SR20DET Cuts Out - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Donedreamin · 09-28-2020, 06:00 PM

I am stuck and could use some help.

S13 SR20DET
550cc injectors
z32 MAF
s15 turbo
Power FC
255 fuel pump

Went to tune the car, when i'm wide open throttle the car will randomly cut out. Boost drops into vacuum, and AFR's don't change. It does it at random RPMS, but only when full throttle. I can hold my foot to the floor and it will remain cut out, until I come off the pedal and get back into it. I can creep to redline partial. Can't do it full. At idle I can rev the car to the moon. Only under load does it do this.

The tuner says everything looks good on his end, no sensor failures or anything out of the ordinary. I swapped in another AFM, as well as added multiple new grounds. No fix.

S14rebuild · 09-29-2020, 04:43 AM

Is it a hard cut? Like u hit a wall/rev limit

Or breaking up, misfire?

Kingtal0n · 10-03-2020, 01:37 AM

whats the maf voltage when it happens

jedi03 · 10-06-2020, 09:05 AM

check the plugs...to much gap can be blowing out spark...many buddies have had oil leaks that cause continuity issues from coil to plug or coil pack going out...

09-28-2020, 06:00 PM	#1
Donedreamin Join Date: Jan 2009 Location: Saskatchewan Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	SR20DET Cuts Out I am stuck and could use some help. S13 SR20DET 550cc injectors z32 MAF s15 turbo Power FC 255 fuel pump Went to tune the car, when i'm wide open throttle the car will randomly cut out. Boost drops into vacuum, and AFR's don't change. It does it at random RPMS, but only when full throttle. I can hold my foot to the floor and it will remain cut out, until I come off the pedal and get back into it. I can creep to redline partial. Can't do it full. At idle I can rev the car to the moon. Only under load does it do this. The tuner says everything looks good on his end, no sensor failures or anything out of the ordinary. I swapped in another AFM, as well as added multiple new grounds. No fix.

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09-29-2020, 04:43 AM	#2
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Is it a hard cut? Like u hit a wall/rev limit Or breaking up, misfire?

10-03-2020, 01:37 AM	#3
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,648 Trader Rating: (17) Feedback Score: 17 reviews	whats the maf voltage when it happens

10-06-2020, 09:05 AM	#4
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,784 Trader Rating: (8) Feedback Score: 8 reviews	check the plugs...to much gap can be blowing out spark...many buddies have had oil leaks that cause continuity issues from coil to plug or coil pack going out...