Voltage drop through floor when cranking
Thread Starter
Joined: Jul 2010
Posts: 1,768
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From: Nashville / Tampa
Voltage drop through floor when cranking I generally try to bump older semi-relevant threads when possible but there are potentially lots of variables here and that approach could get confusing.
Anyway, when I crank the car to start the voltage drops like a rock then it's 50/50 that it'll come back then start. Battery is new, checked and charged. Once the car gets going the alternator keeps things above 14v, but getting it started is the hard part.
Here is a video of what is going on, voltage is top right gauge. Is there a general sort of thing that usually causes this? It's been going on for a while but this is the first chance I've had to try to fix it.
Thanks for any thoughts on the matter
Anyway, when I crank the car to start the voltage drops like a rock then it's 50/50 that it'll come back then start. Battery is new, checked and charged. Once the car gets going the alternator keeps things above 14v, but getting it started is the hard part.
Here is a video of what is going on, voltage is top right gauge. Is there a general sort of thing that usually causes this? It's been going on for a while but this is the first chance I've had to try to fix it.
Thanks for any thoughts on the matter
