B2200/B2000 Electrical Problems All of the B2200/B2000's in the U.S. where made between 86-93 which makes them about 15-20 years old. Any vehicle this old is going to have some problems especially with wiring. Hopefully this article will shed some light on the most common failures found in these models.

Heater / Blower Motor Typically if the blower only works on some of the settings the resistor pack mounted on top of the blower motor housing is going bad. This can be the switch in the dash but not likely. If the blower works sometimes and not others, seems to turn off at random or may work after hitting the dash, usually that is a bad connection goint to the blower switch. A slow blower can be a bad connection in the wiring or just the blower needing maintenance or replacement. The voltage going to the blower motor is only 12 volts with the setting all the way on high. The switch uses the resistors to lower the voltage going to the motor which slows it down for lower settings. Engine Related O2 Sensor: If the O2 sensor has never been replaced it will respond sluggish to fuel mixture changes if it responds at all. When this happens the computer will go into limp home mode and start running rich, the same happens if you do not install it on a new header. If the O2 sensor checks ok or has been replaced check to see that it is plugged into it's green connector and that the terminals are not corroded. Good voltage readings are between .3 and .7 volts after the engine is warmed up. Thanks to dean s, Cusser, Barnes, and mazdaug for their help on this article.