Posted by John T on August 18, 2014 at 13:14:28 from (216.249.72.121):
In Reply to: solenoid mystery posted by tom orlando on August 18, 2014 at 12:38:39:
I'm thinking of TWO kinds of starter Solenoids
Most Common Type A) Normally, far as I know (NO Warranty), if a Solenoid only has the two big INPUT (from battery) and OUTPUT (To Starter) Studs PLUS a very small terminal, it only engages if there's hot voltage applied to the small terminal which runs through the coil then to case ground. I cant envision a Type A solenoid that has closed contacts until voltage is applied to the small terminal and ground.
Type B) If I recall correctly (Again NO Warranty) some Fords used a solenoid that looked the same as above HOWEVER one of the big stud terminals (Hot Input side from battery) was wired to the coil and the solenoid engaged WHEN A GROUND WAS ATTACHED TO THE SMALL TERMINAL via the push to start button like old Fords had.
You asked for tests: Id say there ought to be continuity from the small terminal to case frame (if a Type A) and its resistance is the activation coil. See if there's continuity from the small terminal to either of the big studs??? Unless its an old Ford type there shouldn't be in my opinion.
Okay, I'm done now lol where am I going with this ??? I forget. I doubt its an old Ford type Solenoid (needs a ground to small terminal to engage)
Darn if I know, but I'm in a hurry for now maybe it will come to me in a vision lol
PS I have one "continuity tester" that's the ultra sensitive type with a light that will glow even if my fingers are on the device, so it glows continuity even when a set of contacts would be open. Just another thing to consider. BUT YOURS SHOWS OPEN AS ID EXPECT not continuity???
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