I bought a Holley red pump, rebuilt from an ebay seller. It was a good deal, so I just bought it to keep on standby, and it didn't have any instructions with it.
Well, I finally ended up using it and it only works for about 5 min then shuts off. Then after it cools for 1/2 hr or so, it works for another 5 min, then shuts off.
I'm just wondering if there's something I did wrong with the wiring? I just connected + and - to it, that's all.
Does anyone have an explanation for this trouble?

Thanks

 

Is there a relay/circuit breaker hooked inline or is it straight to the battery? If one or the other it's possible they are just over heating. I went through numerious cheap relays until I finally bought a $20 Bosch unit that's been great ever since.

If straight to battery/ground possible impeller contamination, remove bottom cover to expose area where impellers are to see if debris is stuck/hindering operation.

Or it's just possible the motor itself if going south, hence buyer getting rid of it touting "rebuilt"...happens all the time.

 

Thanks IHI
I'll take it apart to see if there's something I can find.
I have a feeling it's the motor.