Batt Light
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From: Yakistan, WA
Batt Light
Hey guys. I have a question in this post.
After driving around I found that battery light was on, and then it eventually went to flickering and coming on and off. So after many moments of looking around the engine bay, I found the alternator positive terminal post was loose on the cable connection. Tightened it up and it went away.
But now when I go to start it sometimes the battery light comes on for a split second and then goes away after start up, not coming on again after start up
What gives?
After driving around I found that battery light was on, and then it eventually went to flickering and coming on and off. So after many moments of looking around the engine bay, I found the alternator positive terminal post was loose on the cable connection. Tightened it up and it went away.
But now when I go to start it sometimes the battery light comes on for a split second and then goes away after start up, not coming on again after start up
What gives?
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
Check all the battery connections and ground to frame, clean and dielectric grease too. Also, voltage cold soak, voltage cranking, voltage running after GPs off? Looking for condition of batteries and alternator function. Might need to load test both batteries and test alternator.
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From: Yakistan, WA
SG shows 11.2 lowest on cranking. 13.8 to 14.2 while running. I will check voltages in the morning.
It actually stopped doing the the three times I drove it since I posted this. Of course
It actually stopped doing the the three times I drove it since I posted this. Of course
Hotshot
Joined: Dec 2014
Posts: 17,823
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From: Jersey Shore
The terminal connection, was that for all connections to the batteries or just one of two or three?
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
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From: Yakistan, WA
The terminal connection, was that for all connections to the batteries or just one of two or three?
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
One last thing, I was messing around with the fuel pressure testing port, and I drained the fuel a couple of times in the process. Then I did the procedure of "key on, engine off" to get the bowl filled back up. I did this full procedure twice. I know that this is hard on those batteries, as they are also giving juice to everything and the glowplugs.
So I will be putting the batteries on a charge, here soon. Maybe I drained them a little in that process.
Thanks for the help guys - Preston
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Joined: Apr 2015
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From: Yakistan, WA
Thank you Jack and Ed for the help. I will get that done.
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
The terminal connection, was that for all connections to the batteries or just one of two or three?
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
My concern with an alternator intermittent connection is there was damage done to the control electronics within the alternator. Batteries would be fine, just possibly low in storage if the alternator is not charging at the full amps as it did new.
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Posting Guru
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From: Yakistan, WA
I am going to pull the alternator tonight, and have it bench tested tomorrow.
How do you bench test "hot"?
Or do you mean the alternator doesn't work correctly when hot.
Can someone school me please.
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
Diodes used for rectification are one of the few electronic components that can be what's referred to as self healing. Can create major problems when trouble shooting.