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Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9442
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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My fl70 will not start with the switch but if I turn the key

Customer Question

my fl70 will not start with the switch but if I turn the key on and go to the solenoid relay on the passenger side firewall and short across it then it starts.that worked for awhile but now when I turn the key on I lose power to everything after a few seconds.I can wait a few minutes an d turn the key back on again and once again I have power for a few seconds then I lose everything again.i have already tried a new ignition switch and nothing changed,whats the problem?
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 2 years ago.
Hi I'm Wayne
I will help you
1st replace that solenoid on fire wall, that is a problem in this issue
next clean all grounds on Frame,starter and at battery
with sand paper , you are loosing a ground
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