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Econoline starter relay

A

Anonymous-0

Well-known Member
I have been working on this for some time off and on. It has not been started since I drove it home and the engine died just after I parked it. The battery was dead. I charged it and disconnected the ground cable. Today I realized that the starter was bad and put on another one that I had. When I started it up, it sounded like the starter was not disengaged. I did some checking and found out that the solenoid was energized after the key was let go after starting. I am suspicious that the last time I worked on it, that I put one of the wires on the wrong terminal of the relay. I don"t have a wiring diagram for it, but have one for another Ford vehicle. I think that I put a wire on the same terminal as the starter solenoid wire is on. Should there be any other wire on that terminal. It seems like it is backfeeding the solenoid. Should the wire that I think is on the wrong terminal be on the always hot side?
 
your positive battery cable goes to one of big lugs, the cable from the other goes to the starter, then you have two small lugs on the soleniod, one goes to the switch, and is activated when you turn the key to crank the engine. the other one is the resistor by pass wire, no extra wires should be on either of those small lugs.
 
your positive battery cable goes to one of big lugs, the cable from the other goes to the starter, then you have two small lugs on the soleniod, one goes to the switch, and is activated when you turn the key to crank the engine. the other one is the resistor by pass wire, no extra wires should be on either of those small lugs.
 
What year is the unit?

(The solenoid contacts MAY have burned/stuck from the old problem of weak battery/bad starter.)

It would NOT by unusual to find a wire (that feeds the vehicle's electrical system) on the always-hot solenoid terminal.

The two little terminals are labeled "S" (START) and "I" (feeds battery power directly to the Ignition system while cranking).

Remove those wires, and with ignition "ON", the wire that is "hot" goes to the "I" terminal, leaving the wire that is "hot" only during cranking to go to the "S" terminal.
 
I did not mess with the small wires when I was working on it last month. I hooked up the wire in question to the always hot big lug and drove it out of the garage door opening for the night. It acted right, but I disconnected the ground cable from battery just to be safe until I get this figured out for sure.
Thanks for the replies.
 
The extra wire go's on the battery side of the solenoid. The starter cable is the only wire on the starter side.
 
This may be a vehicle with 2 starter relays. I think the one you are looking at is located piggy back on the starter. But there may be another starter relay located near the battery, possibly on the inner fender or core carrier. My freind's 88 Ford with the 6 cylinder engine had this 2 solenoid setup, and the one located closest to the battery had failed, hanging up on the release of the key (start position) and keeping the starter engaged and running against the ring gear. He replaced the stand alone starter relay and everything works fine.

I have a 93 E350 with a 351, but I have never had this problem on that vehicle, so I can't tell you for sure what to look for.

Good Luck, electrical gremlins are tricky little devils, and are real good at hiding.

Paul in MN
 
I would not touch new cars with out a service manual on hand.I started working as a mechanic in the 50s.New cars are a nightmare.
 
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