2000 Ford F-450 Keeps cranking

LITTLENEMO6800

MEMBER
2000 FORD F-450
195,000 MILES

I have an electrical issue. The truck keeps cranking withe the key off. I have rebuilt the starter and replaced the solenoid on the pass fender. Please help me. I have I have checked all the relays I have also checked all the grounds make sure they're all tight the only way I can turn off the starter this disconnect battery and one side return the battery it will sometimes keeps her cranky again you with the key off

1 Reply

CJ MEDEVAC

MECHANIC
11,004 POSTS

SOUNDS LIKE YOU EITHER HAVE SOMETHING HOOKED UP WRONG AT THE SOLENOID

THE IGNITION SWITCH IS IN THE "START POSITION" (NOT THE LOCK CYLINDER)

(I WOULD SAY STARTER RELAY IS STUCK......BUT I DO NOT SEE THAT YOU HAVE ONE ON THAT VEHICLE)

OR SOMETHING IS ENERGIZING "S" WIRE CONSTANTLY (WIRE TIED INTO IT....A SHORT WITH ANOTHER WIRE)......"S" WIRE IS THE LITTLE WIRE HOOKED TO THE SOLENOID, IT IS ATTACHED TO THE LITTLE TERMINAL MARKED "S" , IN THE PLASTIC, ON THE SOLENOID ITSELF
.
.
IS THE STARTER CABLE THE ONLY "WIRE" ON ONE SIDE OF THE SOLENOID?....IT SHOULD BE ALL BY ITSELF

YOU DID NOT SWAP "S" WIRE WITH "I" OR HOOK IT TO THE BATTERY SIDE OF THE SOLENOID WITH OTHER ACCESSORY WIRES?

IF YOU PULL "S" WIRE OFF OF THE SOLENOID AND LET IT DANGLE......DOES IT STILL WANNA TURN OVER?

CAN YOU USE A VOLTMETER?........PULL "S" WIRE OFF OF THE SOLENOID......TEST IT WITH THE KEY "OFF" AND THEN TEST IT WITH THE KEY "ON"???.......RESULTS?

ONE OF THESE COULD BE HELPFUL WHEN THIS ISSUE OCCURS OR EVEN WHILE YOU ARE TESTING

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_top-mount-battery-terminal-quick-disconnect-switch-autocraft_6280536-p?searchTerm=battery+quick+disconnect

YOUR TURN

THE MEDIC