Water pump OEM Toyota or GMB

GMB is a decent pump.

I replaced both mine and my dad's with GMB. Mechanic recommend it too. So far so good.

Had a friend rebuild his 22RE, guy ordered his parts from eBay. Parts to replace which I believe is a must, water pump, t-stat, oil pump, timing chain and tensioner.

I have their water pump on my Rx7, it's been A-Okay for over 3 years.

Excellent time to learn to do it yourself and buy a $65 water pump and timing belt kit. Dirty cheap for the miata. Just find a kit with a GMB water pump and a name brand belt.

Over the weekend this is how I did the water pump. I didn't have 2 hydraulic jacks, so I had to come up with some other idea. When I took out the water pump, I think the seal was starting to leak. Cleaned up area and reinstalled with new water pump.

I've used GMB some 10+ years ago. They were made in Japan and came with a lifetime warranty.

Sounds like your water pump is shot. The impeller is spinning on the shaft and not pushing the water. I just had a customer who had this problem. The crazy thing is, I just replaced the pump about 2 years/30K ago with a GMB pump. He had the exact same symptoms as you: car gets hot, but does not overheat, no water through the return line, and fan takes a long time before it turns on.

Melling and Aisin are both premium WPs. Airtex is pretty good. GMB is ok.

I put in a GMB in my '02 two years ago, and it's leaking already.