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View Full Version : RB25DET in S14 issue


Brok3n_RB25
12-03-2011, 08:47 PM
Ok, so I usually don't like asking for help on these types of issues. I love the process of diagnosing problems, but I can't figure out what this problem is for the life of me.

The car runs fine 99% of the time, but I'm having a ghost issue.
The car cuts out randomly. I haven't been able to link it to anything (load, fuel level, etc.)
It basically loses all power for a split second. Sometimes the car dies, sometimes it's not long enough for the car to die.
I still have full power in the car (gauges and everything).
Sometimes if I blip the throttle, it fixes "it". Sometimes it doesn't.
Nothing shows up on ECUtalk via Consult cable. No codes. No murmurs in the readings. Nothing.

I'm at a loss. One thing I've noticed is that sometimes when it cuts out, I get a little backfire.

Sooo, I'm thinking it has something to do with Ignition. The fuel is still getting there, giving me the backfire.
What could cause all 6 coil packs to cut out simultaneously, though?

Please, feel free to correct me if I'm wrong. I've had this problem for a while, and it's better now that I rewired my whole engine harness. It's still there, though. Only thing I can think of is a ground problem, but I just don't know where to look.

Any ideas?

Sileighty_85
12-03-2011, 08:50 PM
I had the same problem, Mine was a Bad MAFS.

I replaced it and havent had an issue since

Brok3n_RB25
12-04-2011, 05:48 PM
That's the thing, though. I'm not seeing anything on my scan tool.
It datalogs at 10 frames per second, and i don't see any sensors cutting out.
I'm baffled.

silver350z05rb
12-04-2011, 11:08 PM
the maf could be ON its way out, try another maf,could also be coilpacks,pull out all your spark plugs and make sure the tip is still on them, if one breaks off or gets burnt off, it will do that, also make sure its not overboosting when it does that cut off, if you are boosting too much and your not set up ECU-wise for alot of boost, it will cause that as well PS i also have some aftermarket SplitFire Coilpacks for sale....For S1 rb25det,rb26,rb20 motors only not S2 rb25det

marcs13r32
12-05-2011, 05:10 AM
its got to be the MAF!!!!