just recently my car has been surging for a while and then it will stop.today i went to the store and it didnt surge at all and then when i started the car to leave it started to surge what is making it do this.

Oh yeah it was doing this when i first installed it and then got it tuned and it fix it for a while and recently it just started to surge out of nowhere.

any help is appreciated thanks,

 

Same old problem of too much air. Reduce idle air intake down a little. 1/8 turn of TAS (aka throttle set screw) on page F-17 or 1/4 turn of the AAS (aka air bleed screw) also on F-17 of the manual.


Reset the ecu when the engine is cold, start engine and let it sit and warm up and relearn.

If this does not help maybe the TPS voltages are off.

 

thanks but what is page f-17 of what manual.where is it exactly located not sure.

 

That is the Mazda RX-7 Maintenance Manual, the bible for this car! Section F page 17.