1991 F150 - No Electrical Suddenly (no start)
04-16-2015, 12:31 PM
#1
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Thread Starter
1991 F150 - No Electrical Suddenly (no start)
Hello Folks,
My 1991 F150 Flatbed (6cyl) has been my daily work-truck for the last several months.
This morning, however, I went to start it up, and the starter motor didn't even sound like it made a full revolution.. and all the electrical to the truck stopped (seemed to go dead). (even the interior dome light went out)
Thought it may be battery - but voltmeter shows 12.3v, and tried jumping it off with jumper cables - but still no dice.
Starter solenoid has the same 12.3v at the hot side of it... but the curious thing - after I tried starting the truck the first time - the interior dome-light would not even come on.
I completely disconnected the battery for a few minutes to see if something just needed to be reset... (and I tapped on the starter motor with a long screwdriver). After hooking the battery back up, the dome light came back on... but when I turned the key to fire it up - it once again sounded like the starter motor didn't even make a full revolution, and all electrical (i.e. interior dome light) again disappeared.
What is my next diagnostic course of action? Is is possible I have a bad starter motor that is on the fritz? (or may be grounding out?) - (but the battery is still charged...)
I *DID* change out the starter solenoid on the inside passenger side fender a few months ago... I'm just wondering if there's a relay somewhere I need to wiggle or clean the contacts of - or if I need to pursue the starter itself.. or what...
Thank you!! (Ready NOW to have my work truck back on the road) lol
Rex S.
'91 F150 6cyl.
My 1991 F150 Flatbed (6cyl) has been my daily work-truck for the last several months.
This morning, however, I went to start it up, and the starter motor didn't even sound like it made a full revolution.. and all the electrical to the truck stopped (seemed to go dead). (even the interior dome light went out)
Thought it may be battery - but voltmeter shows 12.3v, and tried jumping it off with jumper cables - but still no dice.
Starter solenoid has the same 12.3v at the hot side of it... but the curious thing - after I tried starting the truck the first time - the interior dome-light would not even come on.
I completely disconnected the battery for a few minutes to see if something just needed to be reset... (and I tapped on the starter motor with a long screwdriver). After hooking the battery back up, the dome light came back on... but when I turned the key to fire it up - it once again sounded like the starter motor didn't even make a full revolution, and all electrical (i.e. interior dome light) again disappeared.
What is my next diagnostic course of action? Is is possible I have a bad starter motor that is on the fritz? (or may be grounding out?) - (but the battery is still charged...)
I *DID* change out the starter solenoid on the inside passenger side fender a few months ago... I'm just wondering if there's a relay somewhere I need to wiggle or clean the contacts of - or if I need to pursue the starter itself.. or what...
Thank you!! (Ready NOW to have my work truck back on the road) lol
Rex S.
'91 F150 6cyl.
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Rex Smith (04-16-2015)
04-16-2015, 01:17 PM
#3
Member
Thread Starter
Nail -> Head... lol. 
While you were posting this - I was out at the truck, cleaning the corrosion off of the ground and hot connectors at the battery. (+ connection wired were rusted, and the (-) connectors were grease-coated & a little corrosion to them.)
It fired right up afterwards. Back to work!
While you were posting this - I was out at the truck, cleaning the corrosion off of the ground and hot connectors at the battery. (+ connection wired were rusted, and the (-) connectors were grease-coated & a little corrosion to them.)
It fired right up afterwards. Back to work!
The following users liked this post:
Rex Smith (04-16-2015)
