Jump to content
SAU Community

Turbo About To Die? Gurus Help!

HtwCHACtkh
 Share

Recommended Posts

HtwCHACtkh Community Regular

HtwCHACtkh

Posted
Posted

Hey guys,

I have a stock (well, FMIC, Pod, no more) R33 GTST (series 1) and I noticed yesterday morning, since starting the car was running really really rough, dips and hesitated through the low rpm like crazy.. 1000rpm-2000rpm was really lumpy, idle was really lumpy.. 3000rpm-4000rpm seemed fine, 5000rpm had a big dip, no noise that I noticed tho at this time..

By the end of the day, around 6pm ish (and replacing a 15 year old battery that just randomly died on me. what a day..) I notice now under high boost (4500rpm+ yes stock boost) I get this really strange rattling sound, kind of hard to explain but I can get a very high quality audio recording of the sound easily. It's kind of like ball bearings in a tin.

I feel like the car is hesitating a little but eventually pulls through, below 4500rpm is fine now, very smooth. Car seems to be running really slow, I used to top out at 170ish in Third now I test it now and it tops out at 140 tops.. Tested on a mates long driveway.

Weirdest thing is problem only started to occur yesterday morning, after having a comfortable and smooth drive home the last night after filling fuel up late at night.

Gurus help! Should I stop driving?

Link to comment
https://www.sau.com.au/forums/topic/278059-turbo-about-to-die-gurus-help/
Share on other sites
Benzino33 Experienced

Benzino33

Posted
Posted
I feel like the car is hesitating a little but eventually pulls through, below 4500rpm is fine now, very smooth. Car seems to be running really slow, I used to top out at 170ish in Third now I test it now and it tops out at 140 tops.. Tested on a mates long driveway.

What do you mean it tops out at 140? u talkin about kilowatts or speed? if it's speed, how'd u do that in ur mate's driveway?

But anyway, sounds like a bit of turbo shaft play. I'd stop driving if u wanna save this turbo and get it looked at, or stay off boost. It might be a a small thing

*EDIT* Notice any white smoke coming out of your exhaust?

HtwCHACtkh Community Regular

HtwCHACtkh

Posted
  • Author
Posted (edited)
What do you mean it tops out at 140? u talkin about kilowatts or speed? if it's speed, how'd u do that in ur mate's driveway?

But anyway, sounds like a bit of turbo shaft play. I'd stop driving if u wanna save this turbo and get it looked at, or stay off boost. It might be a a small thing

*EDIT* Notice any white smoke coming out of your exhaust?

My apologies, a number without units is ambiguous!

I mean 140km/h, speed, and my mate has a really really long driveway, everyone including myself pitched in a little to make it. :)

I haven't checked for any smoke yet, however I will do that first thing this morning once the sun is visible. Do I have to check for smoke under load or would free revving tell a story? Or both?

Also, I think it would help the diagnosis if someone would be kind enough to explain the difference between blue and white smoke.. never really understood that. :P

Regards

Edited by Alinys
Benzino33 Experienced

Benzino33

Posted
Posted
My apologies, a number without units is ambiguous!

I mean 140km/h, speed, and my mate has a really really long driveway, everyone including myself pitched in a little to make it. :)

I haven't checked for any smoke yet, however I will do that first thing this morning once the sun is visible. Do I have to check for smoke under load or would free revving tell a story? Or both?

I'd say look for it under load whike driving, white smoke usually indicates a blown turbo. but if its not, i'd say get it looked at asap by a place that spacializes in turbo cars. dont jus go to kmart auto or somethin, they'll tell u to go to a turbo plce too

HtwCHACtkh Community Regular

HtwCHACtkh

Posted
  • Author
Posted
ball bearings in a tin? that sounds like you're describing a pinging sound.

you sure you put the right fuel in the car when you filled up?

This could sound viable..

I had one notch of Freedom 98RON E10 left in the car when I filled up with Shell V-Power and the problems started.

What is pinging exactly? Damaging?

James_03 Mentor

James_03

Posted
Posted (edited)

If it's going to ping because of fuel it won't be because you filled it up with v-power, normally v-power is fine. The only possibility for fuel to be the cause is that the fuel was bad to begin with.

Seeing has your running a stock ECU, put it into diags and check for any fault codes using the check engine light in the dash. If no fault codes show up I would probably dump the fuel and try again with new stuff. Dump it out into a good can but and keep it just incase it's not fuel related so you can re-use it.

