VS M4.4 tuning dead? Start again here?

[Josya]

Hello everybody! The interim results are as follows. The basis for the fan operation parameters was to take XDF "REV6-RadFan-Control.xdf". From it, I copied the fan operation parameters into my working XDF. I have changed only the switching temperature so far. Instead of 102, I put 90. Now the fan turns on at 91 degrees Celsius. Works out 50 seconds. During this time, the temperature of the motor becomes about 85-82 degrees. Let me remind you that earlier I replaced the thermostat by 80 degrees. Interim results suit me. But I will continue to make more precise adjustments. By the way, I completely removed the oil cooling tubes from the system, because I really don't see the point in them. Earlier I conducted an experiment and brought the oil cooling to a separate radiator. As a result, I realized that even with relatively high loads, the oil thermostat almost does not open to operating temperatures. Instead of the oil thermostat, I put a plug. And now, with a decrease in the temperature of the entire system, additional oil cooling has lost its meaning. And you can get rid of unnecessary "dripping" moments.

[Josya]

By the way, I'm using firmware "607_rev5c_test-tcvhack-850_tweak 21.bin" with my modified "rev5b.xdf". As a result of experiments and my observations, I liked this firmware the most in terms of the response of the gas pedal. However, sometimes the gear box is stupid in economy mode... But I still drive in sport mode)

[Chuck W]

Hello everybody! The interim results are as follows. The basis for the fan operation parameters was to take XDF "REV6-RadFan-Control.xdf". From it, I copied the fan operation parameters into my working XDF. I have changed only the switching temperature so far. Instead of 102, I put 90. Now the fan turns on at 91 degrees Celsius. Works out 50 seconds. During this time, the temperature of the motor becomes about 85-82 degrees. Let me remind you that earlier I replaced the thermostat by 80 degrees. Interim results suit me. But I will continue to make more precise adjustments. By the way, I completely removed the oil cooling tubes from the system, because I really don't see the point in them. Earlier I conducted an experiment and brought the oil cooling to a separate radiator. As a result, I realized that even with relatively high loads, the oil thermostat almost does not open to operating temperatures. Instead of the oil thermostat, I put a plug. And now, with a decrease in the temperature of the entire system, additional oil cooling has lost its meaning. And you can get rid of unnecessary "dripping" moments.

Glad to hear that it does work. If I remember, there were several possible settings for fan temp in that XDF. Which did you use?

I feel for the most part, the cooling system on these cars works well. We haven't had any issues in the summer months, even with the AC working. The temps here are pretty comparable to what you can see there in Kazakhstan. Both of our care are running the RN oil pan, and the irritating oil leaks are a thing of the past for us.

Thanks for the update!

[Josya]

Hello everybody! The interim results are as follows. The basis for the fan operation parameters was to take XDF "REV6-RadFan-Control.xdf". From it, I copied the fan operation parameters into my working XDF. I have changed only the switching temperature so far. Instead of 102, I put 90. Now the fan turns on at 91 degrees Celsius. Works out 50 seconds. During this time, the temperature of the motor becomes about 85-82 degrees. Let me remind you that earlier I replaced the thermostat by 80 degrees. Interim results suit me. But I will continue to make more precise adjustments. By the way, I completely removed the oil cooling tubes from the system, because I really don't see the point in them. Earlier I conducted an experiment and brought the oil cooling to a separate radiator. As a result, I realized that even with relatively high loads, the oil thermostat almost does not open to operating temperatures. Instead of the oil thermostat, I put a plug. And now, with a decrease in the temperature of the entire system, additional oil cooling has lost its meaning. And you can get rid of unnecessary "dripping" moments.

Glad to hear that it does work. If I remember, there were several possible settings for fan temp in that XDF. Which did you use?

I feel for the most part, the cooling system on these cars works well. We haven't had any issues in the summer months, even with the AC working. The temps here are pretty comparable to what you can see there in Kazakhstan. Both of our care are running the RN oil pan, and the irritating oil leaks are a thing of the past for us.

Thanks for the update!

Glad to hear that it does work. If I remember, there were several possible settings for fan temp in that XDF. Which did you use?

I feel for the most part, the cooling system on these cars works well. We haven't had any issues in the summer months, even with the AC working. The temps here are pretty comparable to what you can see there in Kazakhstan. Both of our care are running the RN oil pan, and the irritating oil leaks are a thing of the past for us.

Thanks for the update!

I just changed the fan trigger temperature in the settings Coolant temp for fan speed 1 changed to 90C, Coolant temp for fan speed 2 changed to 100C,etc. With a difference of about 10 degrees. The fan operation time was left unchanged, as long as this time is enough for successful cooling.

I will explain my decision to lower the operating temperature of the motor. I want to say right away that the parameters of gas emissions have remained the same, tested on the stand (if someone is worried about the environment).

