Johnboyzx10, I went through a similar experience with serious leaks and loads of water under the footwell carpet, and it was a very frustrating experience indeed.
Sadly, I only found Binty's thread after I'd wasted a lot of time and energy trying to find the source of the leak in my car, which also has no sunroof. To save you time, here is Binty's excellent post which contains a link to another post of his referring to another possible source of leaks. (Volvo don't make sieves, but if they did... they'd look remarkably like a first generation XC90
) My car had the leaking seam, the corroded Anti-Yaw sensor and a totally rusted-to-bits parking brake pedal assembly thanks to a ridiculous amount of water in the driver's footwell. If you follow Bintys' suggestions in the link below, you should solve the problem.
https://www.volvoforums.org.uk/showt...light=bulkhead