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Old 09-30-2010, 09:07 AM   #1
kyles1988
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SR '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..
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Old 10-04-2010, 07:55 AM   #2
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Old 10-06-2010, 04:04 PM   #3
kyles1988
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Tested the TPS. It's fine. Still have no idea what the problem is.
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