dnsn
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Posts posted by dnsn
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Wat area u in?
Are there any leaks etc u can notice
Maybe reply all hoses and electrical plugs
Does the check engine light ever come on
Wat mods hav u got
What fuel do u use
Clean the boost solenoid as a precaution anyway and its lines
Is it a sti
I use bp 98, and on rare occasions full force 10( only when I desperately need gas). Pretty stock engine, just has a sti genome muffler and a boost gauge. Have checked all lines and seems to be okay with no leaks
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I\'ve seen faulty afms do this
/quote]
I had this in my old V7 STi - AFM giving false readings, ecu seeing too much knock as a result and cuts boost (i.e waste gate pressure 7ish PSI) mine didnt throw any codes either..
See if you can find another AFM to try out
This sounds almost sounds identical! I\'ll try cleaning the afm and/or another one
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I\'ve got an OBD2 tool and it\'s not throwing any codes that my tool could detect (not a expensive tool so could be crap) I\'ve picked up codes before but didn\'t get any when it\'s gone into limp mode
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Just putting it out there to see if anyone possibly knows why my cars doing this. Occasionally when I\'m driving I\'ll notice that my car feels sluggish and lacks the go. I\'ll come on boost to check what it\'s running and it won\'t spool up past 7/8psi, where as my car normally likes to run anywhere between 13-16psi.
When this happens I normally just pull over, turn the car off, turn back on and I\'m away! Boost is back!How ever, last week this wasn\'t the case. It wasn\'t till later the next day my boost actually came right .
I\'m running just the factory boost controller, no tap or nothing. I\'ve checked and listened out for vacuum leaks but can\'t see/hear any.
Just seeing if anyone has any idea why my cars possibly doing this?
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looks like slip to me as well...
nice exhaust note as well mate!
Yeah, I love my exhaust. It\'s a standard down pipe, cat\'s still there, then got around a 2.25-2.5" pipe to a STI Genome tip. People I meet wanna buy the muffler off me, But it aint leaving cause I love the sound! Very very quiet at idle and normal driving. Loud when accelerating and on boost!
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Check the remote wire still in one piece from head unit. I\'ve had similar happen where the remote wire got snapped from amp/sub sliding around
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Yeah, Bit limited sometimes in Hawkes Bay. I travel to Auckland a bit at times So might get parts up there. I\'ll have a chat around down here and see what at I can source first! It\'s for just a plain non-STI wrx Wagon
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My Pocket sounds empty-er just thinking about all of this!
Go Genuine with all parts?? Or any aftermarket brand in particular for both cam belt/waterpump/clutch etc ????
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still in the car, have replacement clutch, will be getting changed. allow 800 for the plate and pressure plate and bearing, about that again for fitting. it will need doing, it only gets worse.
Yeah, I got told $1000 fitted. Not sure what type of clutch that is.
Any recommendations?
Ive got the cam belt to do soon too, So guess It\'s gonna come off trademe and stay in my Garage
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my clutch is fine for hill start and stall tests, first and second is fine, lets go at 4000 rpm in 3rd, slips everywhere higher gears.
can still get wheel spin using launch control, but it slips like no ones business.
Is that a problem with yours? Did you end up replacing the clutch or leaving it?
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Dont want to repeat myself
so ill go with an axle snapping then rewelding itself from friction
option b being clutch slipping
when the clutch starts to let go in trucks sometimes it behaves like this, wont slip in any situation but high load / low rpm - like heavy load, or uphill for example. I have had one behave exactly like this years back, it eventually started to show in the "normal" slipping clutch fashion
you could try adjusting the preload on it (via pedal adjustment under dash), that might give it a bit more clamp, could be juuust barely being disengaged at the moment
there is nothing engine related which can cause this to happen, you arent lighting the wheels up - if you were then speed would fly up - and its not a snapped axle cause that wouldnt behave like this, itd always slip
not trying to be a dick, its more a case of what else can cause this - the rpm is changing while you are in gear - the engine is "solidly" attached to the road via set gear ratios and the only thing which can change that relationship is wheel slip, clutch slip, or changing what gear you are in
edit - the point it is "letting go" is more or less where youd have peak torque on it too - basically the point where the clutch is having to work its hardest to maintain grip
I thought it was that originally too, But as I ain\'t so mechanically minded :-[. I got a mechanic to test it, He did a stall test and a hill start test and then said he reckon\'d the clutch is fine, and recommended that I Get it scanned as a sensor might be playing up.
I wasn\'t convinced by his answer hence why I posted it up here. ??? ???
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It can han happen at any throttle postion as long as rev\'s can build and boost can build.
Shot this video last night on way home. Unfortunatley it doesn\'t do it as bad as it has been in the link.
I stayed in 4th gear after driving at 50-60km\'s (I did this on a quiet 100km/h zone road to play it safe
) All i did is gave it some gas, Dont think it was WOT, and let the boost and rev\'s build up to get to speed. After it made its fun with the rev\'s it build like normal, and will keep accelerating fineAnd to top my bad luck off, after I stopped recoding, A car over took and flicked stones everywhere, Cracking my windscreen and Drivers side spotlight, So Does anyone know where to get one from to replace it??? :\'( It hasn\'t been my week.
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Yeah I\'m in Napier, hawkes bay. Its real hard to describe without actually being in the car! :\'(
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description doesnt help
revs can not move up and down while in gear unless clutch is slipping
clutch slip can be worst when in higher gears, might be fine to take off but slip in 3 4 5 high load situations
is it a misfire, or is it the revs just going vroom upwards then back down all on their own
It\'s hard to describe without Actually being in the car, I may have to get the GoPro on to get a video so you can get a clearer picture. Im pretty confident its not clutch slip, surely a hill start in a high gear with revs and boost up would make the clutch slip if it was weak. But in saying that im still open to any ideas.
As for a misfire it doesnt sound like it, There is no change in the audible tone of the engine other than the change in rpm.
I will be getting an OBD2 bluetooth unit (is it going to plug into my car?) in the next few weeks so can check for any error codes etc.
I will do a video and post the link tonight.
Thanks
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Hi Guys, This is a hard one to explain so bare with me...
Car is pretty standard apart from a STI Genome exhaust and a boost gauge, has done less than 100,000km and is in pretty good nick. It runs and boosts well, sounds like it should with no knocks or other suspect noises. I\'ve had the car for about 9 months now and it has just started to stutter when under load in 3rd, 4th, and 5th gear at around 3500-5000rpm. The stutter is hard to explain, the revs spike up and then drop down and then build again without changing throttle position (not always at WOT). It seems to be intermittent but has never happened in 1st or 2nd gear, The easiest way to get it to stutter seems to be to sit at a constant 50kmh in 4th gear and to open throttle from there without changing down (If I do a standing start and push it hard through all the gears it doesn\'t seem to do it). At first I thought it might have been clutch slip but it wont do it from a standstill when you push it hard and I have tried a steep hill start in 4th gear with plenty of revs and it stalled and wouldn\'t slip. It seems like it could be boost or vacuum related but I cant see any loose or perished hoses?
I\'ve been told by a mechanic that it\'s not a mechanical problem, and most likely a faulty sensor or some other electronic related problems. I haven\'t had a OBDII tool plugged in yet to see if it\'s throwing any fault codes, But that\'s my next step. I\'m waiting for it to arrive :-[
Any ideas?
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V7 boost issues. Any ideas?
in Impreza, Crosstrek and XV
Posted
Thanks! I\'ll have a read up now
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