'90 Coupe/Redtop SR/Power FC..Starts, Dies. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

kyles1988 · 09-30-2010, 09:07 AM

http://www.youtube.com/v/pKFKHn9MPY4

Little bit about the car.

'90 Coupe
Redtop SR20
300ZX MAF
Tomei 555cc's
A'PEXi PowerFC L-Jetro for Redtop
S15 Turbo

As you can see from the video, the car starts right up, runs for about 1 second, then shuts off.

The Story:

About a month ago I got a new Braille 11 lb battery. I was hooking it up in a hurry and hooked it up backwards.

Things that I have found broken.

- Power FC (several diodes, resistors, a chip fried)
- 75A Fuse
- Ground to coilpacks was questionable.

Things that I have replaced

- PowerFC (brand new unit)
- Ignitor Chip
- 75A Fuse
- coilpack Ground

I have the injectors scaled, as well as the latency set for the injectors. Other than that it is the base Redtop map. On my S14, when I installed the powerFC the car started RIGHT up.

When I test the coilpack harness, I see that I have power to the coilpacks, but no signal and no ground. I have checked all the other fuses, I don't find any that are blown.

When I unplug the MAF, I get no change in how it acts. Same with the TPS. I am getting fuel, I hear the fuelpump prime and the car shoots fuel out the exhaust.

I am at a loss for whats wrong. I've been toying with this thing for a month and can't find anything wrong.

CamryOnBronze · 10-04-2010, 07:55 AM

I'm still baffled by this man... running out of ideas. So weird!

kyles1988 · 10-06-2010, 04:04 PM

Tested the TPS. It's fine. Still have no idea what the problem is.

09-30-2010, 09:07 AM	#1
kyles1988 Zilvia FREAK! Join Date: Nov 2006 Location: Normal, IL Posts: 1,026 Trader Rating: (12) Feedback Score: 12 reviews	'90 Coupe/Redtop SR/Power FC..Starts, Dies. http://www.youtube.com/v/pKFKHn9MPY4 Little bit about the car. '90 Coupe Redtop SR20 300ZX MAF Tomei 555cc's A'PEXi PowerFC L-Jetro for Redtop S15 Turbo As you can see from the video, the car starts right up, runs for about 1 second, then shuts off. The Story: About a month ago I got a new Braille 11 lb battery. I was hooking it up in a hurry and hooked it up backwards. Things that I have found broken. - Power FC (several diodes, resistors, a chip fried) - 75A Fuse - Ground to coilpacks was questionable. Things that I have replaced - PowerFC (brand new unit) - Ignitor Chip - 75A Fuse - coilpack Ground I have the injectors scaled, as well as the latency set for the injectors. Other than that it is the base Redtop map. On my S14, when I installed the powerFC the car started RIGHT up. When I test the coilpack harness, I see that I have power to the coilpacks, but no signal and no ground. I have checked all the other fuses, I don't find any that are blown. When I unplug the MAF, I get no change in how it acts. Same with the TPS. I am getting fuel, I hear the fuelpump prime and the car shoots fuel out the exhaust. I am at a loss for whats wrong. I've been toying with this thing for a month and can't find anything wrong. Last edited by kyles1988; 09-30-2010 at 09:55 AM..

10-04-2010, 07:55 AM	#2
CamryOnBronze Post Whore! Join Date: Oct 2008 Location: MI Age: 35 Posts: 3,913 Trader Rating: (131) Rides Gallery: CamryOnBronze Feedback Score: 131 reviews	I'm still baffled by this man... running out of ideas. So weird! __________________ CamryOnBronze.com

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10-06-2010, 04:04 PM	#3
kyles1988 Zilvia FREAK! Join Date: Nov 2006 Location: Normal, IL Posts: 1,026 Trader Rating: (12) Feedback Score: 12 reviews	Tested the TPS. It's fine. Still have no idea what the problem is.