Greetings, from the Philippines. I own a 1991 XCAB 4X4 Pick Up (3VZ Engine) which I maintained very well since acquisition. Recently, its idling has gone down to 5,500 RPM, and lower if the AC is turned on. Unfortunately Toyota has stopped servicing vehicles that are over 10 years old. So I have to resort to this forum hoping I could get help from anyone out there. Any assistance will be greatly appreciated.

Thanks