R33 Gtst Cutting Out At 4000rpm

[wolverine]

Hi smokem

He has assumed you are running stock turbo (and I am assuming you are using the factory ECU). It is mostly likely the ECU airflow cut you are experiencing. Aftermarket engine management or running lower boost (to reduce airflow) are the fixes.

It is harsh that people feel the need to call others idiots for not knowing everything but it is a frustration based on the lack of effort by people in searching through the forum for the answer first before starting another thread to answer the same tired old questions.

I hope there is some confirmation of what the issue was for the original poster when it is rectified or else this thread will have been for nothing.

[Trozzle]

Yes, my point is that without him saying he's running both aftermarket turbo and ECU, we can only assume he isn't. Therefor if the stock turbo survives running 15psi long enough, he'll be experiencing the ECU freaking from overboost (I think anything over 12psi with stock ECU makes it cry)

If he didn't have a semi-smartass response to the "being shot" comment, mentioning we didn't know anything about his engine it wouldnt matter...but maybe when he was typing it, he should have thought to tell us about his engine.

Either way, if you're running aftermarket gear, coils, plugs, or AFM

[smokem31]

my response was not semi-smart arseish.... im not an idiot, i was trying to help out another user on this thread with similar problems to me.

the reason for not posting my engine details were cos its not my thread, the problem we are trying to fix here is of the original poster, not mine. i was offering personal experince in hope of helping him.

i use the search function excessively, when i cant find the exact answer to my question, i will post.

if it is ECU airflow cut, is there any reason it would be happening below 12psi?

thanks

[Dose Pipe Sutututu]

now now kids, behave

[tomgtr]

OK.

yesterday I took the coils out and taped them up and the car ran great, revving to redline with only minor hesitation, for about 5 minutes until it started playing up again. Now it runs like crap and when i went to start it last night it wouldnt even idle properly for about 30 seconds then would only rev to about 3000 - 3500 rpm. 5 out of 6 coil packs had something rattling around inside them when i shook them? is that normal? Should I fork out the $400 for JJR coil packs or is there an alternative?

[jjskyline79]

I think you just answered your own question

Yes is the simple answer

I would have factored in the cost of replacement coils when i bought my Skyline. Most are coming on to between 10 and 15 years old now so its about time regardless of mileage, sorry kilometers to think about changing them. There bound to have started to brake down from the heat at the very least.

Why was this not picked up on the test drive though??????

Other things that I replaced regardless when I bought mine were

Oil oil filter and spark plugs

AFM

02 Sensor

brake fluid and coolent

cam belt

and brake pads and disks

ALL of the above is the min and not really that expensive and really should be done anyway imo to give you peace of mind

If you think its expensive then maybe a Skyline is not the car for you.

Also cut out issues and rough running can also be coursed by a loom that runs under the the drivers side wheel arch plastic. The wires become corroded and split you might want to have a look at that too.

Edited April 4, 2010 by jjskyline79

[tomgtr]

ok, today i got my yellow jacket coils and put them in, I also got a front mount and made sure everything was tightened up tight. It still breaks down????

Ive noticed it will run good when not warmed right up, or on long highway drives in cold night, So temperture is definetely causing it.

What else couldd it possibly be, i checked the plugs and they looked fine but could they possibly look alright but be the problem?

I cant understand why a stock r33 with new coils and front mount can stuff up like this?

Anyone got any other ideas?

[Rav3nNZ]

ok, today i got my yellow jacket coils and put them in, I also got a front mount and made sure everything was tightened up tight. It still breaks down????

Ive noticed it will run good when not warmed right up, or on long highway drives in cold night, So temperture is definetely causing it.

What else couldd it possibly be, i checked the plugs and they looked fine but could they possibly look alright but be the problem?

I cant understand why a stock r33 with new coils and front mount can stuff up like this?

Anyone got any other ideas?

You changed the coils without getting new plugs?

Personally considering this is the questioning area i would've got new everything, but each to there own i guess.

Get new plugs

[Deano 1]

Could Also Be the Fuel Pump, had the same prob with my old drift s13, changed the fuel pump and no worries

[TRYNCY]

i have the same problem with this on my 33 also, i got some answers saying my boost is too high

[TRYNCY]

i have the same problem with this on my 33 also, i got some answers saying my boost is too high

http://www.skylinesaustralia.com/forums/R3...98#entry5407398

thats my topic on my turbo lagg

Edited August 19, 2010 by TRYNCY

[Rolls]

could it be boost cut??

my car did it when I first got it, might wanna try a Fuel cut defender ( cheap as from any import wreckers)

band aid fix, and it probably wont fix your problem. Get the car properly tuned by remapping the ECU or a nistune. Fairly cheap and will see great results.

Do it once and do it properly.