DaveFJ
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| posted on 24/5/11 at 02:41 PM |
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wife wouldnt let me play last night - had to work on her laptop 
hopefully i can try again this evening.....
Dave
"In Support of Help the Heroes" - Always
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DaveFJ
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| posted on 24/5/11 at 08:42 PM |
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Progress i think!
downloaded and ran tooth logger as suggested and its all over the shop! going to have to look at the setup again very closely and try to see why but
its triggering all over the place at the moment... sometmise seeing a nice steady 35? teeth the going bananas and showing 4 or 5 between
'peaks'....
logs can be seen here although i cant work out the best way to review them.....
Here
[Edited on 24-5-11 by DaveFJ]
Dave
"In Support of Help the Heroes" - Always
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David Jenkins
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| posted on 24/5/11 at 09:06 PM |
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Dave,
I can't speak for MS, but for Megajolt there are a few issues with the trigger wheel and VR sensor:
VR sensor cable screening: Use twin screened cable, preferably auto grade (but that's not compulsory). Only earth 1 end of the
screening, otherwise you get interference loops that remove the effectiveness of the screening (in fact they can make interference worse).
VR sensor gap: should be around 1mm.
VR mount rigidity: MJ users have noted a problem where the VR sensor resonates, usually around 4k rpm, when the sensor mount isn't rigid.
When the sensor starts vibrating then it plays havoc with the signal sent to the controller! Making the mount more rigid almost always gets rid of
this problem.
None of these may be your problem - but they're worth eliminating.
Cheers,
David
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coyoteboy
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| posted on 24/5/11 at 09:55 PM |
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I'd be genuinely surprised if it was that considering the perfect RPM log curves spotted earlier? From your tooth logs, and I've only cast
an eye over a few sections of the logs, you seem to have 35 teeth on every one and the missing tooth is clearly nearly 2x the normal tooth gaps? Seems
to be fine unless you can point out a specific case in the logs? (I'm looking at the CSV). If you had synch errors you'd almost definitely
see RPM glitches. The above comments about sensor wiring and mounting are of course correct.
[Edited on 24/5/11 by coyoteboy]
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DaveFJ
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| posted on 25/5/11 at 01:53 PM |
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will try again tonight with the tooth logging... was a bit rushed last night
willalso inspect the pickup and bracket again - it strikes me that if the bracket has cracked that would explain a lot.....
Dave
"In Support of Help the Heroes" - Always
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matt_gsxr
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| posted on 25/5/11 at 02:19 PM |
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Just a couple of thoughts having looked at the log from earlier.
1) Plugs without resistors are not very nice for ECU and can cause interference on signal (i.e. on your trigger wheel perhaps)
http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqresistor.asp
2) Your MAT is recording -40degC, are you based in the North? This would normally cause some overfueling on my car.
Good luck with your problems.
Matt
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DaveFJ
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| posted on 25/5/11 at 03:41 PM |
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damn didnt notice that one.. looks like i have lost the adjustments that were applied for my air and water temp sensors....
will have a looksy and see if i can put them back!
Dave
"In Support of Help the Heroes" - Always
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coyoteboy
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| posted on 25/5/11 at 03:54 PM |
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Of course, good spot Matt!
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DaveFJ
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| posted on 25/5/11 at 04:00 PM |
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quote:
Originally posted by matt_gsxr
1) Plugs without resistors are not very nice for ECU and can cause interference on signal (i.e. on your trigger wheel perhaps)
http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqresistor.asp
Matt
Had thought of this but when my problems started i had the apr6fs plugs fitted which, obviously, do have resistors... I can refit them as the ap7fs
ones havent fixed the issue but i dont think its the source of my problems
Dave
"In Support of Help the Heroes" - Always
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matt_gsxr
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| posted on 25/5/11 at 10:53 PM |
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FWIW
MS2 upgrade is nice in so many ways (not just the spec sheet) but it tells you if the sync is lost in the log files "sync lost reason, and sync
lost count". Really useful, and it would tell you if you had the triggering problems before you swapped the plugs, which is very useful when
diagnosing problems.
Matt
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DaveFJ
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| posted on 31/5/11 at 02:35 PM |
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Update
Did some checking over the long w/e and the air temp sensor seems to be working but the MS sees a constant -40
so...
that leaves the wiring or the MS itself... currently trying to disconnect stuff and gain access to trace the wires and test....
Also:
I made a new pick up bracket for the tooth wheel sensor. much sturdier now but the logs from tooth logger still look pretty crappy..... will try
putting in some bypass wires for that as well and see if the signal gets better...
I worked out that my toothed wheel has a runout of about .5mm but it has always been like that and doesnt seem to have been an issue in the past....
Dave
"In Support of Help the Heroes" - Always
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coyoteboy
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| posted on 31/5/11 at 02:43 PM |
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I didn't think your trigger logs looked bad at all, I could only ever see 35 teeth per rotation and reasonably sensible looking tooth times?
Just measure the voltage at the MS input pin, that'll tell you if it's the ADC channel blown or the wiring.
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DaveFJ
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| posted on 1/6/11 at 03:43 PM |
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spent yesterday evening re-calibrating my air and water temp senders... the inc files were miles off for some reason? think maybe it all got screwed
when i changed laptops....
anyway, will upload new inc files when i am allowed garage time again and see what happens.... still trying to get at wires to test the circuit for
the air temp sender as well.....
Dave
"In Support of Help the Heroes" - Always
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DaveFJ
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| posted on 5/6/11 at 05:33 PM |
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well.. things are looking up
stripped back te engine bay loom and found the earth wire for the air temp sensor was broken...
have repaired it and did a quick run
see results at here
note: i have not uploaded the calibration settings for coolant and air so the readings are off but..... looks better even so!
will upload another log file once i have got the sensor calibration done...
cheers for all your help guys.. looks like i am finally getting somewhere
Dave
"In Support of Help the Heroes" - Always
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