AMG Posted January 15, 2012 Share Posted January 15, 2012 Hi all, been a while since I have posted on here but here goes. Went to start the supra after about a month of standing and it won't fire. It turns over and sometimes gives an initial impression it is going to fire but then just keeps turning. I have not messed with anything lately so I am presuming something has persisted. After a bit of reading and messing about today still nothing. Changed old copper plugs for brand new iridium's. Fault codes 25 and 78 stored. 12v fuel pump check via dia port. Pump fine and can smell fuel in bay. All fuses appear fine. Coil packs swapped round and 'look' fine. Battery good and on optimate 24/7. Not had chance to check the spark yet, really should of done this when changing plugs but never thought at the time. Any ideas as to what could be wrong would be appreciated. It's not helping my argument to keep the supra with a house move and a baby on the horizon Quote Link to comment Share on other sites More sharing options...
James Posted January 15, 2012 Share Posted January 15, 2012 If you have a friend that also has a Supra, maybe try his/her ignitor pack? Quote Link to comment Share on other sites More sharing options...
AMG Posted January 15, 2012 Author Share Posted January 15, 2012 Cheers pal. I will see if I can get my hands on one from somewhere. are my symptoms the sort of things which happen with a knackered ignitor? Quote Link to comment Share on other sites More sharing options...
James Posted January 15, 2012 Share Posted January 15, 2012 I've never had an ignitor problem before, when my Supe failed to start it was the plugs. Though I've read of ignitor issues on here numerous times and it is so easy to change over that it is worth trying out Quote Link to comment Share on other sites More sharing options...
fastcar Posted January 16, 2012 Share Posted January 16, 2012 i have had a ignitor fail on me with same symptoms as you have said i would say its the ignitor pack Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 16, 2012 Share Posted January 16, 2012 (edited) Are igniters and plugs in the habit of failing simply from being unused for a month? Seems a bit unlikely. Maybe the battery has lost it's peak amps from being on charge constantly? I'd try another one. Be careful jumping it unless the existing battery is very low, as I was told that it can fry the igniter and ECU if amps are too high. Only what I was told by a garage owner who had a GZ I was interested in with the same stuttering problem. His mechanic said it was the igniter not firing all cylinders because it had stood until flat so they jumped it. I've had no such problem from jumping but the fitted battery is always dead when I do. It's only a slim one and doesn't last long without use. I'd blame the damp weather causing a short or poor connection somewhere. You'll need to reset and then check the fault codes after a fresh starting attempt, as the existing codes could be from a resolved issue. Someone will know what they mean, if not, I'll look them up. Jesus, ermmmm, good luck! http://www.mkivsupra.net/vbb/showthread.php?35920-How-To-Check-the-diagnostics-codes&highlight=Fault+code Edited January 16, 2012 by Morpheus Added link to FAQ (see edit history) Quote Link to comment Share on other sites More sharing options...
Lude Posted January 16, 2012 Share Posted January 16, 2012 mine has been in the garage all winter, havent tried starting mine yet, hope all goes well. as above cant see the ignitor just failing for non use. and i have read on here that the ignitor gets damaged only if jump started incorreclty. if done normal its fine. (jump started mine about 10 times last year) Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 16, 2012 Share Posted January 16, 2012 Jumping it with the leads on back to front will blow the 120 amp fuse in fuse box in the engine bay Quote Link to comment Share on other sites More sharing options...
AMG Posted January 16, 2012 Author Share Posted January 16, 2012 I have not jumped it so hopefully that will mean there is no problem with the ignitor. I will check all connections and contacts. Clear the error codes then try starting it again to see what codes come up from fresh. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 16, 2012 Share Posted January 16, 2012 If you get stuck and want to send it over to me I can sort this for you. Location in my sig. Quote Link to comment Share on other sites More sharing options...
