MS3X CLT and IAT problem!

[PUMPISH]

Just finished the one more install of MS3X.
Inline 6
1200cc EV14 High ohm injectors
Wasted spark
Éngine started after first but I have very strange issue that I never seen before.

Both CLT and IAT jumps like crazy between current temperature and over 200 Celisus.
CLT jusmps allmost every 2 seconds and IAT about every 20 sec.

I tryed to:
Put them in free air
new sensors
new wiring
ground to different places



Nothing helps!

When I remove the connector från the sensor CLT shows stabil 81C and IAT 21C

Any ides?

Thanks!

[franksidebike]

Hi
Can you test with a Stim?
Frank

[PUMPISH]

Hi
Can you test with a Stim?
Frank

Yes same issue with a stim!

We even tryed:
install new ms3 card and stil the same issue
convert v3.0 card to ms1 extra and then it works
But v3.0 card together with ms3 card still the same problem

[Matt Cramer]

What voltage do you measure on the CLT and IAT input pins?

[PUMPISH]

What voltage do you measure on the CLT and IAT input pins?

I found out:

If I reflash ms3x and reinstall Tuner studio and then use USB imput then it works just fine!
As soon I use DB9 I get errors and CLT and IAT start jump like crazy again.
So if I switch back to USB i stil have the same issue!
I must reflash both ms3x and reinstall Tunerstudio to get rid of the problem and only use USB.
As soon I use DB9 i infect both ms3x and tunerstudio and no ide why!

[Matt Cramer]

Is this a built in DB9 on the laptop, or a USB to DB9 adapter? If so, what sort of adapter?