hi hoping someone can help 92 mazda b2600i will start but will not idle or rev up the only way it will run is with very slight pressure on gas pedal . if you give it more gas it dies if you let off gas it will die .
any ideas !!!!!!!!!
have replace o2 plugs cap rotor wires & coolant temp sensor, fuel filter also tried a diff dist assembly .
non of this helped

 

idle air bypass valve is faulty...needs to be replaced asap

 

IF THAT WAS BAD COULDN'T I STILL BE ABLE TO REV THE MOTOR UP ?

 

Has the ecm ever been repaired? Go to this link http://www.avproecm.com/
Then to the Print Postcard link at the bottom right. I had asimilar problem.This guy repaired the ecm and then it ran fine. Good luck.