Default [Q] Bluetooth Issues

Hello, i'm having issues with the bluetooth on my MB860, STOCK GB 2.3.6 rom, does not pair with my car system at all, and isn't the car stereo problem, since a SK17i with GB 2.3.4, an Motorola DROID II (Milestone) with GB 2.3.6, and a RAZR i with Jelly Bean, pairs without problem.

I've had also some issues pairing it with my Garmin GPS.

Any workaround for this kind of issue?

Thanks y'all.