73 convertible top Slows down then stops starter then the Starter motor relay clicks

Clue

New Member
Sep 10, 2020
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61
Wisconsin
My ‘73 ‘stang convertible top starts to go up, slows down then stops you can hear And feel the starter motor relay Click. then no movement until the relay clicks again then you can lower it back, sometime the relay will click and top will stop. Relay will again click and you can finish putting it down.
 
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Clue

New Member
Sep 10, 2020
7
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61
Wisconsin
It is all original only 15,000 miles on car was in Az from around ‘85 until this year. Original a Wisconsin car brought it back.
 

Clue

New Member
Sep 10, 2020
7
0
1
61
Wisconsin
So 47 years old but limited usage witch can also be bad, been doing working to get it running after sitting so long.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
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The first thing I would do is identify the positive and ground wires for the motor. Feed 12 volts directly to the motor and see how it does. If it seems healthy then you can look at the relay itself as the next possible suspect.

Also: Check the fluid level in the pump/motor and ensure that it is properly serviced (I don't actually know off the top of my head if there were any style other than electric-hydraulic).
 

Clue

New Member
Sep 10, 2020
7
0
1
61
Wisconsin
The first thing I would do is identify the positive and ground wires for the motor. Feed 12 volts directly to the motor and see how it does. If it seems healthy then you can look at the relay itself as the next possible suspect.

Also: Check the fluid level in the pump/motor and ensure that it is properly serviced (I don't actually know off the top of my head if there were any style other than electric-hydraulic).
 

Clue

New Member
Sep 10, 2020
7
0
1
61
Wisconsin
I filled the fluids first, and bleed it, no bulbs in lines. I just ran 12 volts direct to it and it went about 1/3rd way up and stop, previously it was going 1/6th of the way before stopping. My thought it is the pump, but seams strange to me.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
29,096
10,903
224
Box behind Walmart
www.stangnet.com
I filled the fluids first, and bleed it, no bulbs in lines. I just ran 12 volts direct to it and it went about 1/3rd way up and stop, previously it was going 1/6th of the way before stopping. My thought it is the pump, but seams strange to me.


Maybe not so strange if the internal contacts are corroded or the motor brushes require replacement. If it's never been rebuilt, it's a pretty good bet it's the brushes. It's just not generating the torque it once did.

Look in your area for an alternator/motor/pump repair shop. That is probably your least expensive route assuming you are able to remove and reinstall the pump yourself.