Water temp sender calibration

[Tony C]

having a few issues with the temp sender calibration.
dnb did the original msq along with temp sender settings etc,
I know he is busy at the moment as not heard from him,
so thought i would ask for a bit of help in here,

when driving the water temp reading on MT dropped to 62-63c
we changed the stat from an 82 to a 88C one,
the water temp gauge on MT while driving now bounces between 71 and 72C
also when stationary which we only noticed this weekend,
the fans are operated via a 88-92C switch,
when the fans cut in MT temp gauge reads 82C, (sometimes 84-86C)
when i was running  firmware 1.0.73 (think thats right) stationary with fans coming on and off MT would read 94-96C
how do i re do the temp settings as on the old firmware you could change the values in a drop down window, but not on 1.1.44 :-(

[gunni]

Do you mean change the temp the fan goes on or change the sensor calibration so it´s more like what you had?

[Tony C]

change the sensor calibration mate,
the fan is run via a seperate switch,

[gunni]

You can do that using the vemstune program and select different patch files for the air and coolant temp sensors.
Tools- Firmware - Upload firmware

What you have now is something dnb will be able to answer, then you need most likely a patch that has a lower resistance value
Upload that until the readings are right.

You can measure the resistance when air or coolant temp is about 20C° I think it was. At least that will give good indication of what
file to go for.

[Tony C]

thank you mate.

[GintsK]

Newer firmwares have 17-point user adjustable calibration curves for temperature senders.
Most impotrtant detail for me - it works higher than 102 degC! And it means possibility to inform driver and protect engine with piggy rich.

[Tony C]

that sounds interesting,
dnb has the coolant sensor settings from his car which he is sending to me,
we run identical sensors so fingers crossed it reads correct now.

[Tony C]

can some one help me :-(
how the hell do you upload new coolant table settings?
v 1.1.44 as i need to get this sorted before the car is put away for the winter,

and can i use the settings from v 1.0.73? as that read near correct for the car.
if so how do i extract the needed files, etc.

thanks every one :-)

i use MT too.

[MWfire]

just use
firmware-uploader.bat
and selecet mat/clt curve(2063_256 is common).

[Tony C]

is that using megatune mate?

[MWfire]

is that using megatune mate?

yes. Take a look in megatune folder for that.

[Tony C]

i just had a look in the folder i have the firmware in,
and it says,

using comunication port1
using terminal speed 19200
default airfile is airXfactor_2063_256.air
default cltfile is cltfactor_2063_256.clt

what would you like to do?
Choice
1.select com settings,
2 dload config,
3 burn fw 12x12
4 burn fw 16x14
5 select air file
6 select clt file
7 quit

have i got the default files loaded already then?#

[Tony C]

dnb sent me this over in a zip file,
cltfactor_dnb_griff.clt,

which when opened with notepad gives this,

# Generated by dnb for TVR Griffith, type=clt
# modelparam = 1900 Ohm  256 aref
# ROVER V8 std Lucas sensor.
:10030000FFFFFFFFFFFFFFFFFFFFFCF8F5F2EFEC41
:10031000E9E6E3E1DEDCD9D7D4D2D0CDCBC9C7C57D
:10032000C3C1BFBDBCBAB8B6B4B3B1B0AFAEACAB6D
:10033000AAA8A7A6A4A3A1A19F9E9D9C9B9A9998B9
:100340009796959493929190908F8E8D8C8B8B8AAB
:10035000898887878685848483828181807F7F7E68
:100360007D7C7C7B7A7A797878777676757474730D
:1003700072727170706F6E6E6D6C6C6B6A6A6968A8
:10038000686766666564646363626161605F5F5E3F
:100390005D5D5C5B5B5A5A595858575656555454D4
:1003A0005353525151504F4F4E4D4D4C4C4B4A4A66
:1003B00049484847464645444443424241403F3FFE
:1003C0003E3D3D3C3B3A3A393837363635343332A8
:1003D0003130302F2E2D2C2B2A292826252423227C
:1003E000211F1E1D1B1A1917161413110F0E0C0AAC
:1003F00009070503010000000000000000000000E4

how do i upload that :-(

[MWfire]

and for clt select 1900_256

[Tony C]

Cheers for the help mate,

ok when it asks what file and i type 1900_256
i gather hit enter then, does it upload automaticly to the ecu then??
or do i have to do anything???
then does it shut the window down after upload??
better ask after the cock up i made downloading the config by closing it when it stopped and never waited for the tables to download :-(