I've replaced all lines, reservoir, and I'm on my third PS pump. One off eBay, one A-1 Cardone remanufacted from RockAuto, one that local mechanic put on. Still leaking from under/backside of pump somewhere. A few drops each night. Any suggestions?? Please help. It's driving me insane!

2001 CL S-Type -- 226,000 miles

 

Did you replace the o-ring in the supply line fitting? It should have been in your new PS pump assembly. #17 in the link:

https://www.acurapartsdiscount.com/o...QtYXV0b21hdGlj

 

Make sure to use only OEM Honda / Acura fluid from the dealer. Very important. Other brands will wreck the seals.