'92 S10 Blazer 4.3 battery drain when plowing

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  #1  
Old 11-28-06, 05:38 AM
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'92 S10 Blazer 4.3 battery drain when plowing

Hi- I have a '92 S-10 Blazer with the 4.3 non-Vortec engine. I had a 6.5 foot electric hydraulic plow installed last year that works very well. However, the battery drops sharply when raising or angling the plow, enough to dim the lights when done repeatedly. I know the stock Alternator is ~ 105 amps, and mine may be a bit tired, but what about the 160 amp units advertised on eBay? Think that would make the difference? Thanks!
 
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  #2  
Old 11-28-06, 09:13 AM
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If it was mine I would add a second battery, you need reserve power.
 
  #3  
Old 11-29-06, 07:52 AM
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The second battery would be a good idea. I would also add the larger alternator, especially if you plow for extended periods of time. At some point your recharge rate would become an issue.

Hope this helps,

Bob
 
  #4  
Old 12-01-06, 07:21 AM
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Plow problems

We had a Dakota at the auction that we used and had the same problems.
Our fix was to mount two 6 Volt, Golf Cart batteries in the bed and isolate them from the truck battery. If you think you could use more weight on the blade, weld some brackets on it and put the batteries on the blade. Be sure to wire the batteries so they give 12 volts.
 

Last edited by plwsnafu; 12-01-06 at 07:22 AM. Reason: addendum
  #5  
Old 12-02-06, 09:28 AM
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Thanks guys--next question re: batteries

Can I just run heavy duty battery cable through the firewall to the back of the Blazer and have the second battery back there? If so, I just have it wired positive to positve and neg to neg, as if jump-starting, right?

Thanks again,

Jim
 
  #6  
Old 12-03-06, 06:47 PM
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snow plow

If you use a single 12 volt battery, ( this is OK) wire it pos to pos neg to neg.
I would still ioslate it for insurance that it wont' drag the starting battery down. It should be a HEAVY DUTY 12 volt. Be sure to use at least 4 gauge and heaver if possible wire to the plow battery. I used 0 gauge. 4 may get really hot. If you can put the battery under the hood or on the plow it would be better as you can use smaller cable. You can also figure out how many amps your plow motor or hyd pump motor is rated for and be sure to use a big enough gauge wire to handle it. P=I over E. power = voltage over amps.
Basically, just wire in a large battery and isolate it from your engine battery and go for it. Be sure you use large wire.
Pat
Manager
CTM Auctions
Rochester, WA. 98579
 

Last edited by DIYaddict; 12-04-06 at 07:43 PM. Reason: Email address removed/This is for your protection and to prevent your email from being filled with spam.
  #7  
Old 12-03-06, 07:13 PM
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To isolate the extra battery from the truck battery you would have to add a voltage regulator to do the split charging. I think some RV s have that setup.

Hope this helps,

Bob
 
  #8  
Old 12-04-06, 08:49 AM
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Isolator

Shucks, Cragen, Checkers, NAPA or most auto parts stores should have or would be able to get you one. When installed it will keep the trucks battery from being discharged by the plows pump motor. Both batteries will charge from the OEM alternator.

Pat.
 
  #9  
Old 12-04-06, 04:39 PM
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P= I over E?
 
  #10  
Old 12-05-06, 01:49 AM
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ohms law

Originally Posted by firepaw View Post
P= I over E?
The basic ohms law thats what pie is
 
  #11  
Old 12-05-06, 04:30 PM
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Are you SURE you don't mean P = EI?
 
  #12  
Old 12-06-06, 05:14 PM
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Originally Posted by firepaw View Post
Are you SURE you don't mean P = EI?
OK, so at 62 I finally screwed up once in my life. Glad you caught this.
Pat.
 
  #13  
Old 12-06-06, 05:51 PM
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Hey Pat,
I wonder what the average age of the folks around here is. 61 myself.

Tom
 
  #14  
Old 12-06-06, 06:03 PM
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Since we're talkin' bout Ohms law,
V=I R
I= V/R
R= V/I
P= VI = I squared R

Since you asked, 43 years old.

Mackey.
 
  #15  
Old 12-07-06, 07:42 PM
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Reply

Originally Posted by Mackey View Post
Since we're talkin' bout Ohms law,
V=I R
I= V/R
R= V/I
P= VI = I squared R

Since you asked, 43 years old.

Mackey.
If you are talking pie I want blueberry.
 
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