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Thread: p0100 fault code and overheating problem

  
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    p0100 fault code and overheating problem

    right well today i got stuck in a traffic jam. my headgasket has jsut been replaced so i ruled that out pretty much straight away enless there is a problem with that but no milky substance etc.
    so i thought maybe it could be the thermostat but basically what happens is

    when moving the temperture stays between 80-92 and then as soon as you stop within 5 mins of being stopped it then goes from 85 straight up to 100 and then over 100 if you stay unmoved anylonger?

    anyone else had this problem.

    so then i thought i would try the fault code thingy with brake and acclerator pedal and it came up with fault code p0100 then i have looked now and thats a aitflow meter fault code but there are no syptoms i.e rough idle etc but i have extended the wires but doesnt seem to not be workin as it still pulls boosts and drives as it should accept for the overheating problem

    also could this overheating problem just be temp sender problem?

    also the other thing is that the car only has 2 litres on antifreeze in it at the moment is this enough for a Z20LET? as i thought maybe there was a bit of water had frozen in the rad pipes causing a blockage?

    anyone shed any light on this? if so help would be greatly appreciated!

    thanks
    MK1 Focus RS Sleeper

    GT28, Tubular Manifold, Pro Alloy FMIC, 3inch Turbo Back

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    2 litres should be enough antifreeze i think, did the engine actually get hot or is it a temp gauage fault? could have been a slight blockage due recent weather

    also the fault code could be an old one unless the eml is on at the mo
    2006 Astra VXR, Flame Red, 19's, AFL, Cruise Control, CD70 + Aux in, CID, Bluetooth, Powerfold Mirrors, DDS/TPMS, Sight & Light, Check Control, Speed Locking

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    Gaz GSi's Avatar
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    is your fan cutting in?

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    how will i test if its the sender mate?

    is the fan at the front of the rad just purely for aircon or is it too cool the engine down as i have a slimline fan with my FMIC kit but it wasnt on when the car was over 100 degrees?
    MK1 Focus RS Sleeper

    GT28, Tubular Manifold, Pro Alloy FMIC, 3inch Turbo Back

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    the rear fan is cutting in mate yes but not sure of tempretures when its cuttin in will have a check tomorrow will eave it running and see what temp it comes on at

    thanks
    MK1 Focus RS Sleeper

    GT28, Tubular Manifold, Pro Alloy FMIC, 3inch Turbo Back

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    both fans control the engine cooling so personally i think it could be related to the slimline

    how long has the slimline been fitted and how was it wired in? has it ever cut in?

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    urmm my dad wired it in but i have never had a problem with this before hence why i thought it may not be that as i have had it fitted about 2-3 months.

    the fan did used to kick in maybe the connectors have come out?

    the back fan is still workin so would this not keep it cool on its own?
    MK1 Focus RS Sleeper

    GT28, Tubular Manifold, Pro Alloy FMIC, 3inch Turbo Back

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    both fans are used in conjunction with each other to cool the engine so the rear fan on its own is not gonna be anywhere near as effective as both

    nor the addition of a slimline i cant imagine would be any good either compared to the original... id advise checking the slimline asap to check all is ok

    im assuming once the temp hits 92 then the rear fan kicks in but it isnt providing enough airflow to cool therefore just keeps rising .....

    then again this aint my forte so maybe best i step aside and wait for the proper experts

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    on mine both fans kick in at a low speed to start with but i have both standard fans fitted with an fmic
    2006 Astra VXR, Flame Red, 19's, AFL, Cruise Control, CD70 + Aux in, CID, Bluetooth, Powerfold Mirrors, DDS/TPMS, Sight & Light, Check Control, Speed Locking

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