Here is a brief rundown of what i have: single turbo, Power FC, Twin Power, 550s and 2000cc injectors, fuel pressure, oil pressure, water temp gauges.

All of the above was recently installed when i replaced the engine and now when trying to start it for the first time it cranks but will only run for 2 or 3 seconds before shutting down. It cranks and idles, i can even rev it, but it dies everytime after a couple seconds. No matter if its idleing or if i am revving to try to keep it running it dies. I have ohmed out every single wire running to the Power FC and everything has continuity and the fuel and ignition system are working, well at least for a few seconds they work. One thing is my Aeromotive FPR is at 85psi which i know is double what it should be, but i have the regulator adjusted all the way out so it may be defective. Would that cause injectors to malfunction? Is there a way to check timing on an FD?

 

...why is your fuel pressure at 85?
maybe your fuel pump is cutting out at that pressure and fuel pressure is dropping.
also check the voltage at the fuel pump.

You could also check the wiring harness for damage. Sounds like something is shorting out.

 

afr gauge????

 

the pfc commander lets you check timming i doubt thats it if you still have the oem fpr try eliminating that aftermarket one , also are you sure the return line is routed correctly?

 

Yes i have a wideband and a boost gauge i forgot to include in the OP.

The lines to the fpr are routed correctly, i double checked that. But I have never used a power FC before so i have no idea what the correct values should be for injector cycle or ignition timing or anything else.

 

Are your 550 the OEM? If so here are the values;

16v - 0.528
14v - 0.728
12v - 1.008
10v - 1.368
8v - 1.968
6v - 2.800

Please keep in mind this is running lower fuel pressure, around 40psi - 43psi. Your 2000 are Bosch EV14 or ID's?

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So let's get this straight... You added all those mods and did NOT tune it/have it tuned? So you're in the process of tuning. I don't mean to sound like a dick just trying to figure out what's going on. If you are tuning you might want to have a moderator move it to the Power FC section.

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I have oem 550cc and ID equivalent 2000cc secondarys. Are the above values what i should see on the power fc?

 

Yes i added all these parts with no tune. From what i have read you can add the parts, start it, then let it do an idle learn, and then take it to get it tuned. I just cant keep it running past the 2 or 3 second mark.

 

Okay, so what are the afr's for the brief 2-3 seconds? Im wondering if its flooding itself. Considering the increased fuel pressure you're going to want to run half the fuel. Otherwise you could figure out what's wrong with your fpr. The two side ports on the fpr hold pressure while the bottom port is the return line. If that is correct maybe you got the hard lines mixed up or something.

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Fix the fuel pressure, and then continue from there. Otherwise your just wasting your time.

What your describing actually sounds like its too lean despite the fuel pressure. Are the 550's stock or aftermarket?

thewird

 

They are stock and i had them cleaned by Witch Hunter before installing them. Yea i am working on the fuel pressure.

 

^That, and what fuel pump? Rewired?

 

I have a Supra pump on stock wiring. I have the rewire kit but havent installed it yet. I just pulled the feed line of the secondary rail and fuel is flowing well with key on. I dont have the fuel resister installed, would that cause any problems?

 

The resistor manages the current to the pump during idle and light load conditions.

 

Supra pump on stock wiring = very bad. Get that rewired with 10 gauge wiring straight inside the tank. Not that its possibly your problem but just letting you know.

thewird

 

Sensor sw check. Possibly map

 

What does SW stand for? I have a 3 bar MAP sensor that I have checked the wires to make sure all three are connected.

 

Did you calibrate the 3 bar map sensor in the map? (this can only be done with a datalogit)

thewird

 

No i did not. I wasn't aware or forgot it had to be calibrated. Could that cause what i am experiencing now?

 

HUGE YES. (also fuel pressure)

thewird

 

Put the stock map sensor back in for now, that's why it won't run, it's not calibrated into the power fc, you have to find out what the settings should be changed to in the power fc for it to work with that map sensor and you need datalogit to do that or let the tuner do that, fix/replace the fpr, and you never answered what is your air fuel ratio from the wideband while its running for those 2 seconds? just out of curiosity.

 

I agree with both inputs, here is the setting you or your tuner will need.



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3 bar takes a different scale, you have to use the data logit. It will do this exact thing if you have the incorrect scale for 3bar/2bar map.

 

Additionally. How much boost are you running? Need it tuned with the 3 bar map anyways if you are running enough boost to justify it. Otherwise it's useless and a waste of money.