Guest scuuby Posted April 17, 2013 Share Posted April 17, 2013 My 93 tt has started playing up! Drives absouloutly fine if you drive sensibly under or up to 3500rpm anything over that and it doesn't want to know! Same if you give it beans just seems to die at 3500rpm. Any ideas please? Quote Link to comment Share on other sites More sharing options...
listy Posted April 17, 2013 Share Posted April 17, 2013 Few possible causes. - spark plugs need replacing - coil pack clips need replacing - coil packs need replacing - sticky vsv - split vacuum pipe Plus others that I can't think of right now. Quote Link to comment Share on other sites More sharing options...
Guest scuuby Posted April 17, 2013 Share Posted April 17, 2013 Cool, thanks for the reply. I've changed the plugs and the fuel pump started whining a couple of weeks but to which point I have just replaced it with a new Walbro one. Can I just clean the vsv's to eliminate that? Tried checking the pipes that I can see and they all seem supple and don't seem to have any splits (would expect it if they were rock solid ) seems weird that it is ONLY at 3500rpm, could the ignitor pack have anything to do with it? Quote Link to comment Share on other sites More sharing options...
Guest scuuby Posted April 21, 2013 Share Posted April 21, 2013 Gone right through everything now and am putting it down to coilpacks! Can't seem to find any sensibly priced ones anywhere tho! Anyone know where I can get some preferably good second hand ones?? - - - Updated - - - Gone right through everything now and am putting it down to coilpacks! Can't seem to find any sensibly priced ones anywhere tho! Anyone know where I can get some preferably good second hand ones?? Quote Link to comment Share on other sites More sharing options...
listy Posted April 21, 2013 Share Posted April 21, 2013 You can get SuperSpark coil packs for around £300. About as cheap as you will get. Brand new OE items are £600. Quote Link to comment Share on other sites More sharing options...
Guest Nicholas Posted April 21, 2013 Share Posted April 21, 2013 Someone had a set for sale recently for around £180 IIRC, brand new too! check the for sale section Quote Link to comment Share on other sites More sharing options...
themodifiedkid Posted April 21, 2013 Share Posted April 21, 2013 I have a working second hand set you can have for 90.00 Quote Link to comment Share on other sites More sharing options...
Guest stp88 Posted April 22, 2013 Share Posted April 22, 2013 your ECU may be in limp mode or have bad caps in it , see if you can get one to try , i had that with a car and went through all the usual suspects to find that was the ecu . Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted April 22, 2013 Share Posted April 22, 2013 Have you checked the error codes on ecu? Quote Link to comment Share on other sites More sharing options...
Guest scuuby Posted April 22, 2013 Share Posted April 22, 2013 Have thought about the ecu but took the spark plugs back out and there was a couple with white tips! So was putting it down to coil packs. Can't seem to get hold of an ecu locally (don't know anyone with a supra let alone an auto one) Checked the codes and there's none in there! Spoken to a few people ( tuners ) and they all seem baffled by the problem! Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted April 22, 2013 Share Posted April 22, 2013 You don't need to replace the ECU mate, you can check for any error codes stored there, will help you to narrow down the search assuming its an electrical fault. Takes 5 mins and 1 paper clip, see here: http://www.mkivsupra.net/vbb/showthread.php?35920-How-To-Check-the-diagnostics-codes Quote Link to comment Share on other sites More sharing options...
TubbyTwo Posted April 22, 2013 Share Posted April 22, 2013 Also worth check the coil pack clips, they go very brittle when old and can cause running problems. about £3 each to replace. again, guide here: http://www.mkivsupra.net/vbb/showthread.php?61141-How-To-Refurbish-coil-pack-connectors Quote Link to comment Share on other sites More sharing options...
leeg Posted April 22, 2013 Share Posted April 22, 2013 have you checked the lambda sensor? reset the ecu by switching ignition to the on position and hold throttle fully down for 30secs. be warned it may not be a good idea though. ecu can be bought from whifbitz but is £1500 odd, but is plug and play Quote Link to comment Share on other sites More sharing options...
Guest scuuby Posted May 7, 2013 Share Posted May 7, 2013 Little update, replaced the coil packs, coil pack connectors, plugs, ignitor pack, fuel pump ...... But it's still doing it! Is anyone local to Bournemouth or has a ecu there willing to sell as need to get this sorted! Quote Link to comment Share on other sites More sharing options...
DaveR Posted May 7, 2013 Share Posted May 7, 2013 Is it like all boost suddenly dies when the 2nd turbo should come online? Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted May 7, 2013 Share Posted May 7, 2013 Hello new set of j-spec twins... Quote Link to comment Share on other sites More sharing options...
st3ven1 Posted May 7, 2013 Share Posted May 7, 2013 I would say check your ignitor pack, but if it's only happening when you would expect the second turbo to kick in, then it's probably relating to the second turbo. New set of j-specs required, sound only cost you £200ish. Quote Link to comment Share on other sites More sharing options...
Guest scuuby Posted May 7, 2013 Share Posted May 7, 2013 I've put a new ignitor pack on there but didn't make any difference. I've stripped and checked the turbos and they both seem fine, I've replaced pretty much everything now bar the ecu! It does it at 3500rpm wether it's stationary or not! Quote Link to comment Share on other sites More sharing options...
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