ACPMick Posted September 17, 2020 Report Share Posted September 17, 2020 1990 nissan 300zxtt. My issue is following. Starts great goes to about 1300 to warm up then comes down nice and smooth to about 900 and it would stay there all day smooth. However if I blip the throttle on decel it will hit between 500-600 and feel like it's about to stall and then it recovers to about 1100 and starts hunting between 1100-900 for a about 30 seconds. Then it becomes more stable around 900 but still a slight hunt 850-950. Now if my electrical fan (not link controlled) kicks in during this time it smooths it right out at 900. once the fan is off it starts hunting again. I am not sure what to look at. Thanks for any help. Log 2020-09-17 3;45;49 pm.llg micktune.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 17, 2020 Report Share Posted September 17, 2020 Try this, the base position table was a long way off what it needed and I have turned on idle ign control. micktune V2.0.pclr Quote Link to comment Share on other sites More sharing options...
ACPMick Posted September 17, 2020 Author Report Share Posted September 17, 2020 Ok thank you. I will try now. Quote Link to comment Share on other sites More sharing options...
ACPMick Posted September 17, 2020 Author Report Share Posted September 17, 2020 Well that worked pretty much perfectly. Thank you very much. Ben C 1 Quote Link to comment Share on other sites More sharing options...
ACPMick Posted September 19, 2020 Author Report Share Posted September 19, 2020 Ok back. So day one it seemed great and it certainly is a lot better the only thing I am seeing now is that on decel it hangs for for a while before coming down. Log 2020-09-19 3;54;37 pm.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 19, 2020 Report Share Posted September 19, 2020 Ok, It looks like my changes to base position may not have accounted for the AC step and fan step. Can you do another log of some idle and blips with AC and fans off. Quote Link to comment Share on other sites More sharing options...
ACPMick Posted September 21, 2020 Author Report Share Posted September 21, 2020 I rewired the the cooling system so now the ecu controls the fan rather than the standalone controller, and so it seems better. Here is the the log file. I couldn't really not run the fan but I did disabled the ac stuff as the ac is not connected right now until I know I don't have to do another engine pull. Lol. Let me know what you think. It still hangs by about 100rpm after I blip the throttle but its getting pretty close. The first part of the log is me blipping the throttle with no fan and then blip with fan is on. Thanks again. Log 2020-09-21 1;24;58 pm.llg Quote Link to comment Share on other sites More sharing options...
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