my car has a hesitation/sputter when im driving around 4k. what would cause this to happen? it feels like it has fuel cut for a brief second! the only mods i have is emissions removed, and full exhaust and a cone filter. idk if any of that would cause it to happen.

 

This is the '86 RX-7 seen in the public profile?


Mario III

 

3800 RPM hesitation. It happens when the primary & secondary fuel injectors don't transition properly. You should feel it under partial throttle acceleration, but it'll go away at WOT.

If you've got an '86, then the fix will likely be simply adding another ground to the pressure sensor. Splice in an extra wire and bolt it to the body. This was in one of Mazda's technical service bulletins.

 

would you be referring to the one i have in my avatar? or in my intro thread?

 

thanks for the info! that is what im looking for!