ASV Starter Dose Adjustment: Practical Experiments

Hi everyone,

Here's the disclaimer upfront...

Yes, I have read the articles.
Yes, I have searched.



Now that my laptop is road-trip ready again, thanks to the cheap car power adapter that Roger found, I experimented with the adaptation channels in the ASV today.

What was particularly interesting were parameters 2 (LL speed) and 5 (initial quantity), because I actually want a lower speed and a higher initial quantity. The car doesn't start on the first compression, whether it's cold or warm; it actually takes a second or so to start running. It's just a minor flaw, but I have my ambitions.

Ultimately, I let the LL (presumably a vehicle) in, because with the ASV (presumably a parking system), you can only go down to a height of 861, and even that requires some maneuvering – I have to fold down the dashboard beforehand.

The default starting value is 32768. You can increase it up to 33268, and I only tried decreasing it to 20000 (but without actually starting the process), because according to searches and articles, increasing it to values *larger* than the default can cause problems.

However, the effect is zero... neither the displayed initial amount (22) nor the starting behavior changes with the maximum value.

Here's the question: Has anyone actually tried this with the ASV (or even the ALH)? I found one or two threads in the search related to the ALH, but unfortunately, there was no feedback on whether it worked and what values were experimented with.

Best regards,

Jan.

P.S.: Yes, I also used the correct login code...

Hi Jan,

Which login?

If I can distract my ASV GP01 colleague, I might try to adapt something from his Ibiza.

m;

Hi,

*headline* 12233 - types very well.

Best regards,

Jan.

Jan6K wrote:

The default starting amount is 32768; you can increase it up to 33268, and I only tried decreasing it to 20000 (but without actually starting), because according to searches and articles, increasing it to LARGER values results in errors. However, the effect is zero... neither the displayed initial amount (22) nor the starting behavior changes with the maximum value. At this point, the question is: Has anyone actually tried this out with the ASV (or also with the ALH)?

Hi Jan,

Since our ALH-Ibi always starts in the first compression stage, whether it's cold or warm, I haven't adjusted anything yet.

I experienced the common "starts cold immediately, but hesitates when warm" issue with the AFN.

Adjusting the initial fuel mixture upwards didn't result in any significant improvement in starting, but the engine did reach the low-speed operating range noticeably "rougher".

More effective was adjusting the pump to the "maximum early" setting according to the TDI Timing Checker, although this still didn't completely eliminate the sluggish warm start.

With the ALH, the pump is exactly in the middle of the target range, and as I said, it starts significantly better overall than the AFN... but don't ask me why .

Perhaps it's due to the smaller nozzles, which also provide better atomization when playing the organ. This could also explain the difference compared to the ASV (Air Spray Vaporizer).

@ Jan

If I'm already running out for you, then I won't bother looking up any technical articles .

I just wanted to double-check because you coded it so nicely, and I wasn't sure if it was the VW-specific secret code you used or not.

Let's see if I'm allowed to do anything on the sacred island of Ibiza.

17 inches look quite nice .

Hi,

"@Ulf: I'll also check the timing at some point, but I think it's probably not too far off, because the engine is running perfectly fine and delivering its full power (or even a bit more)."

It's not really bothering me, and I also wanted to test what the start quantity adaptation actually brings.

"@Martin: No problem at all, that's why I included the result right away. If you need arguments for troubleshooting, and if his dashboard is also making a lot of noise at idle... then enter 32786 instead of 32768 on channel 2 (no login required)... those extra 18 RPM make a real difference."

Best regards,

Jan.

Jan6K wrote:

Hi everyone, Here's the disclaimer upfront... Yes, I have read the articles. Yes, I have searched. Now that my laptop is road-trip ready again, thanks to the cheap car power adapter that Roger found, I experimented with the adaptation channels in the ASV today. What was particularly interesting were parameters 2 (LL speed) and 5 (initial quantity), because I actually want a lower speed and a higher initial quantity. The car doesn't start on the first compression, whether it's cold or warm; it actually takes about a second to start running. It's just a minor flaw, but I'm ambitious. Ultimately, I let the LL (presumably a vehicle) in, because with the ASV (presumably a parking system), you can only go down to a height of 861, and even that requires some maneuvering – I have to lower the dashboard beforehand. The default starting value is 32768. You can increase it up to 33268, and I only tried decreasing it to 20000 (but didn't actually start it), because according to searches and articles, increasing it beyond larger values can cause problems. However, the effect is zero... neither the displayed initial amount (22) nor the starting behavior changes with the maximum value. Here's the question: Has anyone actually tried this with the ASV (or even the ALH)? I found one or two threads in the search related to the ALH, but unfortunately, there was no feedback on whether it worked and what values were experimented with. Best regards, Jan. P.S.: Yes, I also used the correct login code...

Hello Jan,

ich habe jetzt auch an meinem AHF TDi mit der Startmenge experimentiert. Zuvor habe ich wegen der Warmstartprobleme das Relais 109 erneuert, die Leckölleitungen erneuert, den Temperatursensor durchgemessen und dann erneurt. Außerdem habe die Massepunkte überprüft und die Plusleitung von Batterie nach dem Anlasser an den Anschlüssen blank gemacht und wieder verschraubt. Weiterhin habe ich mit einer LED mit Vorwiderstand (~ 3K Ohm) etwa 2 Tage lang geprüft, ob der elektromagnetische Absteller auf der VP 37 einwandfrei arbeitet. Der Absteller bekommt bei mir nach Einschalten der Zündung etwa 3-4 Senkunden Strom und geht, wenn in dieser Zeit nicht gestartet wird, aus. Wird nach diesen 3-4 s der Anlasser betätigt so bekommt er allerdings sofort wieder Strom (~ 1.6A). Alle diese Maßnahmen und Prüfungen beseitigten das lange Warmstart "Orgeln" aber nicht. Nach dem Einstellen der Startmenge vom ursprünglichen Wert 32768 auf 33268 (Login 12233, Kanal 5) allerdings zeigte sich dann eine sehr deutliche Verbesserung des Warmstartverhaltens. Vorher bin ich wegen dieses Problems einmal etwa 1.5 Stunden "hängen" geblieben. Ich denke, daß nach dieser Wartezeit der Motor soweit abgekühlt (Motorhaube offen) war daß er wieder startete. Ich hoffe nun, daß damit bei mir das Problem den warmen Motor nur sehr ungerne abzustellen (Parkhaus, Kreuzung usw.) gelöst ist. AnsonMany thanks for all the tips.

Best regards, Fritz.