bigredhdt Posted July 9, 2015 Report Share Posted July 9, 2015 After parking for about a week, I tried to start the truck, cranked a little and then just a click. Tested batteries and found 2 bad, replace all 4. Tried again with new batteries and turned a little, now won't do anything. I measured voltage at starter when trying to start, drops to about 11.5. I removed the starter (not for the faint of heart) and took to a shop for bench testing. They say the starter is good, but they did not load test it. Is that a good test? Prior to the problem, I have been experiencing slow cranking and intermittent no crank. Could this be an engine problem? Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted July 9, 2015 Report Share Posted July 9, 2015 Check your cables. Corrosion is your enemy with these multiple battery setups. Alie & Jim + 8 paws 2017 DRV Memphis BART- 1998 Volvo 610 Lil'ole 6cyl Cummins Link to comment Share on other sites More sharing options...
bigredhdt Posted July 9, 2015 Author Report Share Posted July 9, 2015 Test was at the starter. the batteries are joined by a flat plate rather than cables. I thoroughly cleaned the plates and cable ends when I changed batteries and before removing the starter. How can I test to see if the starter is bad? No load testing really only ensures that the bendix is working and the motor is not dead. under load these motors draw 1500 amps, so a ~1 volt drop is not out of the question. Using jumper cables is not a realistic test. The only thing I can think is to buy some new cables and bolt to starter and batteries to check it. Any thoughts? Link to comment Share on other sites More sharing options...
bigredhdt Posted July 9, 2015 Author Report Share Posted July 9, 2015 They only stock the chinese version of the denso gear reduction. Anyone have experience with them? Link to comment Share on other sites More sharing options...
CDR Posted July 9, 2015 Report Share Posted July 9, 2015 Mitsubishi gear reduction starters are the way to go. Curt 2001 Freightliner Century, 500hp Series 60, Gen 2 autoshift, 3.42 singled rear locker. 2004 Keystone Sprinter 299RLS (TT) 2 & 4 Wheelers! 2013 Polaris Ranger 800 midsize LE Our motto "4 wheels move the body, 2 wheels move the soul!" Link to comment Share on other sites More sharing options...
Dollytrolley Posted July 9, 2015 Report Share Posted July 9, 2015 Funny (well not so funny when you can't start) your thread pops up just the day after I pulled my four batteries out of the Freightshaker for the 6 month wash & wax the batteries and battery-box drill...... Just for grins I check each battery voltage before I start the work and the odd thing is that the two driver-side batteries were almost a full volt higher than the passenger side bats..........How could that be the case since ALL four batteries are SUPPOSED to be tied together.......... Well, the "tie-bolt" on the + inter-tie cable was arced almost in half and the slag had "insulated" the out-going positive cables (2) so that the two battery banks were "insulated" from each other with the 'pass-side-bats" being pretty much out of the loop...... Well the Freightshaker has a small 11 liter M11 Cummins so two-driver-side-bats were doing a serviceable job in cranking the engine. So......I disconnect ALL battery cable connections and clean all connections then install a new inter-tie bolt and spray corrosion inhibitor on ALL connection points........... I reconnect the battery minder and then check all voltages this morning..... all are even....... I turn the key and WOW I forgot how fast 4,000 Amps can spin a small 11 liter engine over........ Starting batteries are items that we tend not to notice until things wont start or are sloooow to crank.... The battery wash / wax is not much fun...... but almost always I find something that does need attention....... Hope the new starter helps....... Drive on......(after a good start.....) 97 Freightshaker Century Cummins M11-370 / 1350 /10 spd / 3:08 /tandem/ 20ft Garage/ 30 ft Curtis Dune toybox with a removable horse-haul-module to transport Dolly-The-Painthorse to horse camps and trail heads all over the Western U S Link to comment Share on other sites More sharing options...
