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Turbo Doctors Neededto Diagnose Issue! Video Inside! R32 Gtst

bLaQ.bOi

By bLaQ.bOi,
in Engines & Forced Induction

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bLaQ.bOi Mentor

bLaQ.bOi

Posted
Posted (edited)

ok so havent driven my gtst for like a year now.. as i bought a GTR and now have an audi...

anyways theres a few things wrong with it.. i jsut serviced it today.. yet to do sparkies...i will tomorrow

but when i drive and come to a set of lights and go down through the gears.. and when im slowly rooling ill put it in neutral. the idles drop tooooo low and it almost stalls sometimes it does..(i think its the timing.. i remember taking the whole thing of whne i was "learning" about cars)

also when i drive

smoothly driving along... the all of a sudden it just cuts out... like the cars still on.. but its as if im puting the clutch it.. the revs just DROP and no matter if im pusshing the accelerator.. it still drops.. but then it kicks in for a second again... and then drops an kinda sputters

then it wont let it build boost....after this... it jsut goes back to normal

heres just a video of it idling...

can someone tell me what that HIGH PITCHED RINGING is???

Edited by bLaQ.bOi
cmoney Proficient

cmoney

Posted
Posted

Yeah id also back the AFM theory. Those symptoms sound like the sedate version of what happened with mine. Mine felt like i was out of petrol, youd put ur foot down & it would go, then stop, then go again several times a second. f**kin nuts!!!

As for the dropping revs, mine does that a little at times. I usually drive around it without even noticing, but i think the IAC valve on the back of the intake plenum may just need adjusting. Or it could even be the TPS not picking up 100%, either way i dont think its too major. Theyre the 2 devices that seem to play with revs when the car isnt yet at idle.

The not building boost issue, the only thing i could relate it to is either the ECU or turbo. If the turbo is blown, there will be a shit load of smoke i would think, but it doesnt sound like it. If you have the standard ECU, unless you are driving along in gear the engine wont build boost above 0. Its a built in safety i believe, could have something to do with whatever the sensor is for this. If the car is idling, or the clutch is in & you rev it, it just wont build boost, id see how the AFM bit goes, & if the problem still exists look into this.

PS, please let me know about the dropping revs if you solve it, should cut down the amount of time i spend stuffing around with it.

Cheers

bLaQ.bOi Mentor

bLaQ.bOi

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Posted

ok thanks for the advice guys... sorry about the vid

here it is!

http://au.youtube.com/watch?v=GnLM99eCTVo&...re=channel_page

il let you know how it pans out

also theres a cable that comes from under my car thats attached to the cat... but its broken and not intact maybe this has something to do with it?

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