Erratic Ignition Elite 2500

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Filholm
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Joined: Sun Jan 14, 2018 12:39 am

Erratic Ignition Elite 2500

Postby Filholm » Thu Feb 22, 2018 3:22 am

Hi

I own a VW Mk4 1.8 AGN, which i am stuggling to establish good signals for "trigger" and "home". And i am not sure i fully understand, the "debugged data".

I have the following setup:
Trigger sensor: Reluctor
Edge: Falling Edge
Filter: 0
Home sensor: Hall
Edge: Rising Edge
Filter: 0

Trigger pattern: VW 1.8T. (60-2)

When i tweak the edge detection on the home sensor, it returns with error 4: Home Tooth Count Error. If i change it back to Rising there is no error.

The ECU synchronisation level is "Full", and only fires on 1-2 cylinders. On cranking i get erratic ignition on all 4 cylinders.
The "Home percentages of valid travel" is around 84%. The "Trigger Tooth Count" isn't always counting all the tooths.

What can i do to improve the signal quality, other than tearing the wiring apart again?

Best regards
Martin
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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HaltechMatthew
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Re: Erratic Ignition Elite 2500

Postby HaltechMatthew » Thu Feb 22, 2018 2:26 pm

I would put a scope on the signals to see what exactly is getting to the ECU.

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Filholm
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Re: Erratic Ignition Elite 2500

Postby Filholm » Thu Feb 22, 2018 11:46 pm

I have measured the signals today. I didn't seem to get the Cam (Hall sensor) signal, and the Crank (Reluctor) was plauged with noise.
Is it correct that, i can expect the Haltech to count all the tooths, for every rotation? Atm. it only counts 22 out of 58 on average?

Best Regard
Martin
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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Filholm
Posts: 18
Joined: Sun Jan 14, 2018 12:39 am

Re: Erratic Ignition Elite 2500

Postby Filholm » Thu Feb 22, 2018 11:46 pm

I have measured the signals today. I didn't seem to get the Cam (Hall sensor) signal, and the Crank (Reluctor) was plauged with noise.
Is it correct that, i can expect the Haltech to count all the tooths, for every rotation? Atm. it only counts 22 out of 58 on average?

Best Regard
Martin
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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HaltechMatthew
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Re: Erratic Ignition Elite 2500

Postby HaltechMatthew » Fri Feb 23, 2018 11:58 am

If the scope says you dont have a cam signal and the crank signal has a lot of noise then you need to look at sensors and wiring more than anything.

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Filholm
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Re: Erratic Ignition Elite 2500

Postby Filholm » Sat Mar 10, 2018 6:26 pm

Last night i changed the VR-sensor, and lended a oscilloskop again.
The scope shows a fine signal, with all the peaks. When i datalog the input tooth count on the Elite 2500, it doesn't show all the tooths.
Image
How do i setup the Elite 2500, so i get all the signal into it.


Here it's meassured at the Haltech Elite Harness:
Image

Best regards
Martin
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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HaltechMatthew
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Re: Erratic Ignition Elite 2500

Postby HaltechMatthew » Tue Mar 13, 2018 1:42 pm

If you have the probe connected to the Trigger + wire then it looks normal but that is a Rising edge for the trigger. You most likely have the polarity of that sensor backwards. This is shown by the missing tooth gap as a Falling edge so the first tooth after is is Rising.

The home is always Rising edge on these patterns. It is this edge that gives us 3x edges in one crank cycle and 1x edge in the other crank cycle.

So from what you have shown here Rising for both edges is what you need to set.

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Filholm
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Joined: Sun Jan 14, 2018 12:39 am

Re: Erratic Ignition Elite 2500

Postby Filholm » Sun Mar 18, 2018 1:24 am

So today, i had the chance to switch over the wires. As you supected they where switched, in my rush to complete the harness i had connected yellow to yellow and not yellow to white.

I confirmed i have the right polarity and signal strength, but for some reason, i can't get the Elite 2500 to count all the pulses. The best i have so fare is 57.
I have tried with generic missing tooth with no home, to rule out the cam sensor. Both the cam and crank sensors have been replaced.
We have tried tweaking the voltage threshold, with no luck.

This is what the Haltech sees:
Image

My coussin spoked about another guy from Denmark playing with Haltech and VW Golf, and he have been trying on and off for 1.5 year.
The guy is a trained VW technic. My coussin have implemented a VEMS in his old Volvo. He have been looking through my installation, and have not been able to spot the problem.

This is my last hope, as it is my daily driver, and it have been grounded for over a month.
I hope you have solution as i have given it my best try.

Best regard
Martin
Attachments
TEST 1_20180317-160645.rar
(42.32 KiB) Downloaded 17 times
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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HaltechMatthew
Haltech Staff
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Joined: Tue Feb 07, 2012 11:45 am
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Re: Erratic Ignition Elite 2500

Postby HaltechMatthew » Mon Mar 19, 2018 1:49 pm

Can you zip the file, no unrar software here on our PCs.

it will also be much faster to tech support to call or email us directly. The forum is only checked when we are not swamped with the other gazillion methods of contacting us and it is more for other users to help.

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Filholm
Posts: 18
Joined: Sun Jan 14, 2018 12:39 am

Re: Erratic Ignition Elite 2500

Postby Filholm » Mon Mar 19, 2018 7:18 pm

Here is the map in ZIP.

Im trying to source a VR conditioner, so i can try that.
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500

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HaltechMatthew
Haltech Staff
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Joined: Tue Feb 07, 2012 11:45 am
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Re: Erratic Ignition Elite 2500

Postby HaltechMatthew » Tue Mar 20, 2018 9:15 am

Not attached.

You should never need this. Your ECU can be configured to read any signal that is coming in and your scope trace looks clean. You are far better contacting us directly when you are with the vehicle so we can help you diagnose it rather than trying to do this over a forum. Otherwise you are only going to get people giving you best-guess answers rather than actually solving the problem.

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Filholm
Posts: 18
Joined: Sun Jan 14, 2018 12:39 am

Re: Erratic Ignition Elite 2500

Postby Filholm » Tue Apr 24, 2018 3:58 am

Thank you for the help, here on the forum and e-mail.

I found the problem to be the coil-pack and the spark plugs.
Strangely enough in the time between preparing for the Haltech and after installing the Haltech. Both the coils and plugs died.

Anyway, the fun part with tuning and figure out settings comes now.

Best Regard
Martin
[*] Mk4 '99 Golf 1.8 20V N/A - Elite 2500


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