Hello! I’m a first time poster but long time reader. I have a pump that seems to be running but there is no water flow whatsoever. The pump is 20 years old and has had lots of capacitor problems (replacements) and is very difficult to prime. I’ve already replaced the capacitor. I’ve checked the drive shaft and it is spinning but no flow. I’m looking to replace the entire pump and considering doing it myself. The existing pump is a Challenger 2.0HP single speed. That model is discontinued and the updated energy efficient version is very hard to find. I’m considering replacing it with a different 2.0 - 2.5 HP pump. I was wondering if anyone had any experience with this and the process of adjusting the plumbing and wiring with a completely different pump. We have a very old Jandy box that has the wired push button panel in the house. I’m pretty handy with PVC and electrical wiring.