GV42 Posted May 5 Report Share Posted May 5 hello there , i have a suzuki jimny with a m16a engine installed and a monsoonx ecu, and wideband o2 sensor not been to a dyno, but its running very rich, no faults, everything seems to be ok? idle is good, very poor cold start here is a log PC Datalog - 2024-05-5 3;44;07 pm.llgx Quote Link to comment Share on other sites More sharing options...
essb00 Posted May 5 Report Share Posted May 5 It actually shows too lean there on the log. Also attach the tune file... Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 5 Report Share Posted May 5 You have an issue with extreme noise in your TPS signal. The erratic TPS delta is causing erratic amounts of accel fuel to be dumped in constantly. It could be a wiring issue, sensor issue, or mechanical issue such as no free play in the cable. TPS delta would usually be less than about 0.5%/100ms when steady state, yours is touching ~20%. GV42 1 Quote Link to comment Share on other sites More sharing options...
GV42 Posted May 6 Author Report Share Posted May 6 thank you for the reply's!! i could unplug it for a test? Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 6 Report Share Posted May 6 Im not sure how unplugging will really give you anything useful, obviously the noise will disappear when there is no signal. Quote Link to comment Share on other sites More sharing options...
GV42 Posted May 6 Author Report Share Posted May 6 @Adamw you are a STAR! i did a bit of reading from your post, i saw there is a deadband setting, i set this to 18%, as a test... no more cold start issues, AFR is on target , and it runs far , far better, so, going to fit new tps, with shielded cable, new connectors too! again THANK YOU!! Quote Link to comment Share on other sites More sharing options...
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