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  #1  
Old 19-02-2019, 02:44 AM
jondee86 jondee86 is offline
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Question Flickering blue light ?

Whilst driving at varying throttle, I have noticed that 'B' light
flickering as I slowly apply more throttle from cruise. If I continue
to apply more throttle the light will go out briefly and then come
back on solidly. There may also be a short orange blip from what
I believe is the water level LED. The tank is full so not 'low'

The setup of the gauge may not be perfect in terms of the number
of bars lit while spraying, but I do get 4-5 bars when I am hard on
the gas. In all other respects the system is working fine.

So, does the flickering indicate I need to do some adjusting, or is
it telling me that there is a problem ?

Cheers... jondee86
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Old 23-02-2019, 09:51 AM
jondee86 jondee86 is offline
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Exclamation Re: Flickering blue light ?

Reason I ask is that a month or so ago it was doing this flickering and one day
after I parked and turned the key off, I noticed that the pump was running ??
After investigating I found that the pump relay contacts had burned out and the
relay was not always disengaging when powered down. Replaced the relay and
no more flickering for a couple of weeks. Now it has started happening again.

So I'm wondering if the flickering light correlates with the pump relay getting a
"flickering" control signal ??

My injection initiates at around 14% IDC which is only just above my highway
cruising speed. If I get a bit of head wind or reach a slight rise the system will
be hovering on the verge of spraying. Logs show flowmeter counts of 1 or 2 for
a few seconds sometimes before I either accelerate of back off the throttle.

Could pump pulsation at very low injection rates cause the flickering light ??

Cheers... jondee86
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Old 23-02-2019, 05:07 PM
Richard L Richard L is offline
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Default Re: Flickering blue light ?

alter the THRES a little later.May be it is a bit too early?

question:
1. the serial number of the system
2. where is the pump installed?
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Old 24-02-2019, 11:54 PM
jondee86 jondee86 is offline
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Post Re: Flickering blue light ?

I have been thinking about setting the THRES a bit higher as my current
bypass valve setup seems to be keeping inlet temps under control much
better than the earlier setups I had.

Are the small pots fully variable or do they have to be set at the marked
positions ?? Can I increase by half a click instead of full click ??

The pump is installed in the trunk with the motor on top and the pump head
level with the bottom of the tank. The pump has a dedicated power supply
from the battery directly to the pump relay.

I don't have the serial number to hand, but it is the HFS3-v3.1 system and
your invoice is #2171

Cheers... jondee86
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Old 26-02-2019, 08:34 AM
Richard L Richard L is offline
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Default Re: Flickering blue light ?

Found it it was May 2016 when you ordered the system.

You wrote:
Are the small pots fully variable or do they have to be set at the marked
positions ?? Can I increase by half a click instead of full click ??

answer: it is continuously variable.

where did you wire the little red wire on the grey connector?
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Old 26-02-2019, 11:57 AM
jondee86 jondee86 is offline
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Default Re: Flickering blue light ?

The small red wire on the grey plug is connected to a common relay switched
12V power supply that is activated when the key is switched to the ON position.
This relay also supplies switched power to...
1. the engine ECU
2. an Innovate LC-1 WBO2 and DB gauge
3. a small relay coil that is switched to ground by the ECU to generate a back
emf voltage spike for drive my tachometer
4. the ISCV
5. the HFS-3 control unit
6. the HFS-3 alarm relay (white wire grey plug) I use this to turn on a LED on
the dash to tell me that the system is spraying (via the brown wire grey plug)

The green wire on the grey plug is connected to the ECU side of injector #4.
Previously this was connected to an ECU AUX output programmed to mimic
IDC. But when I upgraded the injectors and went to full sequential I needed
the AUX output as an injector driver.

As I recall, I did change some settings (THRES and GAIN) on the HFS-3 at
the time I fitted the new injectors, so it is quite possible that I have messed
up the settings. I will alter the THRES setting tomorrow and make a test to
see if there is any change.

Cheers... jondee86
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  #7  
Old 28-02-2019, 04:57 AM
jondee86 jondee86 is offline
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Post Re: Flickering blue light ?

27-02-19 existing setting as base. Injection initiates ~ 14% IDC. Flickering.
28-02-19 plus 1/2 click on THRES. Injection initiates ~ 17% IDC. No change.
01-03-19 plus 1 click on THRES. Injection initiates ~ TBA. Test deferred.

Deferred raising THRES as I need to get on the motorway to monitor MAT
vs IDC at constant speed. Will do that when I get a chance. But I did have
a short drive to try a few different settings of WL and WH. Tried them both
at 12 o'clock and then with WL full ACW and WH full CW... neither affected
the flickering, but did change the failsafe behavior.

My log shows that the system is becoming active (showing flowmeter output)
at IDC levels below the nominal 17% IDC initiate THRES setting. In several
places I can see flowmeter output values of 1, 2 or 3 continuously for periods
when the IDC is at 13-14%, particularly when the throttle is being gradually
opened. With more rapid opening of the throttle the flowmeter indicates a
"clean" turn on and a clean cutoff at around 17-18% IDC.

This suggests that the pump turns on before the FAV becomes active, and
that "leakage" past the valve is ocurring ? Does the pump have some
hysterisis to make sure it is up to speed by the time the FAV initiates ?

I also noted that the water level light is illuminating for around 3 seconds
pretty much every time I apply a decent amount of throttle to initiate spray.
But I can't tell if the onset of spray is delayed until the light goes out ?

If it helps, the only thing I haven't done that may be pertinent, is add the
solder blob to change the flowmeter resolution. I am running two jets
(1 x 0.7 and 1 x0.4B) with the 380cc/min FAV restrictor.

Cheers... jondee86

Last edited by jondee86; 01-03-2019 at 01:00 AM.
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  #8  
Old 01-03-2019, 08:40 AM
Richard L Richard L is offline
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Default Re: Flickering blue light ?

Link FDC and tell me if the gauge displays full bars at WOT. I like to know of you are using full FiDC or not. This result of the test will tel me what is the best approach to your settings.
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  #9  
Old 03-03-2019, 05:19 AM
jondee86 jondee86 is offline
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Default Re: Flickering blue light ?

There is a video showing what the gauge does here (FIDC link installed)...
https://youtu.be/HqtZys_-PwY
That is a second gear pull WOT to fuel cut at 8000rpm. Sorry about the
camera being upside down but I had to attach it to the handbrake and
couldn't get it properly lined up. You can see the lights OK though

Here is the data from my log of the run.
RPM vs IDC vs flowmeter count

5000...42.6...28
5500...49.8...39
6000...57.6...40
6500...63.7...42
7000...68.6...44
7500...76.8...43
8000...80.0...43

Cheers... jondee86

Last edited by jondee86; 03-03-2019 at 06:51 AM. Reason: More data...
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  #10  
Old 03-03-2019, 05:42 PM
Richard L Richard L is offline
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Default Re: Flickering blue light ?

you must not allow the bars go beyond 6 bars. Once the failsafe triggers, the boost will reduce and the B light will go blink. Try reading the user manual. Learn the set up the system yourself.
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