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Username Post: Alternator issues...I think.        (Topic#348256)
The Beaster 
Forum Newbie
Posts: 5

Reg: 11-11-17
11-17-17 06:03 PM - Post#2714806    

Another problem for my old truck.
I suspect the alternator. Battery is fairly new. Has been dieing lately. With heavy use plowing today...the truck just died.
What is an easy test to comfirm it is a bad alternator?(alternator is quite old).
Also.how do I attach a pic to a post?



 
LMC Truck
gchemist 
Senior Chevytalk Moderator
Posts: 24202
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
11-18-17 05:52 AM - Post#2714832    
    In response to The Beaster

Use a voltmeter. What is the output at idle or above idle?
If you don’t have a voltmeter, use the lights. Turn on the inside cab light while running. Next, turn on the headlights. The inside light should dim for a bit then brighten up again. If it does not brighten up again, you can suspect low voltage and possiblely a bad alternator.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24202
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
11-19-17 05:52 AM - Post#2714917    
    In response to gchemist



Attachment: beaster.jpg (269.46 KB) 4 View(s)


Introducing The Beaster!


'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24202
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
11-20-17 05:12 AM - Post#2715046    
    In response to gchemist

How many miles on the 454? It will like the new module over points.
What's the wheel green stuff?

Is that a barn? Nice log setup.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
farm rat 
Contributor
Posts: 106

Reg: 09-13-16
11-20-17 09:41 AM - Post#2715082    
    In response to The Beaster

Start the truck then unhook the battery. If the truck keeps running then the alt. is still working at least somewhat.



 
LMC Truck
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