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Power FC problems (sr20)

Shirohige
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Shirohige Newbie

Shirohige

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Power FC problems (sr20)

Hello guys, I am new to this forum. I am just your average 21 year old dude who bought a Nissan 200sx S13 with a SR20DET and I did some modifications. I assume this is gonna be a long post, but please bear with me. :(

So I started my car after 1.5 years and during those months I bought several parts. (Apexi Power FC Djetro, S15 turbo, 555cc nismo injectors and different things but that wont matter)

Anyway, 2 days ago I started her up and it went great, except for getting the car to idle. It just WON'T idle at all. I found out that my injectors had the wrong latency. I did 66% and 0.72ms and it should've been 66% and 0.10ms? So I changed that and after a few resets and start ups it went great.

First 10 minutes idle, amazing. 800-900rpm, car not shaking. Then I had to turn on the A/C which I dont have. I thought using the climate control and do some cold air would do the trick. Well I guess not. Car was doing weird things. 480rpm-900rpm over and over, here is a video; https://www.youtube.com/watch?v=GZXVeiSi1y0

I don't know what to do. :(  My map sensor and IAT are working fine. The car was idling fine but I had to complete te self-learning process. My defroster doesn't work either because some cables are missing. (I found some cables so I am gonna try it out tomorrow, it might work)

Other things that you guys might find interesting; My O2 sensor stays at 0.0v, even at idle. I found out today that there is a fat O2 sensor in the elbow, and the redtop ECU uses a Skinny O2. (I had a black top ecu, so this is why there is a fat o2 in there. Black top = fat o2 || redtop = skinny o2) Can it be because of this? How much influence does the O2 sensor have when it comes to the self-learning process?

Also, the car starts with boost control on. And I don't even have a boost controller. (I turned it off) 

My mod list:
555cc nismo
gt28 turbo
Apexi Power FC D-jetro
Apexi powerfilter
aftermarket IC
HKS wastegate
Mishimoto rad
AEM Wideband (haven't hooked it up yet, I don't know much about this thing. But it was necessarry for tuners?)

Edited by Shirohige
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GTSBoy Grand Master

GTSBoy

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My thoughts are that it shouldn't matter if you don't have the stuff hooked up that would cause idle load to change.  Just get the ECU to learn through it doing nothing, and it comes out the other side not GAF about those things.

I concur on the O2 sensor & feedback being vital.  Once you get past cold start you need it working, or you need it tuned to ignore it properly.

Shirohige Newbie

Shirohige

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6 hours ago, admS15 said:

Is the 02 feedback on? Same area where you turned boost control off. Can't you just do the idle learn procedure and not bother turning ac or demister on?

I can try. Yes, the feedback was on. All 3 or 4 times te feedback has been on.

3 hours ago, GTSBoy said:

My thoughts are that it shouldn't matter if you don't have the stuff hooked up that would cause idle load to change.  Just get the ECU to learn through it doing nothing, and it comes out the other side not GAF about those things.

I concur on the O2 sensor & feedback being vital.  Once you get past cold start you need it working, or you need it tuned to ignore it properly.

Hmmm, ill try what admS15 said. If it won't work i'll look for another o2 sensor.

Yesterday the car had a really strong gasoline smell. I could even smell it in my exhaust pipe.

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