Driveshaft Problems of Mazda B4000

This truck is manufactured by Ford, it is identical to the Ford ranger with the exception of a few exterior body panels. This truck has a mechanical flaw in the drive line that feels as if the transmission bounces or "thumps up and down" when moderately accelerating from a stand still. My service center has attempted 4 repairs as per Mazda service bulletins, all have failed. Each time I contact my service center regarding a repair solution I am told the same thing" Mazda is working on a fix". I have contacted Mazda customer service numerous times and gained no information. I have been researching the characteristics of this defect. In a very short period of time I have located other Ford ranger owners with the same problem, some models dating back to 1994. When they turned to Ford for a repair, they too were put aside. What alarms me is NHTSA has many bulletins where Ford acknowledges my same complaint, some bulletins dating back to 1997 model year. I firmly believe that Ford has sold 100's to 1000's of ranger and ranger equivalents with this design defect as first quality, while knowing they are not. Today, sept. 18,2000 a Mazda representative has contacted me for the first time since this problem began. He said they do not know how to fix it. I need help in directing Ford to aknowledge this problem and release a fix. I have tolerated this defective vehicle for 25000 miles and I am approaching the end of my warranty. Another concern of mine is what long term effect this will have on other related components. Please help in anyway possible.

See all problems of the 1999 Mazda B4000 🔎.

Truck shudders 4 to 5 times coming to a complete stop and taking off from a complete stop all the time and occasionally also shudders in 2nd gear[truck is an automatic]. This has occurred since the 1st day I picked up the truck. It has been back to 2 different Mazda dealers after I had the transmission checked by an independent shop which gave the truck a clean bill of health and then took to independent shop for a diagnostic check where they found the problem to be the driveshaft. With this info I went back to Mazda where they regreased and repacked the driveshaft. The problem continues. I called the repair shop after I picked up the truck and told them the truck was still doing the same only now worse. I was told that they called in the dsm for the area Mazda dealers and he stated this was a "characteristic" of all the B4000 series and nothing more would be done. I have the extended warranty of 6yr/100,000 and if I take the truck for repair by other than Mazda then I will ify this warranty. I don't know what else to do. The problem is very annoying especially in any stop and go traffic[city driving inparticular] all I want to do is have the truck fixed. Any info or help in this matter would be greatly appreciated.

See all problems of the 1998 Mazda B4000 🔎.