Ecumaster forum

hi.
i start my c20xe turbo last day but i have big problem with EGT sensor . MY egt sensor have big fluctation. my wiring is ok. Green cable is on B1 and is crimp it with the terminal (plus soldered) . White cable is on B18 with all sensor ground cables but here this cable is not crimp direct to terminal so this can be a problem ? here is my Log from android dash.

and why ecumaster AFR don`t work when engine is cranking

remove your sensor from the manifold and check it with boiled water.
There could be short inside the sensor.

For AFR readings during engine start you need to select option Enable when no RPM, wait until the sensor is heated and then start the car (use the 1.145 or higher firmware version).
This option will short the life of the oxygen sensor so disable it for normal engine operation.

thx i will try. For now when ignition is on and engine is off EGT work correct. but when engine is on EGT show this ....
this EGT is new from Ecumaster
i will check with hot water

now i try with my heat gun and EGT work perfect to 300c? but engine is not working only ignition is on .When engine is running EGT show fluctation

maybe have problem with some sensor in sensor ground B18 cable?

Yes, looks like ECU grounding problems.

I had the same problem with two sensors

I sent both to the complaint

I use other brands, and while ok

viewtopic.php?f=19&t=597

for test i try to remove camshaft sensor , knock but problem is still same. i remove alternator and no effect. now only crankshaft sensor and tps is on B18.
i think my wiring is ok but i will share my wiring diagram for anyway
C20XE motronic 2.5
crankshaft sensor oem
pin 1 -> B7
pin2 - >B18
pin3 -> B17

Camshaft sensor (from 2.8 motronic)
pin1 -> +12v
pin2 ->B15
pin3 -> B17

Knock oem
pin1 -> B2
pin2 -> B18
pin3 ->B17

TPS from x20xev
pin1 ->B18
pin2 ->B23
pin3-> B12

i use shielded cable (with high % silver wires)
B17,B24, G17,G24 is mounted on intake manifold

Hi everyone i have one new question

in ign. table why i can make changes only with 0,5? i can`t set 25,4 for example.
and why in this table i have MAP 290kpa? i use build in map ?!

sorry for my bad english
thx

p.s i still have problem with EGT for now i check without alternator, camshaft,knock

clamp wrote: and why in this table i have MAP 290kpa? i use build in map ?!

You can change the map axles as you like and need. For instance, try clicking the 290kPa and change it to a value that suits you best.

thx for this information

Today i test my EGT with white cable direct to chassis ground and i think i have problem with defect EGT or EMU because problem is 95% same
this is log from this morning

EGT problem is solved.
i use this ignition coils
BOSCH 0 221 604 115
and this is wiring diagram
download/file.php?id=339&mode=view

so i move pin2 - signal ground to chassis ground and now EGT works fine .

thx