2003 Mazda B3000 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Mazda B3000

Water intrusion into a connector located under the cab, beneath the driver's seat, can cause a rough idle, erratic speedometer operation, ABS Light and Check Engine Light illumination, and automatic transmission shifting problems. If needed, connector repair parts are available from Mazda dealers, and possibly some Ford dealers.

The Check Engine Light may come on and the engine will run poorly. During diagnosis the technician may find a trouble code for the Camshaft Position Sensor (CMP), P0340. It is recommended to check the CMP driveshaft for looseness in the housing because if the shaft is loose, a new sensor will be damaged again. If the shaft has play, the CMP sensor and housing unit will need to be replaced. Our technicians recommend using the factory type timing tool for the replacement procedure.

The engine may fail to start due to an electrically shorted sensor. Some of the sensors may internally short and not blow any fuses. A technician may find no spark and no operation of the fuel injectors in the diagnosis. One way a technician may isolate the defective sensor is by disconnecting sensors one by one to see if the engine starts.

See More Problems 5

When trying to start truck it 1) cranks right up perfectly, 2) turn key and start is slow like starting with a bad battery but kicks over and starts 3)has a contious clicking noise, won't start 4) does not start have to push/ or jump start fires right up though. Have check most of the norma...

I am a Saturday mechanic. My truck has been on the fritz for a few months now so I let it sit for about 3 months with not starting it.

I had problems with my truck running rough and a cylinder misfire. I replaced the dist. cap and plugs and cables but still giving a misfire. I also had chocola...

See More Questions 29

MAZDA IS RECALLING MODEL YEAR 1995 THROUGH 1997 AND MODEL YEAR 2001 THROUGH 2003 TRUCKS EQUIPPED WITH TEXAS INSTRUMENTS SPEED CONTROL DEACTIVATION SWITCH (SCDS) AND/OR ANTI-LOCK BRAKE SYSTEM (ABS) AND MANUFACTURED ON OR BEFORE DECEMBER 5, 2002. A COMPONENT OF THE CRUISE CONTROL DEACTIVATION SWIT...

See More Recalls 1

decent truck

This truck has been the best I have ever had . It has 105000 miles on it & I need only to put on a PCV valve. I need to know how to do that.

See More Reviews 2