MembersPage/NanassyPeter/CloneInstall/Trigger (2006-03-10 08:07:14)

Auditrigger on a inline 5 cylinder Audi engine,but now only with distributer,and 1 coil.

After 16 hours of hard work we tried to start the engine.Everything looked great,we had RPM signal during cranking,we had spark (at the right cylinders),and injectorclicking too.Unfortunately the engine did not fired up,after 4 hours of continous problem searching,we did not found the cause of our sadness.We tried different ignition and fuel settings.I also realised that the car dont really want to pull vacuum under cranking (in the vems,map sensor),tough i can feel it with my hand.(no plumbing,only throttle body).Note that the car was running in the past with dual K-jet without problems.We also checked Compression in the cylinders,and they are good.

I formatted the binary logs with /svn/firmware/utilities/vemslogger/auditrigger_logformatter <mdd0c_3.log >mdd0c_3.txt and watch:\nÿ1ÿ

The offending crankhome VR pulse typically comes after 1 crank rotation (==0.5 cam rotation, 2.5 events) instead of 2 crank rotations. So that means : check your cam-HALL ! that is responsible to mask every second crankhome VR pulses

It's good that you published config and mdd0c logs. After trigger hammered, don't forget

[ logs with working HALL] show:\nÿ2ÿ

This is perfect. (the initial x is before it catches sync).

In MT, during cranking that the RPM signal is silly, (goes from 0 to 30800, and the other signals fluctuates badly too, like MAP=61300 kPa ;-). This turned out to be noise in the RS232 cable (bad type USB-RS232 adapter anyway), not related to the cranking problem.

After the trigger signal seemed to be hammered (the HALL simply didn't make it's way to the ECU first!), we tried to start the engine (with 1.0.30 firmware).

We'll likely use a capacitor to inject HALL into the primary-trigger VR (EC36pin27). This allows easy retry with the original trigger system.


ALS switch>>>EC18pin6

Lunch control switch(+button)>>>EC18pin16

Shiftcut>>>where you want,not wired yet ,but will do it too.

0V and 4.9V in on/off

The temperature sensors are reading 7Celsius more than real

Real_17C reads on LCD_24C

this is on both IAT and CLT.I also made 17C and 100C ohm measurements but unfortunately the real measurement was left in the workshop.

Link to the datalogs,and other stuff we made together:

http://www.vems.hu/filethingie.php?subdir=MembersPage/NanassyPeter/ClonInstallStartUp/working_on_auditrigger

Thanks!