Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post

einherjar · 05-04-2005, 04:12 PM

FACK! so the problem wasnt fouled plugs, ... becuase the problem came back. ... is there anyone out there who can help? do i have a problem that is beyond zilvia members abilities?

Here is the problem again.

The car idles fine, but once its driving ... normally after a min or so, it starts sputtering really bad, then it will stop accelerating and the engine goes quiet like there is no fuel, or, no spark, then once i let off the gas it goes away, or if i hold the throttle, it may come back. Latey, the car feels less powerful, something is not right. Also, when i had this problem before, warmer weather made a large improvement.

What ive done.

Changed the plugs, re gapped them to .031"
Checked the wiring to the fuel pump
Checked the ECU code, its reading 43, TPS, but the car should run without the TPS, so i unplugged it and the car had the same problem ... so i plugged it back in.
Changed the MAFS
Checked MAFS wiring, and TPS wiring
Checked for vacuum leaks
Added new grounds and cleaned up the old ones.
Changed the fuel filter
Unplugged MAFS, can ran even worse ... so plugged back in

What i plan to do
Check the MAFS wiring completely, from MAFS to the ECU.
Check the timing on the car ... but i dont understand why the timing would be off, unless shit happened internally ... :O

... anyone have at least ideas?

05-04-2005, 04:12 PM	#9
einherjar Zilvia Member Join Date: Jun 2003 Location: Ontario Posts: 179 Trader Rating: (0)	FACK! so the problem wasnt fouled plugs, ... becuase the problem came back. ... is there anyone out there who can help? do i have a problem that is beyond zilvia members abilities? Here is the problem again. The car idles fine, but once its driving ... normally after a min or so, it starts sputtering really bad, then it will stop accelerating and the engine goes quiet like there is no fuel, or, no spark, then once i let off the gas it goes away, or if i hold the throttle, it may come back. Latey, the car feels less powerful, something is not right. Also, when i had this problem before, warmer weather made a large improvement. What ive done. Changed the plugs, re gapped them to .031" Checked the wiring to the fuel pump Checked the ECU code, its reading 43, TPS, but the car should run without the TPS, so i unplugged it and the car had the same problem ... so i plugged it back in. Changed the MAFS Checked MAFS wiring, and TPS wiring Checked for vacuum leaks Added new grounds and cleaned up the old ones. Changed the fuel filter Unplugged MAFS, can ran even worse ... so plugged back in What i plan to do Check the MAFS wiring completely, from MAFS to the ECU. Check the timing on the car ... but i dont understand why the timing would be off, unless shit happened internally ... :O ... anyone have at least ideas? __________________ ~SR20DET~, Side/Top mount I/C, HKS bov,Intake,CP Racing tri-strut bar, retourqued p-plate, custom 5 puck CP racing clutch disc.