Leaking Transmission cooler lines now transmission jerking

I been having issues with leaking lines from my transmission cooler. I been tightening for a long time but keeps on leaking. I always check the fluid level but it says it has enough. Now my 1998 4runner 4cy around 0-15 jerks or lag on shifting. Other than that my car run good. I know how to work on car pretty will replace the spark plugs, new manifold gaskets, throttle body gasket, new egr gasket. I also cleaned up all carbon build ups on them. I still need to run codes but no check engine light for me. If you have any ideas please or experience with this please send me some tips to fix it.

 

Yes, I check again today and it was on low so I bought more and I’ll be putting it on today helpfully the solve the issue

 

Constantly tightening something is not a fix. Figure out why its not staying tight.

 

It fix it but now I’m worried how much wear it did to it, was missing 2qts of fluid. Was driving it for a week

 

Well you were short about 1/4 the correct capacity.

Its 26 years old just drive it til it dies. We won't know how much damage is done over the interwebz.