well here is the scenario the car starts but the idle jumps between 1 and 2 thousand rpms and when i give it gas it dies out i have an ecu for a 98 dx but am now having to get an obd 2 ls ecu because of the fact that the b20 doesnt have a crank speed sensor well anyways i have dsm injectors wired with inline resistors (running very rich) my friends think it is either need to tune afc, tps gone bad, the ecu, or the injectors are wired wrong but i want to get some more trustworthy opinions on my troubleshooting. if u have any ideas about what is causing my problem please help. thanks

 

Check your spark plugs and see what color they are. You may be running WAY too rich at idle which is a causing the motor to die.

As for the RPM surging, make sure there is no vacuum leaks (intake manifold gasket, throttle body gasket, etc) and no vacuum line leaks, with the MAP sensor reading accurate! This means the vacuum line or the sensor is working proper.

Also make sure the TPS and the MAP sensor plug is not backwards.

 

tune

 

This was from 2003! I'm sure the OP has it fixed by now.....