one downside of
alternators is they have to have voltage to make voltage. If the battery
drops too low
they dont put out, and the vehicle wont run.
If your asking will it crank with a jump, again it depends on how dead it
is. If the connections
are corrodedit just makes it worse.
There are lots of unanswered questions in your request.
YMM is always needed, Year, Make and Model.
How old is the battery?
Have you checked that the battery connections are clean and tight?
What is a long trip? To some that might mean 50 miles, to others a couple
And if you do get it started DO NOT remove the battery cables while it is
running to see if its charging. Unless you like buying ECMS. That method
30 years ago. Do it to an early ford, no ecm but electronic ignition and
you will buy
a new ignition module.
While on this subject, the proper way to jump start.
Vehicle providing the boost is shut off before the cables are connected.
Regardless of wither the vehicle being jumped starts or not the vehicle
providing the boost is shut off before the cables are disconnected.
The reason for this method is to avoid damaging the computer systems
on the vehicle providing the boost. If the vehicle being jumped has a
discharged battery it will pull a ton of amps and cause a hefty voltage
When the cables are removed, the amp load goes away, you get a massive
voltage spike. Computers do not like huge voltage fluctuations.
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