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How far is the control panel from the actual ECU box?
I suspect connection problem between the two.
Vitally critical is the ground path between the two.
Then there are things like "ground loops" and shields.
Is the control panel grounded to something else other than wire(s) directly to the ECU box?
The longer the wire run between the control panel and the ECU box, the more critical the shielding of the wires between the two.
If there are ground wire(s) in addition to the shield, I actually don't know of the shield must be grounded at both ends or at the ECU box only.
From Burly's experience, the control panel connector must not be twisted or otherwise moved in relation to the circuit board in the control panel.
Intermittent connections are a bitch!
Finn
Christopher Barber wrote:
This may be more of a vent than a real question. However, if anyone has
insight, I am willing to listen. Also, this is NOT a complaint about the
RWS products. This IS an admission to my continuing developing skills (or
lack there of) of wire systems and electrical troubleshooting. Tracy has
always been helpful and willing to provide even basic information. I post
here first to get the group wisdom and to try to spare Tracy the time as I
am sure that following his travels, he is currently overwhelmed with work
and emails....even though he and Laura have been great to respond to
previous and current concerns previous to this one. Gee, he is forgoing OSH
where his presence can provide for the general good of the rotary community.
Even though it is NOT prevalent on this list, sometimes expressing trouble
shooting and/or proof of concept questions/concepts/experiences etc. some
take the opportunity to go "see, that doesn't work" or makes the yet
uninitiated nervous without realizing that the ability to share online
OPENLY is one of the best safety devices we've got.
Anyway, My engine is/was running much better now that I have plugged some
intake leaks. The auto tune seems to be playing nice. However, following a
short engine run two days ago, I went to inspect the engine (FWB in my Velo)
and when I returned to the cabin, the EM2 was flickering.....then it seemed
to set itself in the calibration mode (and the bottom row of reading are
flickering and fading periodically). I would try to clear it by hitting
abort and it would flash the main screen for about a second and then return
to the calibration mode, showing "coolant pressure". Within the calibration
mode, the values/modes will change when I press the control buttons as they
should, however, when I try to get it to the main screen, it goes back to
the calibration mode. My first thought was a bad/sticking switch/es. So I
replaced ALL four switches to no avail, checked the grounds and continuity
of the wires. No joy. Seems too, the being in this mode "calibrated" my
coolant temperature to zero (doh).
When I started the engine (of course one of the easiest starts to date) in
this mode, the engine was surging in a rhythmic pattern, even though pretty
smoothly.
I am a thinkin' that tonight I will re-terminated all the d-sub pins.
Oh well, back to patrol....and then to the hangar (following a brief detour,
hopefully brief, to the big Houston dog show to support Jana and the dogs
she is showing. This is her big hobby and she is usually good about
supporting the plane)
Thanks. Thoughts are greatly appreciated.
All the best,
Chris
Christopher Barber
Attorney and Counselor at Law
5110 Bissonnet, No 418
Bellaire, Texas 77401
Serving the Needs of Senior Texans
281-464-LAWS (5297)
281-754-4168 Fax
www.TexasAttorney.net
--
Homepage: http://www.flyrotary.com/
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