- Joined
- Oct 23, 2023
- Messages
- 4
- Reaction score
- 3
- Location
- Tacoma
- Vehicle Year
- 1994
- Make / Model
- Mazda b4000
- Transmission
- Automatic
Ok brain trust, I have a Mazda b4000. 4.0 V-6 automatic. Took it into the shop to have a valve job done. Afterwards the shop states it fired right up then quit. They started throwing parts at it.. new fuel pump, fuel filter, all new fuel injectors, m airflow sensor, crankshaft position sensor and a host of other sensors and all relays, then replace twice the ECM, no luck so they ordered a specially programmed ECM programmed to the serial number. After four months in the shop I had it towed home. When I put my code reader on it the reader gets no signal or power to come to life , the reader is getting no power. This explains the no spark issue. Fuses are good, relays are new, diode is good, I am not good and going nuts. Please throw some ideas my way. The no power to the code reader when everything is hot makes no sense.