rickeieio Posted July 9, 2015 Report Share Posted July 9, 2015 Mitsubishi gear reduction starters are the way to go. Curt I've installed three starters in the past three years. (Two semis and one farm tractor.) One was the Mitsubishi gear reduction unit. If I had it to do over, all three would have been that type. Okay, I must be honest here. I installed one, and much younger brother did the other two........ KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
bigredhdt Posted July 12, 2015 Author Report Share Posted July 12, 2015 Put a delco 39mt(gear reduction) in, can't believe what it does. This was an otr truck before I bought it in 2013. I just thought the starter spun the engine slowly because it was so big, but it always started. This new starter turns the engine like it's a 4 cylinder. I would bet the old Mitsubishi was the old, tired, original starter. Link to comment Share on other sites More sharing options...
bigredhdt Posted July 12, 2015 Author Report Share Posted July 12, 2015 After thinking about testing the wire, I came up with a way to do it, but you need a clamp on amp meter and a voltmeter. You will need to have some try and start the truck, one to watch the voltmeter and amp probe. Start the truck and observe the peak amps and minimum volts. The voltmeter needs to have on lead on the battery end of the cable and the other on the starter end. The you can calculate the wire resistance. Voltage divided by the current. Link to comment Share on other sites More sharing options...
SunJuniper Posted July 12, 2015 Report Share Posted July 12, 2015 Mitsubishi gear reduction starters are the way to go. Curt these are the cats meow for sure. DONT get the clones. Fulltimer Class of 2007 1998 Volvo VNL64T610 Detroit Series 60 12.7 470HP/1650TQ Eaton 18spd 228"WB Tandem2006 40' ToyHauler 3 slides and a 14' Toybox Link to comment Share on other sites More sharing options...
VegasFlyer Posted July 12, 2015 Report Share Posted July 12, 2015 Have you also tested your start relay? John Southern Nevada 2008 Volvo 780, D13, I-Shift 2017 Keystone Fuzion 420 Toyhauler 2017 Can-Am Maverick X3-RS Link to comment Share on other sites More sharing options...
bigredhdt Posted July 12, 2015 Author Report Share Posted July 12, 2015 Just to be clear, delco as in ac delco. I wouldn't call that a clone. The delco sheet shows more torque over the rpm range than the Mitsubishi and it was cheaper than the Mitsubishi from the Volvo dealer. Link to comment Share on other sites More sharing options...
SunJuniper Posted July 12, 2015 Report Share Posted July 12, 2015 Just to be clear, delco as in ac delco. I wouldn't call that a clone. The delco sheet shows more torque over the rpm range than the Mitsubishi and it was cheaper than the Mitsubishi from the Volvo dealer. unfortunately theres clones of just about every brand reduction starters. ive seen them with the big name logo and WERE a clone.... and cant really trust the parts guy to be honest with ya either. generally the cheaper the reduction starter , the higher the chance its a clone. Fulltimer Class of 2007 1998 Volvo VNL64T610 Detroit Series 60 12.7 470HP/1650TQ Eaton 18spd 228"WB Tandem2006 40' ToyHauler 3 slides and a 14' Toybox Link to comment Share on other sites More sharing options...
VegasFlyer Posted July 15, 2015 Report Share Posted July 15, 2015 Did you ever sort out what the problem was? John Southern Nevada 2008 Volvo 780, D13, I-Shift 2017 Keystone Fuzion 420 Toyhauler 2017 Can-Am Maverick X3-RS Link to comment Share on other sites More sharing options...
bigredhdt Posted July 16, 2015 Author Report Share Posted July 16, 2015 It was a weak starter. Put in new ac/delco 39mt and it spins the motor like it's not trying. Link to comment Share on other sites More sharing options...
VegasFlyer Posted July 16, 2015 Report Share Posted July 16, 2015 Good deal. John Southern Nevada 2008 Volvo 780, D13, I-Shift 2017 Keystone Fuzion 420 Toyhauler 2017 Can-Am Maverick X3-RS Link to comment Share on other sites More sharing options...
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