Jump to content
SAU Community

Recommended Posts

Hello Genies,
I need help,

I have an r33 RB25det series 2 Manual.
After driving for 30 minutes the car begins to stutter hard unless i feather the throttle real soft will feel like it's missing.
If I floor it in neutral it bounces from 3k revs up to 4k and won't hit redline. Feels like the engine is rocking a bit but that's probably because I am trying to rev the balls off it 
When driving once it hits 3 k revs the car will start bouncing back and forwards hard and a popping noise will come from the exhaust like it's running rich. This will happen under any moderate or hard acceleration.

If I turn the car off and turn it back on a few minutes later the problem is fixed and the car will run great for the next couple of minutes then the popping and stuttering will resume.

The car drives great when it hasn't been driving for over 30 minutes will hit redline.

I have new NGK iridium plugs -11
And New Osaka Coil Packs which has helped it stutter less
I have re soldered and cleaned the MAF
I ran the ECU got code 33, Heated Oxygen Sensor, I cleaned it put back in. Code hasn't come back also running without o2 still won't rev up

Rescanned got code 44 for ECCS working correctly.


 

Link to comment
https://www.sau.com.au/forums/topic/474647-rb25det-popping-and-shaking/
Share on other sites

Hey thanks for ur guys replys i tried check fuel pump pressure but couldn't figure out how to do it, 

Car is fully stock pulled out the sparkplugs have yellow on the tips and the metal screw in part it black, gave them all a clean with break cleaner the stutter persists 

They only have about 1500 kms on them 

 

57 minutes ago, NzPeasant said:

Hey am going for a car scan on Friday to diagnose the problem, I will get back and let everyone know what the problem is in case anyone else has this problem thx

Do that ! Where are you taking it as a matter of interest?

Not a bad idea will tee in a fuel pressure guage Ty

Also taking it to a random mechanic shop in Auckland that said they could scan obd1 lol 

Will let u guys know the results 

Vid attached is me flooring car in neutral revved to 4k the first time I did it 

i have a feeling i have a similar issue...with my case my sound just turns into a gruggling sound after 30minutes but the car idle's at perfect 1.1k rpm. The meters are still find, the whiteband reading fine. I don't know...
Some say that i am using water and no antifreeze coolant, causing things to become hot in the radiator and cause bubble. Some say its the thermostat and some say its a blown headgasket.
I know it's not the sparkplugs because i gave the car a service 10days ago with fresh v-power 7 sparkplugs, oil and oilfilter

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...