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Starter Relay/Solenoid No Start When Hot

Tiny
DGEORGE
  • MEMBER
  • FORD F-150
93' F-150, 5.0l, 120k

I have replaced the starter relay on the fender and spliced a new lead to the starter solenoid. I have had to do this (splicing the solenoid lead) half a dozen times in the three years I've owned the truck, for reasons I can't determine. Now it starts fine when cold but will not engage the starter when it's hot. What am I missing? Thanks.
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Tuesday, February 20th, 2007 AT 2:55 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Disconnect the solenoid wire, now get a buddy to turn ignition key to Start position check for voltage at the lead-put that wire to the S terminal on the solenoid the other one on I terminal.

No power take it back thru the neutral safety switch and to the ignition switch

Make sure the relay is grounded properly.
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Tuesday, February 20th, 2007 AT 3:39 PM
Tiny
MALLETSLINGER
  • MEMBER
  • 19 POSTS
Might also want to add a heat shield for the starter if you dont already have one there.
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Tuesday, February 20th, 2007 AT 4:02 PM

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