i have search rb problem

[rb26tommy]

well i have a rb26 and when i hit about 3000 rpm it falls on it face and i can here the bov/surge of air coming back up the turbo inlet going off as i am on the gas. it feels like it missing. i all so cant get on it because i start fouling out plugs. if u guys can help. i check the coil pack and it reads 0.09ohms. please help guys.
Modified by rb26tommy at 7:57 AM 1/1/2007

[Yellow4g63]

Kinda sounds like a bad maf. Have you tried unpluging them and see if still dose the samething? might be in fail safe mode.

[rb26tommy]

i try that do i just unplug one or both of them. I also have a pfc and i check the maf and it reads 1.00 on one and the other reads .89 it moves around. should it read the same or different from each other. thanks

[Yellow4g63]

Not sure I only have onr maf on my rb20.

[Carl H]

the maf voltages should read close to the same.

[rb26tommy]

ok thanks i check it again. i plug the maf plug on number one and it died same when i plug the second one to. does that mean the mafs are good.

[skillzilla]

If you unplugged one of the mafs and the car ran exactly the same then that may be your problem. The only trouble with unplugging sensors to find an issue is a car will sometimes only run slightly worse, so it leads to a lot of false diagnosis. its kind of like going around your elbow to get to your butthole.

[rb26tommy]

thanks i keep that in mind. what about the falling on it face around 3000 rpm can you help me with that.

[skillzilla]

That could be abything really. Ive never worked on a 26 before but if its similar to the other RB motors Id check the usual suspects: MAFS, CAS, TPS, Knock Sensors, Coolant Temp Sensors, etc.

Also, try cleaning both MAFS with brake cleaner and q-tips, but be really gentle. A dirty mafs will still show voltage but under laod it will jump around all over the place, giving your ECU mixed readings.

Also, have you checked for boost leaks?

[Cpt_Impossible]

Is this problem only while driving or while sitting at a stop and revving too?

[Yellow4g63]

I don't think your suppose to use brake cleaner on elterical parts. They have cleaners for MAFs at the store. Next thing to do is check the ECU for codes, If the check engine light is not wired up you will have to pull the codes off the ecu by the flashing led on it.

[rb26tommy]

IT DOES IT WHEN I AM DRIVING. AND I HAVE A POWER FC.

[Yellow4g63]

WTF ARE YOU YELLING AT US?

Unless it's so modified that you can't run the stock ecu you should prob find someone that can help you. There really isn't enough info here, to try and doing it a psychic internet diag.

[rb26tommy]

WHAT IS YOUR PROBLEM MAN NOBODY IS YELLING. ALL I AM TRYING TO DO IS GET HELP LIKE ALOT OF PEOPLE ON HERE. SO CHILL OUT.

[nissanman04]

caps lock FTW

[rb26tommy]

some time when i type i hit the cap lock button.

[gawdzilla]

plug gap? ignitor? coils? rich/lean? maf?

could be anything

[rb26tommy]

plug gap is 0.08mm and coil reads on the meter is 0.9 ohms clean the mafs and running rich and havent check the ignitor yet i do that right now thanks guys