Dumb question
#11
Ford Truck Lover
yes ground is ground. Period. The reason they tell you not to is because dead batteries can vent hydrogen, an explosive gas. By hooking up to the dead battery, IF YOU'VE ALREADY CONNECTED TO THE JUMPING VEHICLE, it can spark igniting the hydrogen and exploding the battery.
#12
Senior Member
Ground IS NOT ground. As has been mentioned a few times already, read the manual. There's a sensor involved nowadays and it's nothing to do with fumes. I swear, the cleanest thing in most vehicles is the owners manual.
#13
Ford Truck Lover
I am not going to fight with you. The entire chassis of a vehicle is technically the ground terminal. The only reason they tell you not to attach to the battery is the proximity of "sparking" that can occur. But believe what you want.
The following users liked this post:
jd50i (10-18-2017)
#14
Senior Member
It always helps me to remember the cable connecting sequence by memorizing the phrase "dead red to red hot" as the first connection. Then, in my mind the next connection of "hot black to dead black" follows without a logical struggle. And yes, I subscribe to "dead black" as being a ground on the chassis far removed from the negative post of the dead battery.
#15
Senior Member
As mentioned by Garnet on the newer Trucks including your 2.7 The battery and charging system is controlled by the BCM using sensor,s mounted to the battery, connecting a load directly to the battery can confuse the BCM and charging system. So yes if you are jumping from an older truck a ground is a ground but the 2.7 is a whole other basket of worms. It will not harm any thing if done properly, read Da Book
#16
There is nothing in the owners manual about the 2.7 being some special ground.if you hook the cable terminal to terminal it will jump start the car its almost crazy reading some of the things being written.
the pic is right out of my manual
Last edited by jordan15screw; 10-17-2017 at 08:38 PM.
#17
Senior Member
The 2.7 with the auto stop start feature and the factory AGM battery is a special case as will all the newer trucks equipped with auto stop start and AGM battery be.
#18
#19
As already mentioned, lithium chemistry batteries (LiIon, LiPoly, LiFePO4, etc.) are special.
#20
Ford Truck Lover
Note the warning! LOL This is what I meant. It has nothing to do with sensors, etc.