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#1 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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72 c10 starting system
Ok, sbc 350 with th400 trans. 168 tooth flexplate. Jegs super lite starter part#10060 there is continuity test from signal terminal on solenoid to starter housing. Which is sending battery voltage through engine block, During cranking????? Shorts out starter.. any help is appreciated
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#2 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
Correction part#10065
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#3 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
Ok, how many ohms are you reading from the solenoid to the housing? You should have a reading as one side of the coil is connected to power one side is connected to the housing for ground. If it reads as a dead short (little or no resistance) than I would think the solenoid is bad or in contact with the housing somewhere.
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#4 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
0-ohms.that's what I thought also. I had jegs send me a 2nd starter. Same thing...
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#5 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
Have you tried the starter outside of the vehicle?
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#6 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
Yes,works fine. But when bolted to to engine and during cranking there is battery current on engine block. Disconnect wires from starter and simulate starting no battery current at block.
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#7 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
What is the grounding like at the block where the cable connects and where the starter bolts up? Is everything clean? Is the good continuity from battery to starter? What size is the ground the ground cable?
Have you tried running a jumper cable from the starter directly to the ground terminal of the battery? Sounds like you are lacking sufficient ground. |
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#8 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
New 00 gauge wires on battery. Negative battery terminal to passenger side frame.. driver's side rear head grounded to drivers side frame same 00 gauge. Have not tried jumper ground. Also there is a little paint on lock where starter mounts... but still battery current at block?
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#9 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
You need ground to complete a circuit, if you don't have that ground you will energize the ground side till a ground is found, if not everything connected will read power.
Have you tried you meter reading from the starter housing to the battery ground terminal? |
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#10 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
Ohms?
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#11 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
Yes on ohms
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#12 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
0.2 ohm....that sound right to you?
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#13 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
That sounds like it should work but that could change under load. If it were me I would try the jumper cable now.
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#14 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
Just ground straight from starter housing to negative on batt. Makes sense I will let you know
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#15 |
Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: 72 c10 starting system
((((((Negative battery terminal to passenger side frame))))) Try the neg battery terminal to the block...
__________________
Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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#16 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,713
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Re: 72 c10 starting system
Yes the biggest current draw in the truck is the starter so you need to connect negative to the block for the least voltage drop.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#17 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Battery ground cable always go to the engine block never the frame.
I have added several grounds in my engine bay but the main one is Battery ground to passenger side engine block. I then have #6 cables going from both sides of the engine to frame for assurance. ![]()
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#18 |
Registered User
Join Date: Mar 2015
Location: Montgomery
Posts: 15
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Re: 72 c10 starting system
Fix ground fired right up..don't know what I was thinking. Thanks for all the help. Great website, Great group of people....
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#19 |
Registered User
Join Date: May 2015
Location: Edmonton,Alberta, Canada
Posts: 103
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Re: 72 c10 starting system
Glad to hear you got it figured out.
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#20 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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![]() Quote:
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__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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