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by scott
(new jersey)

i have the 90234 air compressor from harbor freight. i have used it quite often for over a year. i have even pushed it multiple occasions running it nonstop for hours without a break.

yesterday while using it with my sandblaster the air compressor thermal overload switch popped and the compressor died.

Harbor Freight 90234 air compressor
Harbor Freight 90234 air compressor

i restarted it to only have it run for about thirty seconds before it died again.

Figuring it needed a rest i left it alone. today i went to start the compressor only to have it run for another thirty or so seconds and just cut out, it didn’t even fill the tank.

The oil and its level seemed fine.

Is it possible my motor is dying. i have it on a power strip all by itself connected to an outlet without anything else and i never had this problem before even when running the compressor for hours at a time.

I am going to check tomorrow if there is a restriction of some sort in the copper line. if i can get any advice i appreciate it. thanks


Scott, I don’t know what the Duty Cycle of your model of Harbor Freight compressor is. If you are not sure what I mean by Duty Cycle, see the page of that name linked from the sitemap page for complete info.

I think, reading between the lines, that you know that you have abused the compressor. If, in fact, it is not a continuous duty compressor, from your own admission, you have run it long and hot, and I suspect, this has damaged your motor, if not the pump.

Sounds like you have had your money out of this one, and since, I suspect, that replacing the motor may only solve on of the issues, it may be time to retire this one for parts, and get another.

To be sure, find an electric motor rebuild shop, and take the motor there for a load test.

Cheers and good luck.

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