Definately sounds like it's detonating under load/boost which may be caused by low octane bad fuel. Yes detonating is bad, and will eventually kill the motor if you continue to drive it like that.

Edited by James_03
shotter Rising Star

shotter

Posted
Posted

Depending if you live / work near any good performance workshops you should be able to take them for a quick drive and they should be able to tell you if it's shaft play in the turbo or pinging. And it shouldn't cost you anything. (but find out before they hop in the car) But i would also say dump the fuel and put different fuel in. Not from the same place.

quarkgun Proficient

quarkgun

Posted
Posted
I mean 140km/h, speed, and my mate has a really really long driveway, everyone including myself pitched in a little to make it. :down:

Hahaha, that's awsome :) You should build a skid pan out the back too :)

Did you get a recording of the sound?

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • dbm7
      R33 GTS25 NA - Stalling when vehicle is at operating temp

      By dbm7 · Posted

      For sure the later RB26 variants had a different setup (6 cam voltage sender?), but the RB25DE/DET share the same ECU pinout/PCB footprint, and at the ECU plug it ends up being 'throttle sensor in' & 'throttle sensor out' (to A/T TCU) ...you stick a multimeter on these pins and you'll find them directly connected (0 ohms) ; I had an pair of Nissan ECUs on the bench long ago, and I noticed this throttle sensor in/out link, actually linked to an op-amp ...which was unpopulated on the NA board, but present on the T board and I went 'ah-ha!' in some moment of clarity... ...it wouldn't surprise me if they changed strategy here though (in the software and actual monitoring of this signal), because they did with other stuff (A/T signals).. and 0.45v as a trigger point makes sense, as that's what the external TCU units expect at idle ; kudos, thanks for that insight...I suppose it boils down to whether or not Consult can display real time data of that signal's voltage... ...in any event, it presents the same target...ie; rotate TPS unit to achieve 0.45v to suit both ECU&TCU, and where do you goto from there? Just disconnect TPSwitch connector and/or that plus TPSensor connector....or do you go for the throat and disconnect IACV solenoid and see if it still stalls? (probably throws a recoverable fault code and goes for default idle strategy?)...
    • PotatoCake
      Exhaust silencers/varex exhausts

      By PotatoCake · Posted

      I’m also conscious that e85 is slowly being phased out. Not all United’s have them anymore. Can’t take the risk of being low on petrol and assuming the servo will have it. 
    • The Bogan
      NC MX5

      By The Bogan · Posted

    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      MR HAMMER has said his piece. Painted up to avoid Rusty Rusty. Actually lines up well. (i.e it lines up the same as the unmolested GTR guard). Turns out the GTR Strut brace does foul on the bonnet vents ever so slightly. May need a little bendy bendy if intended to keep using with a strut brace. So spacing it out to clear the FAST102 is not an option. Annoyingly, the bonnet vents also foul on the heater lines running over the engine. Given this engine does not EVER require a heater, a delete loop is going to be used. Don't worry, the defogger uses the AC. The heater is basically "Do not use the aircon and turn the fan on". It will still be effective, I promise.... once I get the system regassed... Will have to revisit with unvented bonnet I suppose, and suitable strut brace. There's plans to do this and other things tonight and bleed brakes (there was a weep) and put the bumper back on, and take Good Friday morning - Because troubleshooting on the side of the road limping it home at midnight tonight is ... not very smart.
    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      Thank you all for you assistance. I contacted Nistune regarding the support for the RB20DE along with my ECU Code (23710-10U00). They do have a map for it and added the RB20DE as a purchasable option now as well. They also added Malta as a Billing and Delivery options as this was missing. I was honestly amazed at their quick response and action, it took less than 24 hours. I also looked again at direct fit options for injectors, just in case I were to replace them. DeatschWerks seem to use a Bosch EV14 base and makes ones that fit mine at 440cc lowest, but also have 550cc at the same price. I tried looking for other direct fit options and managed to find one (also Bosch EV14 based) which includes a plug and play adapter on ebay. Did a small test with a Noid Light on the troubled injectors and all seems good, so they are pulsing properly electrically. One weird part is that they are missing on the same two cylinders as before I got the injectors cleaned. Mechanic also found this weird as he did not label the injectors and it is unlikely to have the faulty injectors be installed in the same cylinders.  
×
×
  • Create New...