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m150 table fluttering
Posted:
Wed Apr 26, 2017 8:33 amby nwwil
when i connect my laptop to my ecu the map table starts to flutter, whats wrong
Re: m150 table fluttering
Posted:
Wed Apr 26, 2017 10:15 amby Stephen Dean
Hi,
I am presuming that you are meaning the Engine Efficiency table? Are you saying that the engine runs differently with the laptop connected versus not? Can you provide some logging showing this occurring please. Standard level 1 logging with all of the diagnostic channels logged will suffice.
Re: m150 table fluttering
Posted:
Wed Apr 26, 2017 5:25 pmby nwwil
it does it with out the engine running as its new build and have not started engine yet
Re: m150 table fluttering
Posted:
Fri Apr 28, 2017 1:24 pmby Stephen Dean
Hi,
Do you have any sensors connected to the M1 yet? What sort of range of fluttering are you seeing? 1~2 kPa, or 50+ kPa?
Re: m150 table fluttering
Posted:
Sat Apr 29, 2017 9:22 pmby nwwil
think i;v found the problem, i disconnected the ltc and its sorted, so i pulled the ground wire and put direct to ground and its still ok, so i hope thats sorted. thanks for your help
Re: m150 table fluttering
Posted:
Mon May 01, 2017 2:01 pmby Stephen Dean
Hi,
Which ground wire did you pull?
Re: m150 table fluttering
Posted:
Tue May 02, 2017 7:28 amby nwwil
the one out of the ltc
Re: m150 table fluttering
Posted:
Tue May 02, 2017 9:40 amby SprinterTRD
Sounds like you had the LTC ground connected to the 0V sensor pin on the ECU.
This will cause the problem because the 0V sensor pin on any ECU is not designed to handle the current when the LTC turns the lambda sensor heater on.
Basically you didn't follow the wiring diagram for the LTC!