I've always had this problem since I started playing LSPDFR. When I'm not in LSPDFR, police3 is the only police car that spawns when I have a wanted level. Does anyone know why this is happening?

Pretty sure this is just how the game was made, but I may be wrong, don't quote me on that :)

Yeah, somehow when you install LSPDFR it makes only Police3 respond. I remember everything responding before I got LSPDFR.

You could Edit the dispatch.meta and add the other police cars.

Or you could Edit the popcycle.dat and add VEH_COPCAR 02 at the end of every line except for the POP_SHEDULES beginning with "NET". That would make police1, police2 and police3 spawn naturally in the traffic. I hope you unterstand what I mean.