could use some help please
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New User
Joined: Jan 2012
Posts: 2
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could use some help please
hey guys my 06 sd diesel would not start so i boosted it started right up but when took the cables off nothing in the cab would work windows heater fan dash nothing but the tuck was runing fine so put the cables back on everthing was working left it for awhile and shut it off and same thing agian if any answers would help new to the fourm its great hope somone can help
Laughing Gas
Joined: Aug 2010
Posts: 1,098
Likes: 6
From: Ventura co.
I would have the battery's tested. They may show a charge, but under load it's not enough to keep things going and if the battery has a dead cell in it , it will cause other problems if you keep jumping it and running the jumper as power.
Hotshot
Joined: Feb 2003
Posts: 11,537
Likes: 27
From: Long Beach, Ms.
Your alternator has failed. = No 12V
Your batteries are dead from supplying all of their available power. = No 12V
The electrical will work when there is the power from the boost vehicle. = +12V
Removal of the boost source removes the 12V available from it. = No 12V
A diesel will run after start without 12V.
It needs 12V to start though.
BUT everything else on the truck needs 12V to function.
Take your alt to the parts store and have it tested.
Then bring the new one back and install it.
I hope that your batteries are still good (?)
Charge them with a plug in charger NOT the new alternator.
WELCOME TO FTE!
Your batteries are dead from supplying all of their available power. = No 12V
The electrical will work when there is the power from the boost vehicle. = +12V
Removal of the boost source removes the 12V available from it. = No 12V
A diesel will run after start without 12V.
It needs 12V to start though.
BUT everything else on the truck needs 12V to function.
Take your alt to the parts store and have it tested.
Then bring the new one back and install it.
I hope that your batteries are still good (?)
Charge them with a plug in charger NOT the new alternator.
WELCOME TO FTE!
Senior User
Joined: Sep 2011
Posts: 428
Likes: 0
Your alternator has failed.
Your batteries are dead from supplying all of their available power.
The electrical will work when there is the power from the boost vehicle.
Removal of the boost source removes the 12V available from it.
Take your alt to the parts store and have it tested.
Then bring the new one back and install it.
I hope that your batteries are still good (?)
Charge them with a plug in charger NOT the new alternator.
WELCOME TO FTE!
Your batteries are dead from supplying all of their available power.
The electrical will work when there is the power from the boost vehicle.
Removal of the boost source removes the 12V available from it.
Take your alt to the parts store and have it tested.
Then bring the new one back and install it.
I hope that your batteries are still good (?)
Charge them with a plug in charger NOT the new alternator.
WELCOME TO FTE!
I have to agree you can check and see if your alternator is good on the truck take a volt meter your voltage should 13.1-14.8 if it is in the 12v range your alt is shot
and charge it with a battery charger they actually do a full charge
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Laughing Gas
Joined: Aug 2010
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From: Ventura co.
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Hotshot
Joined: Feb 2003
Posts: 11,537
Likes: 27
From: Long Beach, Ms.
A diesel engine does not use an electrical spark to ignite the fuel mix.
The fuel is squeezed (COMPRESSED) by the piston which causes the fuel mix to heat to combustion.
They explain it much better than I do at;
HowStuffWorks "Diesel Engines vs. Gasoline Engines"
The fuel is squeezed (COMPRESSED) by the piston which causes the fuel mix to heat to combustion.
They explain it much better than I do at;
HowStuffWorks "Diesel Engines vs. Gasoline Engines"
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Correct and charging dead batteries with an alternator will kill the alternator as well as the FICM IF the alternator isn't already dead.
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