Jump to content
SAU Community

Recommended Posts

Guys i need some feedback from professionals such as yourselves.

My R32 GTS4 is running a HKS 2530.

Bigger injectors and fuel pump.

Apexi front mount.

I've got a super strong clutch.

Old style Apexi AVCR.

Only running 10psi.

The other day i was driving like normal, seriously, and the tachometre needle just jumped over 8 thousand revs as if i had clutched in, but i haden't. I pulled over and checked what i could but there was nothing visibly wrong. i started the car again and it drove fine. it's as if the engine is boosting like a million pounds without fuel. I checked the wastegate actuator line, no problem and all hoses are fine, clutch engages all gears fine, no diff noise, no gearbox noise, just this scary overboosting (imo).

If anyone knows what i mean please help a brother out!

Peace.

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/
Share on other sites

thanks guys. yes the car does move while the problem is occuring but feels VERY slow, as if there is NO boost at all. as for clutch slippage there has been no such action, fresh clutch very strong. I was thinking about the boost controller solenoid but i don't know how to fix one if possible. thanks again for your valuable input.

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-909985
Share on other sites

sounds like a slipping clutch to me. how long ago did you change it? with a stock one or aftermarket one?

if it were the boost solenoid going then that doesn't explain why it revved to 8000rpm suddenly it would only explain the loss of power.

maybe a problem with the diff? sounds something drivetrain-related as if the engine lost load and just revved freely...

let us know how you go,

Waz.

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911236
Share on other sites

thank you ed and waz. these things sound scary to a novice like me and i'm not so sure i know how to acurately check these things. the clutch is probably a year old and feels really grippy and always did before the problem started, it's a heavy duty item. the problem happens all the time now. any ideas how to check gearbox and diff?

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911312
Share on other sites

Does it happen when you accelerate? or just after you change gears? turn corners? etc etc

Does it happen when you are doing a certain speed or rev??

Or does it just happen any time on a straight bit of road at normal speed [and you may have been sitting on the same speed for a while?

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911371
Share on other sites

ooh so many questions. okay, car starts, clutch fine into gear, accelerate fine up to 1500rpm and then it's as if i've clutched in and the pressure of my foot on the gas pedal sends the revs flying. happens through corners and start stop etc. kind of goes away after a good warm up, say 15 mins. after this happened a few times i didn't want to damage the car further so i haven't taken it anywhere yet.

Thanks trident.

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911424
Share on other sites

When the engine revs increase, are you braking out into wild wheelspin? It is physically impossible for your revs to increase so dramatically without your roadspeed inceassing also.

So you are either braking into pretty wild wheelspin (i think you would have noticed that by now :) ) or you have a drivetrain problem, im assuming your clutch. :Oops:

You say it happens in 1st gear, does it happen in say 3rd gear going up a hill?

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911778
Share on other sites

thanks roy. yeah no wheelspin, and it does happen in any gear. as for my clutch it was working fine for a year and then one night while in 5th gear on a freeway it just revved up. the clutch engages all gears easily so if anyone could tell me how to check my clutch i would greatly appreciate it.

Link to comment
https://www.sau.com.au/forums/topic/44511-big-problem/#findComment-911878
Share on other sites

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

    • 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?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...