Hey Maic, As others have said, it's very strange that the voltage drop did not show on the negative to negative test, which should read 0.5V or less, but your actual voltage drop at the battery dropped to zero, which should be no less than about 9.6V during cranking. I have installed a hidden resistor in one of our test vehicles in the alternator charge line to show my apprentices how voltage drop is created. It works well to help them understand the process of a voltage drop test. Good video and diag - thanks for sharing. 😉
Hi Maic, grate video my car was just doing the same. I one Can figure out after I saw your video my car started and fix the ground issue . New follower Thanks.
Hey Maic, Thanks for putting this together. My 2008 x5 n62 has died while driving 2 times. Each time the dash warning lights came on and infotainment screen turned off. The first time it started on the next attempt. The second time, it didn't. I towed the car home and after charging the battery it starts. When I check the resistance(using the same points) as you I see 0.4 ohms. Does this mean my ground strap should be replaced? What are the alternative strap engine point that you recommend that I use ?
Hello Maic , I have a question . Why didn't you get voltage drop reading when you tested body ground to engine ground ? Isn't that the basic voltage drop test ? Ground to ground , power to power ? I hope my question makes sense.
Excellent question. Yes that should have shown the drop, but this was a partially open main ground, remember that Zeus was showing a good reading on the Pids as well.
@@MaicSalazarDiagnostics I beleve maybe you had a bad connection at the body ground which caused the inaccurate reading . Thank you Maic , and please don't take this as criticism, this is only what my brain is telling me to think . Great video
Good afternoon Maic, great video, I have a 2012 bmw x5m, car was running great. My air suspension compressor pump failed, making loud noises and the rear sagged all the way now. Beside that, car running great and everything is up to date. So yesterday I finally received the air compressor, I replaced the air compressor pump, car started great with no problem, the air shocks got filled up and the rear went back to its normal height. I used the car for about two hours, did a couple of stops, the car started with no problem all the times, finally got home last night, parked the car. This morning when I went to start the car, it wouldn’t. No start, no crank, just a click noise. And when I checked for any dtc, only code came back was BMW fault code 2D7C, Never seen that code before, I tried gm to google it but couldn’t find any that match it exactly, can you please help me out? Maybe I didn’t something wrong when installing the compressor? it was a very tight to take and put back the new one. Thank you so much in advance!
It was a very bad idea to put that jumper cable. Doing so causes current to run through the engine and it can magnetize the crank or camshafts. When that happens the cam and crank sensors become very unpredictable.
@@MaicSalazarDiagnosticsThe main ground strap at the starter failed, so when you put on that jumper cable to see it that was it, every time you crank the starter you are running current from starter up through the block and out through the jumper cable. Not joking at all, the magnetizing happens mainly when someone puts the ground strap from the head to body with nothing from starter to body.
Hello boss ihave problem with 2016 audi a1 fualtcode c104b29 and trying to get any related data from Google and other sources but I can't find can you have any idea please
Hey Maic,
As others have said, it's very strange that the voltage drop did not show on the negative to negative test, which should read 0.5V or less, but your actual voltage drop at the battery dropped to zero, which should be no less than about 9.6V during cranking.
I have installed a hidden resistor in one of our test vehicles in the alternator charge line to show my apprentices how voltage drop is created. It works well to help them understand the process of a voltage drop test.
Good video and diag - thanks for sharing. 😉
Hi Maic, grate video my car was just doing the same. I one Can figure out after I saw your video my car started and fix the ground issue . New follower
Thanks.
An excellent walk-through, Maic!
Excellent Maic. Regards pal.
Hey Maic,
Thanks for putting this together.
My 2008 x5 n62 has died while driving 2 times. Each time the dash warning lights came on and infotainment screen turned off.
The first time it started on the next attempt. The second time, it didn't. I towed the car home and after charging the battery it starts.
When I check the resistance(using the same points) as you I see 0.4 ohms. Does this mean my ground strap should be replaced?
What are the alternative strap engine point that you recommend that I use ?
Well Explained
Good morning sir from India 🇮🇳
Good morning my friend
Hello Maic , I have a question . Why didn't you get voltage drop reading when you tested body ground to engine ground ? Isn't that the basic voltage drop test ? Ground to ground , power to power ? I hope my question makes sense.
Excellent question. Yes that should have shown the drop, but this was a partially open main ground, remember that Zeus was showing a good reading on the Pids as well.
@@MaicSalazarDiagnostics I beleve maybe you had a bad connection at the body ground which caused the inaccurate reading . Thank you Maic , and please don't take this as criticism, this is only what my brain is telling me to think . Great video
Nice job
Please make more videos
I hope this is my problem 🙏🤞
How did you get your zues refresh rate to not show jumping lines while recording
All is done by the iPhone, as long as I am not too close it uses a different camera
Do you know of a mechanic the Los Angeles area who can fix the same problem I have? One place wanted $500 just to do the diagnostic.
That's not a bad price for 2 hours of diag
How much was the part ?
Good afternoon Maic, great video, I have a 2012 bmw x5m, car was running great. My air suspension compressor pump failed, making loud noises and the rear sagged all the way now. Beside that, car running great and everything is up to date. So yesterday I finally received the air compressor, I replaced the air compressor pump, car started great with no problem, the air shocks got filled up and the rear went back to its normal height. I used the car for about two hours, did a couple of stops, the car started with no problem all the times, finally got home last night, parked the car. This morning when I went to start the car, it wouldn’t. No start, no crank, just a click noise. And when I checked for any dtc, only code came back was BMW fault code 2D7C, Never seen that code before, I tried gm to google it but couldn’t find any that match it exactly, can you please help me out? Maybe I didn’t something wrong when installing the compressor? it was a very tight to take and put back the new one. Thank you so much in advance!
HI I will need more information in order to help you. Email me at maic@maicsalazardiagnostics.com
It was a very bad idea to put that jumper cable. Doing so causes current to run through the engine and it can magnetize the crank or camshafts. When that happens the cam and crank sensors become very unpredictable.
You are joking right? What do you think the main ground strap is doing? Where do you think is attached?
@@MaicSalazarDiagnosticsThe main ground strap at the starter failed, so when you put on that jumper cable to see it that was it, every time you crank the starter you are running current from starter up through the block and out through the jumper cable. Not joking at all, the magnetizing happens mainly when someone puts the ground strap from the head to body with nothing from starter to body.
Hello boss ihave problem with 2016 audi a1 fualtcode c104b29 and trying to get any related data from Google and other sources but I can't find can you have any idea please
I did this and now the car starter engages for a split second then that's it.
Havcve you try to spin the engine by hand to make sure that there is no mechanical issues?
If engine is good that sounds like a bad starter