osso Posted October 19, 2003 Share Posted October 19, 2003 For those of you who didn't know, I picked up my new supra on Friday its a 1998 RZ-S vvti with 6sp manual in quicksilver! I have already met Matt from Sextons and I think Bobbeh? with the Black GZ Supra and TRD spoiler who was having a EGT sensor fitted.. I had the opportunity to get to know my Supra driving over 600 miles this weekend, and I did notice a problem with the boost.. when I was driving the supra hard in mainly first and up to 4th gear the boost gauge would max out then cut down to zero when the rev's went over 5k rpm.. which was rather annoying.. in my old mr2 I could redline in all gears and maintain max boost.. it just feels like i've got a fuel cut which is kicking in for a few seconds when I hit max boost.. am I right? Link to comment Share on other sites More sharing options...
Bobbeh Posted October 19, 2003 Share Posted October 19, 2003 Hehe not me m8, I was up in Donington today Link to comment Share on other sites More sharing options...
Roy Posted October 19, 2003 Share Posted October 19, 2003 err - that was me, matt's resident hobo ... Link to comment Share on other sites More sharing options...
dude Posted October 19, 2003 Share Posted October 19, 2003 Originally posted by osso For those of you who didn't know, I picked up my new supra on Friday its a 1998 RZ-S vvti with 6sp manual in quicksilver! I have already met Matt from Sextons and I think Bobbeh? with the Black GZ Supra and TRD spoiler who was having a EGT sensor fitted.. I had the opportunity to get to know my Supra driving over 600 miles this weekend, and I did notice a problem with the boost.. when I was driving the supra hard in mainly first and up to 4th gear the boost gauge would max out then cut down to zero when the rev's went over 5k rpm.. which was rather annoying.. in my old mr2 I could redline in all gears and maintain max boost.. it just feels like i've got a fuel cut which is kicking in for a few seconds when I hit max boost.. am I right? Hard to diagnose without a roadtest , if you get stuck drop by im in newhaven , 07973 422272 dude Link to comment Share on other sites More sharing options...
osso Posted October 19, 2003 Author Share Posted October 19, 2003 Hey Roy, i am hopeless with names, sorry I couldn't remember yours! Hope you got your EGT gauge sorted out Roy! it funny seeing you squirm when the Ferrari engineer started drilling down on your manifold Cheers dude I may just do that, I'll give you a bell in the next couple of days.. Link to comment Share on other sites More sharing options...
Roy Posted October 19, 2003 Share Posted October 19, 2003 purely mechanical sympathy ... i'm sure terry will be along shortly to explain that phrase (he can be objective cuz he has none!) Link to comment Share on other sites More sharing options...
osso Posted October 20, 2003 Author Share Posted October 20, 2003 I had a quick drive during my lunch hour to see when the boost drops, it drops in every gear when it reaches 4k rpm and the second turbo never kicks in.. I have noticed that there might be a missing relay in the ABS Trac box in the engine bay on the driver side.. There are only 2 relays in there, both appear to be for the ABS... Another thing i have noticed is the dash "Slip Off" light never comes on when you press the traction controll button.. could this be the problem? or could the wastegate for the 2nd turbo be stuck open? The 1st turbo is definitely working! Cheers James.. 07966 245296 Link to comment Share on other sites More sharing options...
cashpoint Posted October 20, 2003 Share Posted October 20, 2003 Had a similar problem recently when a pipe came off. It was one of the pipes that controls the second turbo ....... or at least i think it was as my symtoms were the same as yours. Second turbo I think it the front one check that all the pipes are on and not leaking Link to comment Share on other sites More sharing options...
Barry Posted October 20, 2003 Share Posted October 20, 2003 I had the exact same problem as you have just described, and my problem turned out to be a completely destroyed #2 turbo. Link to comment Share on other sites More sharing options...
osso Posted October 20, 2003 Author Share Posted October 20, 2003 Hey i hope not barry!! the supra has only done 21000 miles and the original owner had a turbo timer.. cheers cashpoint, i'll check the pipes later, i had a look earlier didnt see anything wrong or unusual apart from the missing traction control relay Link to comment Share on other sites More sharing options...
arnout Posted October 20, 2003 Share Posted October 20, 2003 sounds like a malfunction / broken / blown turbo 2 or it's control parts. I've got some spares here btw on those. if you're interested drop me a line. Link to comment Share on other sites More sharing options...
