Voltage Drop Test on a Starter Unit

[@techs8660]

The best voltage drop video so far. Thanks!

[@lmuhlstadt]

This is the sexiest guy I've seen do a starter voltage drop test! Nice Job, Robert Vachunek.

[@krzychoish]

My 1998 dodge ram was the same exact things, super video. saved me a lot of money thanks a lot

[@nicholaslam5880]

When he was testing for voltage drop at the ground, was the key set to the on position since a voltage drop test only works under a load?

[@hughkoontz2166]

That was my question too. Need to load the circuit to show a drop in voltage ⚡

[@superdave103harley]

excellent voltage drop demonstration on the ground side!!

[@Alex35c]

One lead on battery positive, other on starter control side. Disable fuel by pulling relay/fuses for fuel pump so vehicle wont start. Check battery voltage, must be above 12.6 and do a load test to before doing voltage drop. Crank engine and note how many volts the battery drops. Any reading below 10.6 volts and you have excessive draw.

[@scrappydogfinance8434]

How he did a voltage drop test without turning the start switch?

[@juanjohnism]

I thought the system had to be under a load. you did not try to start the engine when you were checking for voltage drop?

[@robertvachunek8713]

you are correct however the loss was at the terminal and had total battery voltage loss.

[@PaulR387]

Great real world video, ignore the know all comments! Good job Robert

[@GarrettGiuffre-w3p]

This guy knows how to party

[@dannyl8955]

have a 1995 pontiac trans am 5.7l. the car cranks but the voltage gauge drops to low after start. when accelerate, the voltage gauge goes to normal. when sitting at idle goes back to low voltage. what is the problem?

[@scrappydogfinance8434]

Ohm continuity from engine to Negative terminal would have clearly indicated an open circuit on the ground cable as well...

[@manospapanos6954]

Is this video a prank ? This is a first, new Physics, measuring a voltage on the same cable, from ground to the minus side of the battery or on the same pole. If it is a prank video it is amusing thinking of all those that will believe it. Its a good one also him saying that the numerals on the multimeter are jumping around so that they will not burn an image on the screen. Hey, make sure that you do not hold the same reading for too long or its going to be burned there for ever.

[@Mazel_Tov_888]

how is it possible to get voltage going neg to grn. don't you need pos to get voltage.

[@automedic9781]

Ric777888 Bad ground. If it’s not ground out, you won’t be dropping voltage like you’re supposed to

[@frankdavidson9675]

i had this tbl on my wives car just clicked i jumperd the neg post to eng gd started right up the gd cable was about to fall off the chasis ( loose bolt) i am 88 i have had this happen 3 times diff vech over the years-------any time you have battery tbl verfi chassis gd .

[@prasanthmoolethodi3152]

Great tutorial thanks macha

[@jaimegenovajr3257]

Thank you for the video

[@CoyoteCarChannel]

Did this guy just get out of AA? Lmao

[@doglegjake6788]

i really appreciate great videos like this its a free education to me ,, thanks for sharing !!!!!!

[@michaeljohn8905]

Thank you sir !

[@xavierhuffman1406]

That's a handsome man.

[@CoyoteCarChannel]

Great video though Thankyou, just had to get a laugh.

[@johns9926]

why not just use a "load Pro" eliminating the ignition turn on, pls take the sun glasses off unless it's medical, Been a porsche/mercedes mechanic ( factory certified ) for 20 yrs.

[@motorhead6763]

JOHN S poor guy working on euro trash like me....keeps us busy

[@Ottonic6]

Not everyone has a Load Pro, but even I have a DVOM...

[@mylajames9299]

John S ,why does it have to be medical before you are okay with him wearing sunglasses . Maybe his eyes are sensitive to bright lights or maybe he just likes wearing them for no reason at all.The fact that it bothers you even after he provided a very helpful video proves you just came here to find something to pick apart while letting everyone know YOU have a load Pto. not everyone has a load pro mr goodwrench , he dont have to take off his sunglasses just because you say so Is your old lady a load pro

[@CoyoteCarChannel]

Ray Charles lol

[@REDMAN298]

His seeing eye dog had the day of. bwahaha Un-professional to wear shades while working on a vehicle. jmo

[@autoparts321]

YO, Why would the meter be reading +12Volts between the Negative Battery Terminal and the Engine Block??? WTF? The Block is not wired to the Positive side of the battery... it would be reading 0 volts right? This is weird, all I can think is 12volts positive potential is going through load devices somewhere on the car and to the chassis ground. The block must be grounded to the chassis elsewhere besides the battery negative terminal (which I believe is the way most cars are setup). However most devices are switched through relays and ignition switch. So what Load device on a car is always wired hot to the postive side of the battery? The starter windings are disconnected from +12volts until the Solenoid coil is pulled in. The Solenoid coil does not get Power until the key is turned to start position. Car stereo clock/memory and maybe ECU??? I just think this is one of the weirdest approaches to testing battery cables and battery terminal connections. I ALSO AGREE WITH OTHER COMMENTS, THIS IS NOT A STARTER LOAD TEST. Load testing starter for Voltage Drop usually done by turning the starter and measuring the voltage.

[@Ottonic6]

ComputerUser321...Cause there was no ground to battery,.. the battery positive wires go to the starter and alternator which are grounded to the engine block which eventually is grounded to the battery negative. And since the ground wasn't complete to the battery negative, connecting the DVOM to the block and battery neg. he completed the circuit therefore reading 12.6v

[@o0phuoctai0o]

You’re right. ComputerUser321 I’m sure that remote starter computer have to be wired to battery + and ground to frame, then battery - all the time. Most of new cars have security system built in which is constantly load your battery with small current.

[@CoyoteCarChannel]

Robocop hahaha

[@MrUnix-cu9yy]

Thank you, that was very informative.