I haven't used linuxice, but on ubuntu 10.04 this works:



and that looks like



and then it just works. It defaults to com1 so you don't need to specify the port.

Hi
Terrific job making Star Trek for 20v/vt Barnacle.
Have a few questions about the values shown.
1) what should Throttle degrees be at WOT ?
Mine shows about 91 degrees I would have expected 100. (have checked that throttle cant open more when speeder is fully pressed.
2) What is max allowed air temp. before ECU want to lower turbo boost ?
3) Is the actual Knock sensor data available in the data array your program grab from the ECU ?
(seems like you only use position 0->8 + 16->21)

1) Throttle is a bit variable; it uses a differential from the start to work out where it is, so that's fine.
2) Not a clue.
3) No. You can't see the data directly on the 20 ECU, just the error relating to it if present. The sampling would be way too slow to get anything useful - though I suspect the design detects the envelope of the knock in hardware and compares timing to calculate the cylinder to pull back. You can't sample audio frequencies at one Hz.

Hiya, I just got my leads to test this out but I'm having problems. Its connecting to the ECU but failing to read the values.

Do I need to connect the red/black crocodile clips to something? The battery? Because they are too short to connect to the battery. Do I need to extend them?

Cheers,

-wolfman

Red lead needs to go on the positive battery terminal, black doesn't need to be connected. My leads didn't need extending but they are not all the same so I guess yours might.

Gareth

Managed to get Startrek working properly today, great peice of kit!



Unfortunately I don't understand some of it. From what I can tell my readings are all within certain peramiters (only green and yellow indicators... no red), but what worried me were the yellow bits at the bottom about the crank and cam sensors, do the numbers next to these indicate the number of times the car has been started since the error?

I've not had any problems with my coop... starting-wise, does this mean that either (or both) of these sensors are on their way out? (Gulp!).

Cheers
Steve

That's the internal error count. It starts at 64 when the error occurs, and is incremented every time the error recurs (every six minutes if it's a continuing error). It's also decremented every time the engine is started and the fault is not present - so yours occurred 8 and 30 starts ago.

You need to be careful with cam and crank sensor errors; it notes the absence of one by getting pulses from the other when it doesn't expect them - i.e. the sequence gets out of order - and so it can sometimes get a bit confused about which is actually faulty.

In this case, I'd check again in a few days and make sure the numbers are getting smaller...

Neil so if I understand the above, if you have an error that was recorded 5 times in a row the software will report the error in red and the number 69 next to it. Then if the ECU has two successful readings with no error it will report the error in yellow with the number 67 after it?

Gareth

Thanks barnacle, I'll check again at the weekend and see if the numbers are lower

With regards your edit there, can you erase errors with the Startrek software, or do I need to get the car to a specialist to do this?

Much appreciated
Steve

I think you can press the D key to clear the errors, or you could just keep and eye on the numbers and make sure they are going down each time you check it.

Gareth

Steve - Looks like I've linked on the page to an earlier version. It *should* say 'hit D to delete errors' but doesn't... however, hitting D should clear the errors on the version you have. Note that you may not see a change for up to twenty seconds.

I'll sort out the link when I get a moment.

Gareth - the documents are not clear. I believe that the error count is set to 63 once the fault clears and then decrements with each successive starts. Faults appear red if the count is 64 or greater - i.e. current - or yellow if they're old, for information.

Thanks Neil, that makes sense, otherwise it would be hard to differentiate between a fault that had occurred a number of times but was now not occurring, and one that was still occurring.

Thanks for this software Neil
I was wondering if you are losing the communication with the ECU while driving.
For me, it happens sometimes. I was using the driver from the chinese CD. I update them with the lastest driver but I did not try again.
Is it using a lot PC processor?

It's not using much processor power, but the timing is critical to the ECU and unfortunately by the time windows has been through its multiple access layers to the USB port, it can't always maintain it.

I didn't include a restart on the software since the ECU will not connect if the revs are above 2000 (i.e. most of the time if you're driving!) - I have no idea why Bosch designed it that way, but sadly we're stuck with it.

OK, so it is normal Thanks

hi folks, just a quickie regarding engine and startrek reading.

yesterday on my way to work, i was cruising at 60 mph and all of a sudden there was a really quick kill in engine power (no more than 1 second), it felt like a misfire but more noticable, id say "similar" to quickly switching the ignition on and off.
its only happend twice at random in the past 2 days.

has it anything to do with tonights STARTREK report (17) lambda interegator FR lower limit ???????

Nah. That's an old report; it's probably a month since that happened, from the count.

I'd be looking for electrical faults from your description.

With WOT Mass Airflow shows 408 m3/h from around 2700rpm to max rpm, is this a max value that can be shown or can it be different from car to car (20vt car)?

That's the maximum the sensor can read, plus or minus one or two. On WOT the ECU is running the map based on revs, I think; the flow is assumed. It's certainly in open loop at that point.

The Airmass meter from the 20VT is a HFM2-6.4 Type. So it should measure up to 640 kg/h.
But don't know how this is related to the output from startrek

The ECU delivers cubic metres per hour. Mass of air at sea level is around 1.3kg/m^3. 408*1.3 = 530kg/m. Curious.

Does the Startrek software work on vista ?

I assume that XP and Windows 7 are known to work ok.

I've not tested it personally, but there are reports upthread that it works on Vista.

Hi everybody,

let me briefly introduce myself. I am a staff member of the Italian Club Fiat Coupé Passion. I think this forum is simply amazing and useful. I read it frequently and I had a great help from a member.
I have written a little software, very similar to barnacle's startrek, for the Passion Club members (you can see a couple of screenshots here, sorry but it is only in italian). I will soon release a version also for 16V, 16VT and 1.8-16V.

Coming back in topic, I have noticed this behaviour (for the MAF value) too.
It sounded me strange and so I have monitored the voltage of the MAF. The voltage signal keeps growing till max power rpm (I could see 4,75V).
So, it seems that only air volume flow information is ceiling there.

But there is another question: at max power, the engine should "eat" more than 640kg/h....I don't know how the ECU deals with this...any idea ?

PiZ

Piz: your links don't work because they require a username and password and our image pop system is designed to display direct links to the image only, sorry.

I did try fixing the issue but found out I needed to be registered on your forum to find the images

Sorry ! I'll try to fix that....

Ok, it should work now

Stan....do you see the screenshots now ?
It should be a free hosting service....

Yes, we can see them now, thanks.

I checked the data sheet and the characteristic curve (number 3 is the coupe one ) shows more than 640kg/h at 4.75V. But don't know how accurate this is.

HFM-2 Bosch

Ciao PiZ

Software looks great I will have to give it a try when its done! I would also be happy to publish a link to it on our club website - www.fiatcoupeclub.org - if you are interested send me a PM

Grazie,

Mario