Marco Posted October 20, 2003 Share Posted October 20, 2003 Does it make any weird noises? Like whining or a high pitched whistle? Link to comment Share on other sites More sharing options...
osso Posted October 20, 2003 Author Share Posted October 20, 2003 I definitely do not think it is a blown turbo for a Supra that has only done 20k miles. I am sure you'd see it pissing blue smoke out the exhaust.. The 1st turbo whistles it definitely doesn't whine.. I am wondering if it has anything to do with the fact the traction control is missing, or I have heard that the supra fuel pump operates in two modes, cruise and for heavy loads.. I wonder if it is stuck in cruise mode? or could the waste gate be stuck open on the 2nd turbo? Keep your ideas coming in, I am open to suggestions.. You will probably see me at Petes event at Coventry this Saturday, doubt my supra will be fit for the rolling road tho! Cheers, James Link to comment Share on other sites More sharing options...
Marco Posted October 20, 2003 Share Posted October 20, 2003 I'm sure somebody will be able to help ya at the dyno. I'll be there to. Link to comment Share on other sites More sharing options...
Simon Posted October 20, 2003 Share Posted October 20, 2003 IIRC there is a momentary drop in boost as you go into twin turbo mode. i.e. as the 2nd Turbo kicks in. Again, IIRC this is normal function. This was discussed last year I think and a search may prove useful. Link to comment Share on other sites More sharing options...
osso Posted October 20, 2003 Author Share Posted October 20, 2003 I think you missed that my 2nd turbo isnt kicking in and boosting at all.. Link to comment Share on other sites More sharing options...
Simon Posted October 20, 2003 Share Posted October 20, 2003 Originally posted by osso I think you missed that my 2nd turbo isnt kicking in and boosting at all.. Shucks, I'll read things properly next time. Link to comment Share on other sites More sharing options...
SupraWoman Posted April 8, 2005 Share Posted April 8, 2005 I think its more likely some problem with Traction control thing. I got the same car - RZ-S, VVTi, year 2000, manual. Last summer when I had accident and the TC suffered a bit - my car wouldnt go into high boost at all and the slip control will come on showing the sign that car is sliding (even if the roads dry and I only in 3-4 gear). But when I push the button 'off for TC the car was flying. U prob need to get a good mechanic look at it. I overcame that problem by installing RaceLogic TC. Link to comment Share on other sites More sharing options...
Jake Posted April 8, 2005 Share Posted April 8, 2005 U prob need to get a good mechanic look at it. I think he's probably fixed it in the last year and a half. Link to comment Share on other sites More sharing options...
michael Posted April 8, 2005 Share Posted April 8, 2005 Holy Thread from the Dead Batman! Link to comment Share on other sites More sharing options...
Steve W2 Posted April 8, 2005 Share Posted April 8, 2005 Holy Thread from the Dead Batman! Link to comment Share on other sites More sharing options...
colsoop Posted April 8, 2005 Share Posted April 8, 2005 You think it is traction control related? why dont you remove the fuse for it in the engine bay see what happens? Link to comment Share on other sites More sharing options...
Jake Posted April 8, 2005 Share Posted April 8, 2005 You think it is traction control related? why dont you remove the fuse for it in the engine bay see what happens? ISTR that the throttle stops working if you disable the Trac on a VVTi Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted April 8, 2005 Share Posted April 8, 2005 Er, this was resolved, he had blown tubbie no. 2! And about 4 weeks after fixing it, he did it again......... .....how was this thread ever resurrected? Link to comment Share on other sites More sharing options...
Alex Posted April 8, 2005 Share Posted April 8, 2005 Nothing to see here....move along... Link to comment Share on other sites More sharing options...
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