Steve Posted August 13, 2006 Author Share Posted August 13, 2006 You have checked you throttle setting? if the throttle setting is lost this will cause some odd idle anomalies, also making adjustments to the injector or airflow maps at idle will only cause the std ECU to try to re adjust the AFR back to 14.7. If i leave the map as it is now, the afrs sit between 15.0 -16.0 fluctuates alot. But if i increase the airflow adjustment from -15 to 12 it ticksover perfect (14.6) doesnt fluctuate at all. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 13, 2006 Share Posted August 13, 2006 Hmmm is your airflow map set up with all - numbers? and is you injector map mostly adding fuel back ie + numbers, if so it almost sounds like your lambda has gone faulty and as the std ECU normally relies on the lambda for feedback, if there is no signal it will revert to a safe map, (but i'm not sure if the Supra has a rev limit on the safe map?) so with the emanage making adjustments to it will end up a bit strange! Quote Link to comment Share on other sites More sharing options...
Steve Posted August 13, 2006 Author Share Posted August 13, 2006 My map is setup with all numbers. Was mapped by Ian. It is trimming back lots of fuel as they are 650cc injectors. Have also changed the Lambda sensor to try and cure this problem Quote Link to comment Share on other sites More sharing options...
Steve Posted August 13, 2006 Author Share Posted August 13, 2006 Could the emanage unit itself be faulty? Is it worth swapping with another unit, load the map on and try it? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 13, 2006 Share Posted August 13, 2006 My map is setup with all numbers. Was mapped by Ian. It is trimming back lots of fuel as they are 650cc injectors. Have also changed the Lambda sensor to try and cure this problem Can't see why the larger injectors are not corrected for in the global injector setting? its not bad on the emanage, anyway as for trying another unit, yes it would be a good idea, as it seems like you have exhausted most other checks, not heard of any blue emanages going down other than being faulty to start with, it might even be an ECU problem. Quote Link to comment Share on other sites More sharing options...
Steve Posted August 13, 2006 Author Share Posted August 13, 2006 Didnt think about the ECU. Possible i suppose. Just wanna fix it so i can use the car again Quote Link to comment Share on other sites More sharing options...
Steve Posted August 14, 2006 Author Share Posted August 14, 2006 Been reading some other threads. Would a faulty/dirty MAP sensor cause this? Quote Link to comment Share on other sites More sharing options...
bondango Posted August 14, 2006 Share Posted August 14, 2006 It can, but were you not logging the MAP when you sent the logs to Ian, or were you logging the emanage MAP instead? Its one of the things i mentioned earlier in this thread, but a faulty MAP sensor usually throws a code. Quote Link to comment Share on other sites More sharing options...
Steve Posted August 14, 2006 Author Share Posted August 14, 2006 Not sure mate. Ian set up the logs to record what he needed to see. Is it easy to test the MAP sensor? Quote Link to comment Share on other sites More sharing options...
bondango Posted August 14, 2006 Share Posted August 14, 2006 if you log both the Greddy MAP and stock MAP sensor, the values for each should be the same. Or, using a Voltmeter you can read the Voltage from the stock sensor, You'll need a Syringe to apply vacumm and pressure to the sensor, and the voltage should adjust to each. I'll dig out the procedure for checking it in a bit. Quote Link to comment Share on other sites More sharing options...
Steve Posted August 14, 2006 Author Share Posted August 14, 2006 Thanks mate Quote Link to comment Share on other sites More sharing options...
bondango Posted August 14, 2006 Share Posted August 14, 2006 Cant find me 93+ component tests, but heres the one for the VVTi which should be the same. page 18 http://supras-ireland.net/manuals/Workshop%20Manuals/Supra%20MK4/03%20-%20Engine%20&%20Turbocharger/System%20component%20tests%20-%20Turbo.pdf Quote Link to comment Share on other sites More sharing options...
Steve Posted August 14, 2006 Author Share Posted August 14, 2006 Will have a look at that. Thanks mate Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 14, 2006 Share Posted August 14, 2006 It can, but were you not logging the MAP when you sent the logs to Ian, or were you logging the emanage MAP instead? Its one of the things i mentioned earlier in this thread, but a faulty MAP sensor usually throws a code. It logs both. The discrepancy is 0.02 to 0.03bar, not really enough to consider as an issue. -Ian Quote Link to comment Share on other sites More sharing options...
bondango Posted August 14, 2006 Share Posted August 14, 2006 Yep well that rules out a faulty Sensor then. Seeing you've went this far steve would it be worth getting the injectors tested?? Also, your fuel system flow is tank===>pump=====>rail====>AFPR===>return to tank Just i remember someone on here running the AFPR before the rail which will still show the correct fuel pressure but the actual fuel pressure in the rail will be very little. I think we have covered 99% off all the likely problems now, so im starting to clutch at straws to be honest... Marty Quote Link to comment Share on other sites More sharing options...
Steve Posted August 15, 2006 Author Share Posted August 15, 2006 Yep, my fuel system goes from the tank, through the pump, through the filter, into the rear of the rail, out of the front of the rail, to the FPR and then back to the tank on the return line. Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 15, 2006 Share Posted August 15, 2006 Can't see why the larger injectors are not corrected for in the global injector setting? its not bad on the emanage, anyway as for trying another unit, yes it would be a good idea, as it seems like you have exhausted most other checks, not heard of any blue emanages going down other than being faulty to start with, it might even be an ECU problem. Just spotted this. The global correction thing isn't a useful tool in my opinion, although on the surface it looks like it is. That's why I don't use it. Don't think it's the firmware, that v1.36 has done well on mine and others trying another unit is always a good step though. -Ian Quote Link to comment Share on other sites More sharing options...
Steve Posted August 19, 2006 Author Share Posted August 19, 2006 Right, have tried swapping the emanage to prove whether mine was faulty and it has made no difference. Its still doing the same. Next thing i am gonna try is the Stock ECU. What else can it be?? Quote Link to comment Share on other sites More sharing options...
bondango Posted August 19, 2006 Share Posted August 19, 2006 Right, have tried swapping the emanage to prove whether mine was faulty and it has made no difference. Its still doing the same. Next thing i am gonna try is the Stock ECU. What else can it be?? What about the Injector Resistor Pack or the wiring - if your running one.. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 19, 2006 Share Posted August 19, 2006 Ha hasn't got one. He's using 650 PE 'drop-ins'. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 19, 2006 Share Posted August 19, 2006 Clutching at straws now. How about an air leak down at the manifold-to-head or manifold-to-plenum... Possible injector seals? Quote Link to comment Share on other sites More sharing options...
bondango Posted August 19, 2006 Share Posted August 19, 2006 Clutching at straws now. How about an air leak down at the manifold-to-head or manifold-to-plenum... Possible injector seals? Well that would definately cover all the bases Steve. as Matt says could be a bad gasket seal or injector not seated or sealed though i would prolly rule out the last as you said all your Plugs showed lean conditions on all cylinders, while your checking it Maybe worth getting the injectors tested as well? Quote Link to comment Share on other sites More sharing options...
Steve Posted August 19, 2006 Author Share Posted August 19, 2006 Matt, what if i leave the car with you for a while? Getting cheesed off with it now. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 19, 2006 Share Posted August 19, 2006 Can do if you like. Quote Link to comment Share on other sites More sharing options...
Steve Posted August 19, 2006 Author Share Posted August 19, 2006 Can do if you like. Will try the ECU first, if it doesnt work, will give you a call. How soon can you get it in? Quote Link to comment Share on other sites More sharing options...
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