. For power feeds on a 12V application 1000 Ohm should work well, and you will not be fooled by DC ghost voltage again, even on Halloween. Going back in time, if we measure AC Volts with a Simpson 260-8 Analog VOM as opposed to a DMM, you will not be fooled by ghost voltage for residential AC work. The Simpson, when set up to read 120VAC will have an input impedance of about 600 Kilo Ohms as compared to the input impedance of some high end DMMs like the Fluke 289 at 10 Mega Ohms or higher.
Great tool,I bought it many years ago,but still in the box, very stupid, any way question when you checking the coil side on the relay base, did you turned the key to on position? Please answer me,thank you from ontario ca
great video but I don't understood when testing the fuel pump circuit, did you pressed the bottom while cranking the engine? please explain thank you, cheers, saludos amigo
I've watched many times because I was also confused. I think that the master technician was trying to compare the voltmeter values of actual voltage drop (from 12.02v to 10.56V without pressing the Loadpro load button) while Mr. Sullivan was cranking the engine. Then the technician measured the voltage again which was around 12.00v and Mr. Sullivan cranked the engine and the technician press the load button to see the voltage drop which was 10.44v. Since comparing the value of voltage drops of 10.56v and 10.44v, there are not much differences in the voltage drop, and therefore, they determined that the fuel pump wiring system (wires,fuse & relay) is ok. So I determined that the fuel pump is bad and need to be replaced.
Porque no entiendo completamente el funcionamiento del circuito interno de la herramienta. Es posible que tenga algun resistor con un valor muy exacto que se pone en serie con el voltimetro al presionar el interruptor y lo que se esta midiendo es la caida de voltaje, pero no puedo saber cual es el valor del resistor, puede ser 1, 10 u 100 ohmios. De todas formas voy a experimentar en mi laboratorio para entender mejor y luego compro el Load Pro, porque aunque no me convence me inquieta.
son muy simples matematicas las que se aplican... para saber cuantos Ohms hay en el circuito, simplemente mides los Voltios y los divides por el consumo de Amps para saber la cantidad de Ohms... despues que sabes eso, mides la caida de Voltaje y vuelves a sacar la respuesta de Ohms perdidos por el cable que esta dañado... facil
This tool is bloody good I hope you did get your money back out of it Dan
as a DIYer I’ve used it only a few times - with success
people keep comparing it to the power probe the reality is there’re two different tools my power probe four will show on the screen the condition of the fuel injectors whilst the motor is running
Each injector is 300 bucks so you’ve just paid for the power probe by changing one injector instead of all eight
it’s a completely different beast you need both of them to be honest…..!!!!!
The LoadPro is absolutely essential
The fact you can test the condition of the wiring in the harness is unreal
And when I do find problems nine times out of 10 it’s a connector somewhere that’s corroded
Excellent Dan…..!!!! You’re a very smart man…!!!
But what’s happening inside the positive “load” probe? Is there a lightbulb? A big resistor? What is providing load?
need to get the tool and back engineer it to resolve the mystery i guess, there has to be something of that nature, surely ?
@@sollykhan2385 I bought one - just tested it and it seems to work - just like to know how it’s being accomplished is all.
@@carguy1312 how much did you pay for it? do you feel it was worth every dime? or could have got something far cheaper and made a few tweaks with resistors?
@@sollykhan2385 was $60 on Amazon - $85 with extra probes I thought were worth it because I didn’t already have… it sure is nice with the non-pointed probe.
The tips on the LP bother me because they have standard lead tips. I would use this more if the leads were banana plug so I could attach my pin connectors. This would free up my hands to press switches.
In all the videos illustrating this tool I always see to people working together. One fumbling the leads and one pressing the switches
Sadly with every 'innovation' there are more problems to overcome,as the old saying goes there will always be more questions than answers.
Ghost voltage is not voltmeter open circuit voltage when the leads are out of circuit. What was shown in the video as described as ghost voltage is just called open circuit voltage, which is not really ghosting anything.
Ghost voltage is a relatively stable, expected and displayed value on a very high impedance DMM. The meter is reading a voltage value that makes perfect sense for the system being tested but is really just ghosting the reading through a high impedance coupling mechanism (usually capacitive), but not as high by an order of magnitude as compared to the DMM input impedance, which with some high end DMMs is extremely high (greater than 10 Mega Ohms).
