North American Turbocoupe Organization



Damage caused(potentially);starter
BradM Offline
Member
#31
Enclosed is the circuit diagram of the ignition/starter. You can see how the clutch safety switch works. Note the solenoid trigger is tied to memory seat and anti theft circuits. If the ignition switch and clutch switch test OK, you should explore these other circuits. Something is keeping 12V on your solenoid circuit after starting.


Attached Files
.pdf   1987 Thunderbird service manual ignition.pdf (Size: 167.98 KB / Downloads: 10)
1965 Mercury Comet Caliente; 1968 Mercury Monterey; 1969 F100 Ranger; 1987 Thunderbird Turbo Coupe
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Coupedaddy Offline
Member
#32
So I removed the connector on the solenoid, put the key in the ON position and as soon as I connect the battery, the starter is cranking.  I even went back into the steering column, disconnected and removed the starter switch ..................... same thing. Is that even possible?  "Ghost In The Machine"?  Circuit diagrams are a bit beyond my level of comprehension so thanks but I'm afraid they wont help.  Starter cranking strong but just wont disengage.  Can't think of anything else I can do out in my garage.  Looks like I'll have to call "The Hook" and send her back to the shop again :-((
Cupddy
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vegas_ss Offline
Senior Member
#33
Give the solenoid a smack with a rubber mallet, it is stuck in the engaged position.
1987 TC, 5sp, Boport Stage 3 Head/2.1 Cam
1996 Impala SS, DCM, Borla Cat Back, too much other stuff!!!
2009 Pontiac G8 GXP 6M, 6.2l LS3, Kooks Long Tube, Hi Flo Cats, Mild Cam
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Coupedaddy Offline
Member
#34
Bingo! Rubber mallet method worked.  Good thing too, with all the other little stuff (some bigger stuff too) needing attention, I was considering cancelling this project.  But I've really enjoyed this car and I'd hate to let it go.  I'll add a solenoid to all the other spare parts that travel with me.   :-)))       
Thanks again.
Cupddy
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vegas_ss Offline
Senior Member
#35
(09-26-2022, 08:35 PM)Coupedaddy Wrote: Bingo! Rubber mallet method worked.  Good thing too, with all the other little stuff (some bigger stuff too) needing attention, I was considering cancelling this project.  But I've really enjoyed this car and I'd hate to let it go.  I'll add a solenoid to all the other spare parts that travel with me.   :-)))       
Thanks again.

I would replace the solenoid now though as it is most likely going to happen again, especially since it was a new one.  Maybe you can return/exchange it?  Look for a motorcraft one Wink
1987 TC, 5sp, Boport Stage 3 Head/2.1 Cam
1996 Impala SS, DCM, Borla Cat Back, too much other stuff!!!
2009 Pontiac G8 GXP 6M, 6.2l LS3, Kooks Long Tube, Hi Flo Cats, Mild Cam
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