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1983 280zx n/a 5-speed t-tops
57 Posts
Just a couple things to get the discussion going: have you/can you check timing - ensure timing advances properly with RPM. Check vacuum and vacuum response with RPM. Check operation/condition of the cylinder head temp sensor. Is the car equiped with california of federal emissions? Each has several vacuum operated devices. Theres also an altitude switch that affects the ECU but I dont think you should be affected by that.

Or, could be in the fuel system. Check fuel pressure under different RPM. Fuel restrictions, blockages in the fuel or evap/vent lines. Check fuel pressure regulator operation under vacuum.

Thats not all but should give more clues.

Can't remember your experience with the S130 so let us know what you find or need help finding.
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