Paschalis Posted April 27, 2020 Report Share Posted April 27, 2020 Hi all I have a weird issue on a 4efte toyota engine with my newly installed atomx I had just almost finished with sequential ignition setup and tuning the maps. Car is going great I even went on the dyno making almost 280 out of it, it s going great until I switch it off and leave it for let's say an hour. It gets let s say around 70 degrees water temp or even less, I start the engine and it goes completely lean mixture. It gets even more serious if I start it in the morning completely cold. All this is happening till I accelerate it once and gets warm or till I take it for a walk let's say, even if it's a small "walkaround" and doesn't fully warm up . Then it gets back to normal mixture with the warmup map still doing its job correctly but now the moxture is back to normal! I tried bigger master number on the main fuel, large warm up map numbers, no results, no difference in fact! Any ideas anyone? I could share the pcl file just for a check, no rocket science there:) Thanks Quote Link to comment Share on other sites More sharing options...
neil brown Posted April 27, 2020 Report Share Posted April 27, 2020 Can you see engine temp on the laptop Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 27, 2020 Report Share Posted April 27, 2020 Have you looked into what your post start enrichment values are? Do you have a Log of this and a copy of your basemap? Thanks Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 27, 2020 Author Report Share Posted April 27, 2020 2 hours ago, neil brown said: Can you see engine temp on the laptop Engine temp is just rising and it appears normal climbing until the middle, the 90 1 hour ago, Vaughan said: Have you looked into what your post start enrichment values are? Do you have a Log of this and a copy of your basemap? Thanks Post start just takes place for a little after the crank, so it works correctly. I can send you a photo tomorrow of the base map or even the whole file Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 27, 2020 Report Share Posted April 27, 2020 whole file and a log is preferable please Paschalis 1 Quote Link to comment Share on other sites More sharing options...
orlando bello Posted April 28, 2020 Report Share Posted April 28, 2020 4 hours ago, Paschalis said: Engine temp is just rising and it appears normal climbing until the middle, the 90 Post start just takes place for a little after the crank, so it works correctly. I can send you a photo tomorrow of the base map or even the whole file Hello Paschalis sorry to be in your post ,but I want to ask you if you had any trigger errors issues as i have done a 4efte also and experience trigger error headaches specially in idle rpm range.link monsoon g4x ecu. Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 So to sum up Here are my last fresh logfile and my tuning file. Today i the morning I ve corrected my warmup map to "huge" numbers so as to make it a little better if any. There are 2 errors that I can't locate maybe these are the resons of my problem (attached in the photos, error 8 and error 9) If during the warm up or after this I ll make a "walkaround" everything becomes normal and the car works perfectly again with no correction needed. Thank you all Quote Link to comment Share on other sites More sharing options...
orlando bello Posted April 28, 2020 Report Share Posted April 28, 2020 Have not downloaded the map yet but those Errors I dont have but the latest firmware will take care of those error code. Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 I think if I remember correctly that I made a firmware update when I firstly installed the ecu, I m not sure though Quote Link to comment Share on other sites More sharing options...
orlando bello Posted April 28, 2020 Report Share Posted April 28, 2020 Latest firmware release last week. Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 12 minutes ago, orlando bello said: Latest firmware release last week. Oops...1st job tomorrow then...could you please check the files in case you find something wrong there too? 19 hours ago, Vaughan said: whole file and a log is preferable please Done Vaughan 1 Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 28, 2020 Report Share Posted April 28, 2020 From that log it looks like you might need to add more warm up enrichment along the top row Paschalis 1 Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 There are already big numbers there and the thing is that it keeps going on this 'lean mixture' even after the warm up finishes until I acceletate for 1 or 2 times. Maybe it s because of those 2 errors that keep appearing? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 28, 2020 Report Share Posted April 28, 2020 Not likely to be anything to do with those two errors, they are more a diagnostics thing than an actual error hence why they have been hidden in the new release. I've just noticed your log actually shows it running rich (not lean, was thinking of the numbers the wrong way round) from startup until warmup and then goes lean once it gets to 80deg C. Do you have a log with the some acceleration in it showing it being lean and then back to regular fueling after the acceleration? Paschalis 1 Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 I can do it first thing tomorrow because now it's almost midnight here and I ll post back, what more could you need to collect? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 28, 2020 Report Share Posted April 28, 2020 Probably just need a log of the exact problem so I can see what the different fuel values are doing, this means I need to see it being lean and then dropping back to good fueling after some acceleration. What I'm looking for is what different values are contributing to the amount of fuel going into the engine and trying to find which one is causing this change between lean and running right. Thanks Paschalis 1 Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 28, 2020 Author Report Share Posted April 28, 2020 Inll come back tomorrow with a correct log I hope...thanks for your time Vaughan 1 Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 29, 2020 Author Report Share Posted April 29, 2020 13 hours ago, Vaughan said: Probably just need a log of the exact problem so I can see what the different fuel values are doing, this means I need to see it being lean and then dropping back to good fueling after some acceleration. What I'm looking for is what different values are contributing to the amount of fuel going into the engine and trying to find which one is causing this change between lean and running right. Thanks Done, accelerated 3-4 times and problem solved, it came back to normal mixture after being lean before the acceleration Log 2020-04-29 12;02;11 pm.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 29, 2020 Report Share Posted April 29, 2020 The ECU is commanding exactly the same injector pulse width immediately before the blip as it is afterwards, yet your lambda changes by more than 10%. So assuming your lambda probe can be trusted, then either there is a variation in fuel from something external to the ecu (such as fuel pressure or a leaking injector) or there is something that is causing a variation in the amount of oxygen reaching the lambda probe - this could be many things from an exhaust leak or valve lash too tight or hydraulic lifter not bleeding down etc. Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 29, 2020 Author Report Share Posted April 29, 2020 59 minutes ago, Adamw said: The ECU is commanding exactly the same injector pulse width immediately before the blip as it is afterwards, yet your lambda changes by more than 10%. So assuming your lambda probe can be trusted, then either there is a variation in fuel from something external to the ecu (such as fuel pressure or a leaking injector) or there is something that is causing a variation in the amount of oxygen reaching the lambda probe - this could be many things from an exhaust leak or valve lash too tight or hydraulic lifter not bleeding down etc. So if I disable closed lambda then we exclude the lambda from the equation so as to check the rest, right? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 30, 2020 Report Share Posted April 30, 2020 20 hours ago, Paschalis said: So if I disable closed lambda then we exclude the lambda from the equation so as to check the rest, right? No, closed loop lambda wasnt even working in that log. What Im saying is the ecu was comanding exactly the same amount of fuel before and after the blip, yet the measured mixture changed. So that suggests there is some external influence. Paschalis 1 Quote Link to comment Share on other sites More sharing options...
Paschalis Posted April 30, 2020 Author Report Share Posted April 30, 2020 20 minutes ago, Adamw said: No, closed loop lambda wasnt even working in that log. What Im saying is the ecu was comanding exactly the same amount of fuel before and after the blip, yet the measured mixture changed. So that suggests there is some external influence. I ll let you know my findings...thanks a lot for your help!! Quote Link to comment Share on other sites More sharing options...
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