Intermittent hard start help needed
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
if your going to get a Cheap Alt just as well get Oreilys or Auto Zone ONE With Lifetime Warrenty
Some folks do this and just have 2 Alts one in truck for Backup since they so easy to change
Some folks do this and just have 2 Alts one in truck for Backup since they so easy to change
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Junior User
Joined: Jan 2007
Posts: 57
Likes: 0
Hasn't come on at all. I hear that's not out of the norm though. The only time the light came on was a couple of weeks ago when I was having the major issues when it was freaking cold and cranking for 10-15 seconds.
Hotshot
Joined: Apr 2010
Posts: 19,056
Likes: 235
From: Saratoga Springs,UT
well any alt problems that lights usually ON
Keep in Mind 12.68volts is Battery at 100% Charged
My Last OEM ALT was like this
I waited till the light pretty well stayed on and it wouldnt get over 12.9volts alt output
Maybe you can Push it till you have the Funds to do it Right the first time
If I was in your shoes Id watch it and try to get my Tax Return or something then Spend the money on a Good One From DC Power Alternators in 1 shot
as long as you can monitor it I bet you might get another Month out of it as long as Everything eles OK Like Batterys and cables
Keep in Mind 12.68volts is Battery at 100% Charged
My Last OEM ALT was like this
I waited till the light pretty well stayed on and it wouldnt get over 12.9volts alt output
Maybe you can Push it till you have the Funds to do it Right the first time
If I was in your shoes Id watch it and try to get my Tax Return or something then Spend the money on a Good One From DC Power Alternators in 1 shot
as long as you can monitor it I bet you might get another Month out of it as long as Everything eles OK Like Batterys and cables
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Junior User
Joined: Jan 2007
Posts: 57
Likes: 0
I'm concerned about the FICM seeing as with the current voltage, it is only holding 11.5-12.0 at idle (FLP/FVP) and has a hard time holding 13.0-13.5 at highway speeds. I don't need to kill another one or the wife will surely murder me for having to buy another one so soon.
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Junior User
Joined: Jan 2007
Posts: 57
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Nope, doesn't recover, that's why I know there's a problem. The voltage used to come fully back up after the glow plugs shut off but not now.
Elder User
Joined: Jul 2010
Posts: 610
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From: Sequim. WA
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Junior User
Joined: Jan 2007
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OK, time to update this thread. So my mechanic is finally back at work and we were able to get the truck scanned. This was great timing because the no starts were getting to be daily. 
I had started to suspect that the batteries were giving me grief as well, but we load tested them and the are still good. Anyhow, it turns out that the problem all along was the GPCM. The #8 injector had a code in the computer but now that the glow plugs are working it runs SOOOOO much better. It doesn't even smoke on start up anymore. 
Now all I need to do is find a warm day to pull the turbo because the vanes are starting to stick on me. Always something to do when you own a 6.0L. 
I had started to suspect that the batteries were giving me grief as well, but we load tested them and the are still good. Anyhow, it turns out that the problem all along was the GPCM. The #8 injector had a code in the computer but now that the glow plugs are working it runs SOOOOO much better. It doesn't even smoke on start up anymore. Now all I need to do is find a warm day to pull the turbo because the vanes are starting to stick on me. Always something to do when you own a 6.0L.
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Junior User
Joined: Jan 2007
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HaHa I win... see post #14 
Glad you got things figured out.
Glad you got things figured out.
I had been suspecting it as well, but there was so much other stuff going on that I started looking elsewhere. I just wanted to get it scanned before I spent any more money needlessly.
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