No power
Thread Starter
Junior Member
Joined: Jul 2017
Posts: 1
Likes: 0
No power
1992 f150 with 4.9l 6cyl
Had battery tested
Had starter and starter solenoid tested
Check every fuse
replaced starter relay
And replaced ignition switch
And have no power on anything not even dome light.
Had battery tested
Had starter and starter solenoid tested
Check every fuse
replaced starter relay
And replaced ignition switch
And have no power on anything not even dome light.
Last edited by Bad mechanic; Jul 9, 2017 at 07:54 PM.
Old Timer
Joined: Mar 2016
Posts: 386
Likes: 19
From: Somewhere In North America
Do you own an Electrical Meter?
Do you know a Priest ?
Check your Battery Ground Connections, can look OK, but internal crimp connection could be fried.
Do you know a Priest ?
Check your Battery Ground Connections, can look OK, but internal crimp connection could be fried.
Last edited by vjsimone; Jul 10, 2017 at 04:25 PM. Reason: Adding Text
5 Year Member
Joined: Jun 2013
Posts: 517
Likes: 93
check the cabling...it is approaching 25 years old and can simply be corrosion between two lugs...no connection - yet the cable "looks" like new.
Start out simply, battery voltage disconnected, write it down. Then battery voltage connected, at the battery..then follow that "+" cable down towards...the next connection and see what the voltage is.
Voltage at the starter? Voltages at the starter relay? Voltages at the fuse block...?
Need to find a wiring diagram of the battery area and underhood, is available in most manuals or on the web.
Somewhere there is a missing ground, missing 12volt cable or bad one/two other cables between the battery and the components needed for power.
Start out simply, battery voltage disconnected, write it down. Then battery voltage connected, at the battery..then follow that "+" cable down towards...the next connection and see what the voltage is.
Voltage at the starter? Voltages at the starter relay? Voltages at the fuse block...?
Need to find a wiring diagram of the battery area and underhood, is available in most manuals or on the web.
Somewhere there is a missing ground, missing 12volt cable or bad one/two other cables between the battery and the components needed for power.
Senior Member
Joined: Dec 2012
Posts: 401
Likes: 33
The ideas about checking grounds and looking for wire corrosion are good. I've also had this problem a few times and I've always been able to fix it with a battery terminal/connector cleaning brush (should be ~$2 at any auto parts store).