AMG Posted January 19, 2012 Author Share Posted January 19, 2012 Right then. Not much progress due to work but I have reset the codes. Attempted to start it again but no luck. It tried for about one second then just kept turning over. Checked the codes again but there were none stored. Does this rule anything out or does it just tell me nothing Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 19, 2012 Share Posted January 19, 2012 Right then. Not much progress due to work but I have reset the codes. Attempted to start it again but no luck. It tried for about one second then just kept turning over. Checked the codes again but there were none stored. Does this rule anything out or does it just tell me nothing How much fuel is in it and how old is it? Might be running on fumes. Has to be something very basic, I reckon. Quote Link to comment Share on other sites More sharing options...
AMG Posted January 19, 2012 Author Share Posted January 19, 2012 That's what I am hoping mate. The tank is about half full and it is only about a month old. Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 19, 2012 Share Posted January 19, 2012 That's what I am hoping mate. The tank is about half full and it is only about a month old. All I can suggest is to pull off the HT leads at the other end and and re-connect them one by one, as well as any others that might possibly be an issue because of dampness or corrosion. Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 20, 2012 Share Posted January 20, 2012 (edited) nothing to see here just checked your garrage Edited January 20, 2012 by mellonman (see edit history) Quote Link to comment Share on other sites More sharing options...
AMG Posted January 20, 2012 Author Share Posted January 20, 2012 Whats that Mellonman? Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 20, 2012 Share Posted January 20, 2012 nothing it was a coment for a n/a not a tt. i see that your hybrids do you have a piggy back ecu and had the battery died / disconected? Quote Link to comment Share on other sites More sharing options...
AMG Posted January 20, 2012 Author Share Posted January 20, 2012 Oh right. The battery is fine. Not disconnected it and it is on an Optimate 24/7. I have had no signs or indications that something is wrong, just one day it would not start. I don't have a piggy back, just running a Blitz access ecu. Quote Link to comment Share on other sites More sharing options...
AMG Posted January 21, 2012 Author Share Posted January 21, 2012 Today's "progress". I have checked all connections I can see and find. After trying to start it this morning it did the usual attempting to fire then just turned over. Re-checked to fault codes and it has now stored 78. Bridged the fp and b+ in diag port and I can hear a lot of action in the engine bay, sounds like the pump is priming although I could be wrong. Checked the power to the fuel computer in the rear, all good. Checked the priming voltage to the pump with ignition on and, again, all good. The only thing I can think now is that I have to star replacing coil packs, ignitor, ecu, then work through countless sensors. Quote Link to comment Share on other sites More sharing options...
AMG Posted January 22, 2012 Author Share Posted January 22, 2012 Anyone got opinions on what to get first? Coil packs, ignitor, or ecu? One thought would be it the ignitor was buggered then I would not get the initial try to fire. Surely I would just get nothing? Clutching at straws now really. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 22, 2012 Share Posted January 22, 2012 Crazy way to diagnose, just bring it to me and I can sort it without just throwing parts at it and hoping You have to put a price on your time or you are just deluding yourself, far better to do something that makes you money and pay someone that knows the car inside out to do an efficient diagnosis and repair. Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 22, 2012 Share Posted January 22, 2012 Crazy way to diagnose, just bring it to me and I can sort it without just throwing parts at it and hoping You have to put a price on your time or you are just deluding yourself, far better to do something that makes you money and pay someone that knows the car inside out to do an efficient diagnosis and repair. Good advice and much better than throwing parts at the car blindly. Quote Link to comment Share on other sites More sharing options...
AMG Posted January 22, 2012 Author Share Posted January 22, 2012 Crazy way to diagnose, just bring it to me and I can sort it without just throwing parts at it and hoping You have to put a price on your time or you are just deluding yourself, far better to do something that makes you money and pay someone that knows the car inside out to do an efficient diagnosis and repair. I know what your saying chris. I might have to take you up on the offer but getting it to you is an issue as it won't start. Will have to get it trailored. I don't suppose you know exactly what's up with it? Cash waiting for the right answer lol. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 22, 2012 Share Posted January 22, 2012 Could be all sorts of things, simply impossible to guess this, you could tow it if you really wanted to, it's not that far. You can waste a huge amount of time and money just throwing bits at none starters when it might not need any bits at all. Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 22, 2012 Share Posted January 22, 2012 it is true i blew £400 on coil packs and it was not the problem but still got nice new coil packs Quote Link to comment Share on other sites More sharing options...
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