Thread: '37 Dodge sedan

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Does your compressor freeze up when it starts sometimes? Mine used to do that and it would trip the breaker, I just had to change it's start capacitor and it was good again.

Originally Posted by v8nutz

Does your compressor freeze up when it starts sometimes? Mine used to do that and it would trip the breaker, I just had to change it's start capacitor and it was good again.

Sometimes it struggles to get the pump spinning on start up, but usually it builds pressure until the tank is nearly full pressure and it trips the breaker at that point. If I let it sit for a while it will usually start right back up after resetting the breaker.

I'm fairly certain the cap is weak, but the motor is from '84, if it's the original motor, so I'm thinking it's just time to replace it all together.

Originally Posted by PNW Rodder

Sometimes it struggles to get the pump spinning on start up.

That sounds like the un-loader valve. It should allow the motor to come up to speed before engaging the pump head.