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spankyjr1, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 2613
Experience:  I worked on all types of equipment semis,forklifts,farm,ect.
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Detroit wont start turn key, everything comes on but wont

Customer Question

Detroit wont start turn key, everything comes on but wont crank. its done it before but turn key several times and it would finally catch
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  spankyjr1 replied 2 years ago.
Hi, my name is ***** ***** you for your question.
Start by clean and check all battery cables,,starter cables,,cab grounds and engine grounds.
Normally there are two starter solenoids, see if you are getting power to S terminal at starter while in crank position,,if you are you need that starter solenoid.The internal contacts get worn and cause this issue here.
If that checks out okay follow S terminal wire back usually to firewall for second solenoid or relay and replace that one.
The other things that can cause this are neutral safety switch/clutch switch,key switch.