I have experienced problems with antifreeze leakage during the warmer months. I changed the pipes to high-quality ones - Gates, etc., but the problem did not go away. I changed the lid of the expansion tank, pre-check for actuation at a pressure of 1.5 atmospheres. I was also stressed by the rapid degradation of the rubber band of the oil pump, increased oil fumes (the oil corresponds to the parameters of volvo).

Plus in our region in the summer months there is a temperature of up to 45 Celsius degrees in the shade. Plus our region has mountains. And we often stand in traffic jams. Last year there was an unpleasant case when the battery overheated and was damaged, which caused a fire in the engine compartment.

Further, I was based on observations in the operation of the Nissan engine (I used to have a Nissan), which never had problems with oil leaks due to oil seals, and never had problems with cooling (the operating temperature of the coolant is about 87). I also addressed my friends who own a Toyota with large volumes of 3.5 liters engines, they also had no problems with cooling due to the low operating temperature of the engine. All these factors led me to experiment. During which the Volvo engine operating temperature of 90+- degrees turned out to be normal. I got rid of the coolant leaks.

I also saw that the increased temperature of the motor leads to slag formation and liquification of oil in the motor. I.e. in this case I do not see any disadvantages (except for the rapid obsolescence of the fan). In general, I wanted to redo the fan control circuit using a PWM controller, for more precise regulation of the motor operation parameters.

If you have any comments on the correctness of the choice of the solution, then please do not hesitate to say them.

[Chuck W]

A PWM option for fan control would be a great upgrade.

Can you post a screen shot of which fan parameter you changed? Like I mentioned, I recall several different fan control parameters.
Perhaps one of them could also be used to turn on the fan in low-speed mode (like when the AC is engaged) giving at the very least a two-step option in fan speeds (even for cooler months).

[Josya]

A PWM option for fan control would be a great upgrade.

Can you post a screen shot of which fan parameter you changed? Like I mentioned, I recall several different fan control parameters.
Perhaps one of them could also be used to turn on the fan in low-speed mode (like when the AC is engaged) giving at the very least a two-step option in fan speeds (even for cooler months).

Yes, of course. I can. I think it is possible to additionally configure the fan to turn on when using an air conditioner. But it will turn on normally at the first or second speed (if you have 2 speeds of course). Smoother regulation is possible only through PWM.

I also have a question for you. Maybe you have a firmware for this XDF? REV6

volvo2.jpg (19.02 KiB) Viewed 1299 times

volvo3.jpg (24.96 KiB) Viewed 1299 times

[Chuck W]

The fan already turns on low speed when the AC is engaged. I was wondering if it could be also be enabled at a different temp than the high-speed.

Is fan speed 1 for the low speed and fan speed 2 for the high-speed of the stock fan set-up?

I think the version of this XDF that I have is rev6.

[Yuno]

Slightly on topic question here Anyone here have any idea where Volvospeed went? I'm trying to start learning how tuning works, and have no access to that Tuners Rejoice topic. I really don't wanna just go in blind and complete mess anything up, and that topic had so much info in it.

Any other resource I can use to get started with tuning besides the fandom, and using the search bar on volvo forums and praying?

[Chuck W]

Slightly on topic question here Anyone here have any idea where Volvospeed went? I'm trying to start learning how tuning works, and have no access to that Tuners Rejoice topic. I really don't wanna just go in blind and complete mess anything up, and that topic had so much info in it.

Any other resource I can use to get started with tuning besides the fandom, and using the search bar on volvo forums and praying?

It's still there.

If the landing page is messed up, you can still get to the forums from the "Browse" pull-down menus in the upper left.

All the info is still there, but the search doesn't appear to work well any longer.

The M4.4 Wiki pages has all you need to get started with flashing/initial tuning. That's all I used to start. I went to the forums when I had other more detailed questions. Did my first flash/M4.4 conversion using info from the Wiki.

[Yuno]

Slightly on topic question here Anyone here have any idea where Volvospeed went? I'm trying to start learning how tuning works, and have no access to that Tuners Rejoice topic. I really don't wanna just go in blind and complete mess anything up, and that topic had so much info in it.

Any other resource I can use to get started with tuning besides the fandom, and using the search bar on volvo forums and praying?

It's still there.

If the landing page is messed up, you can still get to the forums from the "Browse" pull-down menus in the upper left.

All the info is still there, but the search doesn't appear to work well any longer.

The M4.4 Wiki pages has all you need to get started with flashing/initial tuning. That's all I used to start. I went to the forums when I had other more detailed questions. Did my first flash/M4.4 conversion using info from the Wiki.

I'll give it a shot just using the fandom page for now.


I am not able to access anything at all on Volvospeed.com. I can hover over that forum dropdown and see the sub sections, but all lead to the same broken page with "Something went wrong" in the middle. Tried using Chrome, Edge, and Opera. Any links I open from the fandom are the same


I know this isn't the tech support area of MVS, and you aren't here to be a support agent, but I don't know how your accessing that forum.