What follows is a description of how you would see ghost voltage on a DMM:
1) Reading AC volts in a residential AC load center: If you use a high quality DMM for AC work, like Fluke 289 TRMS Industrial Logging Multimeter you could be looking at the output of a 120VAC branch circuit breaker to see if it is off, only to read 113VAC on the DMM display when the breaker has clearly tripped and the handle is in the off (tripped) position. The circuit is indeed de-energized and what you are reading is AC ghost voltage being coupled into the DMM on AC volts, and is very common for high impedance DMMs.
The voltage reading looks familiar but is really a ghost, an electrical artifact. Just like a ghost looks like a living person, but in reality, there is nothing real. A ghost reading is a lie.
It is so common a problem in AC industrial work that with the Fluke 289 there is an AC Volts special mode called Low Z AC Volts that reduces the voltmeter input impedance to around 3.2k Ohms, which will eliminate ghosting. If you look in the Fluke 289 operators manual for this mode it talks specifically about ghost voltage.
2) Reading DC volts in an automotive power feed circuit fuse block bolt in fuse near the battery positive terminal: When measuring DC Volts you can also have ghost voltage in an automotive application where you measure the output of a large current fuse relative to battery negative and it reads +12VDC. But, when a load on the circuit the fuse is powering is turned on (draws current to operate) it fails to operate.
What has happened is there is corrosion on this high current bolt down fuse where by it is acting like a very high impedance voltage source, but still at least 10x times less than input impedance of the DMM. To combat this it would also be helpful if the Fluke 289 had a Low Z DC Volts range, but since the Fluke 289 is designed for industrial AC work it does not. But, there is an easy fix, all you have to do is lower the input impedance of the DMM on DC Volts with a resistor at the meter across the voltmeter inputs. For power feeds on a 12V application 1000 Ohm should work well, and you will not be fooled by DC ghost voltage again, even on Halloween.
Going back in time, if we measure AC Volts with a Simpson 260-8 Analog VOM as opposed to a DMM, you will not be fooled by ghost voltage for residential AC work. The Simpson, when set up to read 120VAC will have an input impedance of about 600 Kilo Ohms as compared to the input impedance of some high end DMMs like the Fluke 289 at 10 Mega Ohms or higher.
Very good tool you just press the bottom and see the voltage drop.very good
thumbs up for Jamie's Cryin during fuel pump test
Great tool,I bought it many years ago,but still in the box, very stupid, any way question when you checking the coil side on the relay base, did you turned the key to on position? Please answer me,thank you from ontario ca
hi this is frederick i will to paticipate in your
lesson how do i go about if
i need to understand more and thanks
what about using this on computer circuits? could this cause damage to the computer ?
Does this work on any voltage as being a forklift tech i often use 48 volts ?
great video but I don't understood when testing the fuel pump circuit, did you pressed the bottom while cranking the engine? please explain thank you, cheers, saludos amigo
I've watched many times because I was also confused. I think that the master technician was trying to compare the voltmeter values of actual voltage drop (from 12.02v to 10.56V without pressing the Loadpro load button) while Mr. Sullivan was cranking the engine. Then the technician measured the voltage again which was around 12.00v and Mr. Sullivan cranked the engine and the technician press the load button to see the voltage drop which was 10.44v. Since comparing the value of voltage drops of 10.56v and 10.44v, there are not much differences in the voltage drop, and therefore, they determined that the fuel pump wiring system (wires,fuse & relay) is ok. So I determined that the fuel pump is bad and need to be replaced.
Porque no?
dont know if your testing the ground to the emc
Porque no entiendo completamente el funcionamiento del circuito interno de la herramienta. Es posible que tenga algun resistor con un valor muy exacto que se pone en serie con el voltimetro al presionar el interruptor y lo que se esta midiendo es la caida de voltaje, pero no puedo saber cual es el valor del resistor, puede ser 1, 10 u 100 ohmios. De todas formas voy a experimentar en mi laboratorio para entender mejor y luego compro el Load Pro, porque aunque no me convence me inquieta.
son muy simples matematicas las que se aplican... para saber cuantos Ohms hay en el circuito, simplemente mides los Voltios y los divides por el consumo de Amps para saber la cantidad de Ohms... despues que sabes eso, mides la caida de Voltaje y vuelves a sacar la respuesta de Ohms perdidos por el cable que esta dañado... facil
con solo unir los cables y apretar el botom sale que la resistecia que se usa es de 25 ohms
No me convence.