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<div> <font size="3">That's pretty high. If the current is 10A you will have a 3 volt drop across that cable.</font><br>
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<div style="clear:both"><font size="4">Dave </font><br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font size="2">-----Original Message-----<br>
From: john niolon <jniolon@att.net><br>
To: DAVID MASSEY <dave1massey@cs.com>; shop-talk@autox.team.net <shop-talk@autox.team.net><br>
Sent: Mon, Aug 9, 2021 2:57 pm<br>
Subject: Re: [Shop-talk] electrical problem with truck<br>
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<div>checked all ground connections and resistance thru cables</div>
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<div>neg post on battery to ground bolt in frame 0.37 ohms</div>
<div>all 1/0 cables read 0.2 to 0.3 ohms</div>
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<div><b>----- Original Message -----</b></div>
<div><b>From:</b> DAVID MASSEY <<a shape="rect" target="_blank" rel="noreferrer noopener">dave1massey@cs.com</a>></div>
<div><b>Reply-To:</b> DAVID MASSEY <<a shape="rect" target="_blank" rel="noreferrer noopener">dave1massey@cs.com</a>></div>
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<div><b>To:</b> <<a shape="rect" target="_blank" rel="noreferrer noopener">jniolon@att.net</a>>, <<a shape="rect" target="_blank" rel="noreferrer noopener">shop-talk@autox.team.net</a>></div>
<div><b>Sent:</b> 8/9/2021 2:02:32 PM</div>
<div><b>Subject:</b> Re: [Shop-talk] electrical problem with truck</div>
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<div><font size="3">Check between frame ground and battery negative. A rusty connection there can cause all manner of similar problems.</font><br clear="none"></div>
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<div style="CLEAR:both;"><font size="4">Dave </font><br clear="none"><br clear="none"></div>
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<div style="FONT-SIZE:10pt;FONT-FAMILY:arial, helvetica;COLOR:black;"><font size="2">-----Original Message-----<br clear="none">From: john niolon <jniolon@att.net><br clear="none">To: shop-talk <shop-talk@autox.team.net><br clear="none">Sent: Mon, Aug 9, 2021 12:55 pm<br clear="none">Subject: Re: [Shop-talk] electrical problem with truck<br clear="none"><br clear="none">
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<style type="text/css">#yiv1494141348 body {margin:0.7em;}#yiv1494141348 body.yiv1494141348OECFntDef, #yiv1494141348 body.yiv1494141348OECFntDef div {font-family:Tahoma, Verdana, Arial, Helvetica, sans-serif;font-size:12pt;}</style>
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<div class="yiv1494141348nolinks" id="yiv1494141348post_message_20009636" style="FONT-SIZE:13px;FONT-FAMILY:Verdana, geneva, lucida, arial, helvetica, sans-serif;WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FONT-WEIGHT:400;COLOR:rgb(34,34,34);PADDING-BOTTOM:0px;FONT-STYLE:normal;PADDING-TOP:0px;PADDING-LEFT:0px;ORPHANS:2;WIDOWS:2;MARGIN:0px;LETTER-SPACING:normal;PADDING-RIGHT:0px;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px;text-decoration-style:initial;text-decoration-color:initial;">sorry for slow response... helping daughter and sil move...priorities!!!</div>
<div class="yiv1494141348nolinks" style="FONT-SIZE:13px;FONT-FAMILY:Verdana, geneva, lucida, arial, helvetica, sans-serif;WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FONT-WEIGHT:400;COLOR:rgb(34,34,34);PADDING-BOTTOM:0px;FONT-STYLE:normal;PADDING-TOP:0px;PADDING-LEFT:0px;ORPHANS:2;WIDOWS:2;MARGIN:0px;LETTER-SPACING:normal;PADDING-RIGHT:0px;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px;text-decoration-style:initial;text-decoration-color:initial;"> </div>
<div class="yiv1494141348nolinks" style="FONT-SIZE:13px;FONT-FAMILY:Verdana, geneva, lucida, arial, helvetica, sans-serif;WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FONT-WEIGHT:400;COLOR:rgb(34,34,34);PADDING-BOTTOM:0px;FONT-STYLE:normal;PADDING-TOP:0px;PADDING-LEFT:0px;ORPHANS:2;WIDOWS:2;MARGIN:0px;LETTER-SPACING:normal;PADDING-RIGHT:0px;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px;text-decoration-style:initial;text-decoration-color:initial;">Monday a.m. report<br clear="none"><br clear="none">fresh charge on battery 40 amp for 30 minutes on saturday trickle charger since then .. battery voltage 13.4 this a.m. checked with two different meters<br clear="none"><br clear="none"><br clear="none">hooked up H.F. 500 amp load tester, voltage reading same as VOM at 13.4<br clear="none">voltage at frame rail terminal also 13.4<br clear="none"><br clear="none">battery has 800 CCA capacity<br clear="none">started test... over 15 second test the battery slowly dropped to 320 amps and voltage read 10.8 (still in the green scale)<br clear="none">stopped test at 15 seconds and two minutes later battery was back up to 12.7<br clear="none"><br clear="none"><br clear="none"><img