Glow plug behavior in a Golf III TDI 81kW engine

"Does anyone have experience with the behavior of the pre-heater (with 3 glow plugs) on a Golf III TDI 81KW AFN engine?"
Could this be meaningfully reprogrammed in the engine control unit?
The car is parked in the garage, so it's rarely started, which is not ideal in low outdoor temperatures.

01/13/2009 23:40:21
Vehicle system:
01 - Motor electronics.
028906021FQ ------------
1.9L R4 EDC G00SG 0824
Encoding 2
Company number 00672.
Software part number: 028906021FQ.
System designation: 1.9l R4 EDC G00SG 0824

Where can I effectively analyze all the data blocks? Where can I find explanations about how to do this? "Should I try out your new tool?"
Or better yet, who can do this for me?
Thank you.
Regards,
Martin.

Let's try asking it the other way around?

What are you planning to do?
If you want to reduce the power consumption of the candles, simply remove the fuse from them, and then they will never turn on .

m;

Hello!
I would like to turn on the glow plugs when the outside temperature is around 10° or 15° Celsius, and turn them off again when the coolant temperature reaches approximately 70° or 75° Celsius.
Thank you.
Regards,
Martin.

Hm,

A tuner can do this, or you can power them yourself. Connect the relay and let's go.

I don't quite understand why you want to turn it on when the temperature is only 15 degrees. Then, a heated seat would be better.

m

It's interesting that the activation conditions are so different.

For me, they activate when the intake manifold temperature is below 5 degrees Celsius and heat until the coolant temperature reaches 80 degrees Celsius.

If the coolant temperature drops again, I think they will turn back on.

Quote:

The intake manifold is below 5 degrees Celsius, and it needs to be heated until the coolant temperature reaches 80 degrees Celsius.

Did you double-check that? "The values 5°C and 80°C are typically found in most service manuals, repair guides, etc."

In my current ALH engine in my Skoda, and previously in an AGR engine (also in a Skoda), the heating starts only below 0°C, and it stops at 50°C. At -10°C during startup, it reaches approximately 65°C.

Yes, I do. The displayed intake manifold temperature is 3.5 degrees Celsius. I heated it up to 80 degrees Celsius of water.

I saw it in VCDS, and I also hear a relay clicking at 80 degrees.

3.5 degrees Celsius intake manifold temperature and -6 degrees Celsius outside temperature .

Yes, that is definitely not the case for me.
At -20°C, the heating system might be set to a cooling water temperature of approximately 70°C. For example: -5°C to 45°C / -10°C to 55°C, etc.
It's possible that newer versions have improved settings.
My car is a 1997 model with an AFN engine.

My question again: Can this be reprogrammed?
If so?
Which tuner near me does that?
Thank you.
Regards,
Martin.

Quote:

Which tuner near me does that?

No one, because such special privileges are not worth it, even in the next life.

"I receive quite a few unusual requests, but what's the point of spending x development hours on something if no one will pay for it for the next 50 years?"

Just take a few diodes and a switch that you can use to trigger the relay yourself, and that should do the trick.

Best regards, Rainer.

Yes - I will!
I've already installed a temporary solution.
Thank you.
Regards,
Martin.