SR20DET not revving past 4.5k rpm - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Shirohige · 07-08-2017, 02:23 PM

Thought that it might be my power fc that was bad. Today I extended the maf wiring and put on my old ecu. Car doesn't start at all. Only cranks and that's it.

S-Nation S13 · 07-08-2017, 04:10 PM

Quote:

Originally Posted by Shirohige

Thought that it might be my power fc that was bad. Today I extended the maf wiring and put on my old ecu. Car doesn't start at all. Only cranks and that's it.

You extended the wires , food for thought did you use the right gauge wire for all the wires. Number one issues with extending the wires on the maf is that people use the wrong gauge wire, which in turn messes up the maf.

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Shirohige · 07-08-2017, 04:12 PM

Quote:

Originally Posted by S-Nation S13

You extended the wires , food for thought did you use the right gauge wire for all the wires. Number one issues with extending the wires on the maf is that people use the wrong gauge wire, which in turn messes up the maf.

Sent from my iPhone using Tapatalk

I had an old harness laying around and the maf wires were extended too. I used those wires on my new harness. Should be okay I guess. But even with bad wiring, the car should start up but run like crap right?

Shirohige · 07-09-2017, 11:36 AM

Alright, found out that with the stock ECU the injectors aren't firing for some reason. Measured the voltage and it was around 6 and slowly dropping to 0.02.

Hooked up my power fc and here comes the weird part; voltage on injectors were 60volts and also slowly dropping How the hell can it be 60 volts? tf is this?

Also, im using a JDM harness. That shouldn't matter i guess? Just clarifying

Shirohige · 07-10-2017, 06:04 AM

Solution found. I'll update my first post in a few minutes.

07-09-2017, 11:36 AM	#34
Shirohige Leaky Injector Join Date: Dec 2015 Location: Netherlands Age: 26 Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	Alright, found out that with the stock ECU the injectors aren't firing for some reason. Measured the voltage and it was around 6 and slowly dropping to 0.02. Hooked up my power fc and here comes the weird part; voltage on injectors were 60volts and also slowly dropping How the hell can it be 60 volts? tf is this? Also, im using a JDM harness. That shouldn't matter i guess? Just clarifying Last edited by Shirohige; 07-09-2017 at 12:30 PM..

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07-08-2017, 02:23 PM	#31
Shirohige Leaky Injector Join Date: Dec 2015 Location: Netherlands Age: 26 Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	Thought that it might be my power fc that was bad. Today I extended the maf wiring and put on my old ecu. Car doesn't start at all. Only cranks and that's it.

07-10-2017, 06:04 AM	#35
Shirohige Leaky Injector Join Date: Dec 2015 Location: Netherlands Age: 26 Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	Solution found. I'll update my first post in a few minutes.