class="yiv1494141348post_inline_image" style="BORDER-TOP-STYLE:none;MAX-WIDTH:100%;BORDER-LEFT-STYLE:none;HEIGHT:auto;VERTICAL-ALIGN:middle;BORDER-BOTTOM-STYLE:none;BORDER-RIGHT-STYLE:none;DISPLAY:inline-block;" alt="" src="https://cimg8.ibsrv.net/gimg/www.ford-trucks.com-vbulletin/360x270/voltsa_1305c5989a3f57a2ffce9e2b49c805e0eed9be69.jpg"><br clear="none"><img class="yiv1494141348post_inline_image" style="BORDER-TOP-STYLE:none;MAX-WIDTH:100%;BORDER-LEFT-STYLE:none;HEIGHT:auto;VERTICAL-ALIGN:middle;BORDER-BOTTOM-STYLE:none;BORDER-RIGHT-STYLE:none;DISPLAY:inline-block;" alt="" src="https://cimg3.ibsrv.net/gimg/www.ford-trucks.com-vbulletin/360x270/amps1_d85e8a6155a607aae42c4fe2bbfde35778478032.jpg"><br clear="none"><br clear="none">next step will be check alternator output at battery and terminal point<br clear="none"><br clear="none">ok... started truck... engine at 1200 rpm<br clear="none">meter on alternator o/p- voltage is 14.6<br clear="none">meter on battery voltage is 13.5<br clear="none"><br clear="none">hmmm...1.1 volt drop in 4' of 1/0 cable....that don't sound right<br clear="none">need to measure resistance of cable I guess...<br clear="none"><br clear="none">as an aside... checked voltaged between frame ground and the case of the alternator... 0.0001 volts<br clear="none"><br clear="none">I also took battery back to Wal mart and Quintella checked it... battery is good based on her years of</div>
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<div><b>----- Original Message -----</b></div>
<div><b>From:</b> john niolon <<a shape="rect" target="_blank" rel="noreferrer noopener">jniolon@att.net</a>></div>
<div><b>To:</b> shop-talk <<a shape="rect" target="_blank" rel="noreferrer noopener">shop-talk@autox.team.net</a>></div>
<div><b>Sent:</b> 8/6/2021 8:58:12 AM</div>
<div><b>Subject:</b> [Shop-talk] electrical problem with truck</div>
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<div>jeff…. regular led acid battery ?? <font color="#ff0000">Everstart Maxx27 800 CCA regular Walmart battery</font></div>
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<div>When it died, did any of the electrical items still work? Lights, etc.? <font color="#ff0000">when it first occurred ,, when I tried to restart, .. starter just clicked and I remember the a/c fan still blowing</font></div>
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<div><font color="#ff0000"></font> </div>
<div><font color="#000000">Donald... How large is the cable from the alternator to the battery? </font><font color="#ff0000">feed from battery to alternator is #4 wire<br clear="none"></font></div>
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<div><font color="#ff0000"><font color="#000000">Dave... I was thinking a dirty battery clamp.</font> battery clamps are new this year and clean, no corrosion on connections</font></div>
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<div><font color="#ff0000"><font color="#000000">John... How is the volt meter in your truck grounded, to the frame or to the motor?</font> voltmeter in dash is grounded to dash frame voltmeter used to check under hood is grounded to frame not engine. I'll go back and check ground connections. Alternator has a ground terminal of it's own... it's #10 wire grounded to the frame and of course the alternator is grounded through it's mount.</font></div>
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<div><font color="#000000">Pat... what is the relationship between the frame terminal & the rest of the electrical system? </font>Terminal on the frame rail is fed by a 4' piece of #4 wire from the i/p solenoid lug where the cable from the battery is connected to the solenoid.</div>
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<div><font color="#000000">Jimmie.. What's the voltage at the terminal with those accessories 'on' but the engine 'off'</font> hmmm ?? don't remember checking that, … I'll do that</div>
<div> <font color="#000000">How big is the alternator?</font> 100 amp single wire from CVF racing</div>
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<div><font color="#000000">ya'll have given me lots to check and recheck and some I haven't thought of... going back through my diagnostics and check connections too. I bought a 500 amp load tester yesterday and will put sufficient load on the battery. Battery is under the cab and I have to lower it to check it out and with the low truck, I have to raise truck on jackstands.. silly me, I thought battery would be a low maintenance item ...duh. so checking at a shop somewhere is a very large pain.</font></div>
<div><font color="#000000"></font> </div>
<div><font color="#000000">points I'm considering.... larger ground wires from frame to engine.... alternator to frame and check resistance from solenoid lug to the terminal on the frame... the saga continues</font></div>
<div><font color="#000000"></font> </div>
<div><font color="#000000">thanks for all the replies and points to check.. you guys are the best</font></div>
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<div><font color="#000000">john</font></div>
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