andrenel
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 posted on 20/11/06 at 01:27 PM |
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zetec thermostat sensors for megasquirt
I am trying to wire up a megasquirt to my 2.0 silvertop zetec.
The thermostat housing has two sensors mounted on it , one on top and one underneath, which one of these should I connect to the megasquirt, and can
the other one be used to control the radiator fan?.
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Dusty
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| posted on 20/11/06 at 02:02 PM |
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Top one is for the ECU. The one on the bottom corner is for the temperature gauge and won't work the fan. You need a third temp sensor
effectively a temperature operated switch usualy mounted in the rad, top hose or thermostat housing to switch the fan relay.
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andrenel
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| posted on 20/11/06 at 03:31 PM |
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thanks for that,
I will use the top one.
guess I am going to have to tru easytherm as I am reluctant to mess with board.
Any other input re getting the squirt to work on my installation would be appreciated. I am using the stock zetec plennum.
I have not tried to do any of the setup for the megasquirt yet,Thought I would do all the connecting of sensors and then attempt the setup.looks like
it might take some time and fiddling
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Schrodinger
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| posted on 21/11/06 at 10:24 AM |
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What rad are you using?
The POLO rad has a mounting for a thermostat for the fan
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omega 24 v6
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| posted on 21/11/06 at 12:35 PM |
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quote:
The POLO rad has a mounting for a thermostat for the fan
Unfortuneatly thats no use for a Msquirt as it'll still be cold when the engines hot (before the thermostat opens).
As Mark said it needs a true engine (before the thermostat) reading.
If it looks wrong it probably is wrong.
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andrenel
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| posted on 21/11/06 at 04:05 PM |
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CHEERS
I am afraid I dont know what the radiator is from, I cant see any plugs to take a fan switch.
I will have to go down to corner shop and see if I can get a switch for the fan that I can tap into the plumming.
does any body know what the grey box on the side of the coil pack is, it is about the size of a match box and has 20 UF marked on it (capacitor) what
is it for?
Going to use top sensor & easy therm to recalbrate squirt
I have readings like
214 k/ohm at freezer 0
19,7 k/ ohm at body temp 37 C
2,17 k/ohm at boiling water 98 c
do these values seem right
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Schrodinger
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| posted on 22/11/06 at 08:08 AM |
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quote:
Originally posted by omega 24 v6
quote:
The POLO rad has a mounting for a thermostat for the fan
Unfortuneatly thats no use for a Msquirt as it'll still be cold when the engines hot (before the thermostat opens).
As Mark said it needs a true engine (before the thermostat) reading.
I was meaning for the fan control BTW a new rad from Sweedish, German is about £60. The top sensor in the thermostat housing IIRC is the correct side
of the thermostat so is at engine/head temp.
[Edited on 22/11/06 by Schrodinger]
[Edited on 22/11/06 by Schrodinger]
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