B230FK/FT PTC air pre-heater

Chooch84 · Nov 20th, 2017, 18:50

Hi,

I'm trying to work out if I need the air Pre-heater resistor that is located on the vacuum line between the air filter and the turbo.

Does it make a noticeable difference to the engines running?

I've had a brief look at the wiring diagram and it looks as if it's controlled by pin 9 from the LH2.4, does anyone know what conditions are required to make the pre-heater turn on? It looks to be linked to the IAC, is that correct?

Many Thanks,

T

Pete940 · Nov 20th, 2017, 19:54

There's a little summary in here
https://www.volvoclub.org.uk/faq/Eng...html#PTCNipple

Chooch84 · Nov 20th, 2017, 20:34

"The heater is to vaporize the moist air that comes out of crankcase after start up and while driving in very cold weather"

Hmmm, would be great to know what they class as "very cold weather..." Basically, it should be safe to say that I don't really need to concern myself about it when I walk away from the stock ecu's...

I know that BMW M47TU2 diesel engines tend to get a build up of emulsified oil in the oil separator during short trips during the winter, but that doesn't really worry me too much...

Laird Scooby · Nov 26th, 2017, 18:39

Quote:

Originally Posted by Chooch84

I know that BMW M47TU2 diesel engines tend to get a build up of emulsified oil in the oil separator during short trips during the winter, but that doesn't really worry me too much...

Doesn't worry me either - i don't drive a BMW lol!

Joking aside, that is likely with any engine, particularly diesels and especially modern diesel as they take so long to warm up. I have in fact heard a rumour that most diesels these days are designed to only get fully warm when being thrashed up the motorway!

Nov 20th, 2017, 18:50	#1
Chooch84 940 Noob Last Online: Today 20:42 Join Date: Jul 2015 Location: Birmingham	B230FK/FT PTC air pre-heater Hi, I'm trying to work out if I need the air Pre-heater resistor that is located on the vacuum line between the air filter and the turbo. Does it make a noticeable difference to the engines running? I've had a brief look at the wiring diagram and it looks as if it's controlled by pin 9 from the LH2.4, does anyone know what conditions are required to make the pre-heater turn on? It looks to be linked to the IAC, is that correct? Many Thanks, T __________________ 96 945 Classic 2.3 LPT with some mods... To do: Install upper brace, Catch can, install sound deadening (50% done), Fit electric leather seats, repaint! List is endless... 16 BMW 330e

Nov 20th, 2017, 20:34	#3
Chooch84 940 Noob Last Online: Today 20:42 Join Date: Jul 2015 Location: Birmingham	"The heater is to vaporize the moist air that comes out of crankcase after start up and while driving in very cold weather" Hmmm, would be great to know what they class as "very cold weather..." Basically, it should be safe to say that I don't really need to concern myself about it when I walk away from the stock ecu's... I know that BMW M47TU2 diesel engines tend to get a build up of emulsified oil in the oil separator during short trips during the winter, but that doesn't really worry me too much... __________________ 96 945 Classic 2.3 LPT with some mods... To do: Install upper brace, Catch can, install sound deadening (50% done), Fit electric leather seats, repaint! List is endless... 16 BMW 330e

Nov 20th, 2017, 19:54	#2
Pete940 Ideal Volvo Last Online: Yesterday 22:40 Join Date: Aug 2012 Location: Haydock	There's a little summary in here https://www.volvoclub.org.uk/faq/Eng...html#PTCNipple

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