Well, Mario, sorry to see you go, but I totally understand where you're coming from! These cars just didn't live up to their expectations.
In my case, I'll stick it out for a while longer, as I got it real cheap and learned to live with it's shortcomings. I drive locally in 3rd gear, to avoid the dreaded P0783. If I need 4th, like on the freeway, I'll keep it in 3rd until I hit 55ish, let off on the gas then shift into 4th, watch the tach until the revs lower, indicating it's shifted, then apply throttle gradually. No problems after that at all
as long as I don't let it downshift or upshift automatically!
Took a bit of practice at first (driving around with my OBDII scanner on my lap, so I can pull over, clear the code and switch the ignition on-off thrice to cancel the godforsaken limp home mode), but the stubborn little car just kinda grows on you, y'know? Someday I'll find a good semi-compatible donor car (NOT GMDAT!!!) and swap the engine/tranny out for something more worthwhile! I hate suzuki for what they've done and will NEVER buy or recommend another suzuki. Won't even bother capitalizing it, even. -My '86 Samurai tintop stays, though! It's worth it's weight in gold!
Anyways, I want to thank you for all your help and wish you the best of luck! Take care!