19 replies to this topic

[Yella]

For some reason when I start my car the engine coolant light (the one that looks like a thermometer in some wavy lines!) comes on every time and then flashes forever. Usually if I give it 2 minutes and restart the engine it's fine. Awesome replaced the coolant temperature sensor because it was corroded about 4 months ago. It seems to drive fine. Any ideas?

EDIT - Apologies it's the Octy. Can't get used to being a 2 Skoda family!! The wife still refers to us having 2 cars, a Skoda and a Fabia.

Edited by Yella, 16 January 2010 - 00:05.

[Steevie Wonder]

Yella, on 16 January 2010 - 00:03, said:

For some reason when I start my car the engine coolant light (the one that looks like a thermometer in some wavy lines!) comes on every time and then flashes forever. Usually if I give it 2 minutes and restart the engine it's fine. Awesome replaced the coolant temperature sensor because it was corroded about 4 months ago. It seems to drive fine. Any ideas?

EDIT - Apologies it's the Octy. Can't get used to being a 2 Skoda family!! The wife still refers to us having 2 cars, a Skoda and a Fabia.

Check the header tank, the sensor in that goes after a while, also if the coolant level is low it can cause it to react like your describing.

Steve

[David 8]

Give the prongs in the bottle a scrape with something, if that doesn't work replace the bottle, only about a tenner for a new one, five minutes too fit.




HTH

[allytech]

Yella, on 16 January 2010 - 00:03, said:

For some reason when I start my car the engine coolant light (the one that looks like a thermometer in some wavy lines!) comes on every time and then flashes forever. Usually if I give it 2 minutes and restart the engine it's fine. Awesome replaced the coolant temperature sensor because it was corroded about 4 months ago. It seems to drive fine. Any ideas?

EDIT - Apologies it's the Octy. Can't get used to being a 2 Skoda family!! The wife still refers to us having 2 cars, a Skoda and a Fabia.

You ll need a new header tank, no great drama, they are around the £30 mark from memory and take about 5 mins to fit

[AwesomeSarah]

allytech, on 20 January 2010 - 21:53, said:

You ll need a new header tank, no great drama, they are around the £30 mark from memory and take about 5 mins to fit

Hi
Yes did my fella`s one on his Octy last year
Only took a few mins to do , and we lost no coolant eiither

IIRC 1Jo 121 403B is the part number and cost £10 ish for the part

Not a big job , and stops the noise and lights for good
Sarah

[KenONeill]

2 minutes!? Mine only does it sometimes, if it's cold enough to trip the MFD to ambient temp mode, and will go away if I run the engine for 30s, stop the engine and switch right off, then restart.

[Yella]

KenONeill, on 21 January 2010 - 12:48, said:

2 minutes!? Mine only does it sometimes, if it's cold enough to trip the MFD to ambient temp mode, and will go away if I run the engine for 30s, stop the engine and switch right off, then restart.

Well maybe not 2 minutes then? But if I start the engine and it lights up then I immediately turn it off and restart, it usually comes back on again. What I tend to do is drive to the end of the estate and then restart the engine.

Cheers for the replies though guys. It's got it's 100k service very soon so I'll leave it until then unless you think it needs remedying sooner. 98200 and counting now!!

[KenONeill]

Mine's been doing it over a year now, and hasn't got annoying enough for the prong scraping trick!

[ap0gee1978]

Similar to the faulty oil pressure sensor I had done on my wife's car recently, the only risk you run by ignoring the light is if you really DO have a problem!  Short of checking under the bonnet every time you get in, you're probably alright carrying on like you have, stopping and restarting the car after you've driven a short distance.

[KenONeill]

An interesting perspective; If you can tell me how the engine can overheat within 20s of being fired up after standing overnight, I'll conceed you have a point about the coolant sensor.

[ap0gee1978]

Well, my wife's did a handful of short runs sans liquide de refroidissement last winter after I messed up fitting a new thermostat.  No lasting damage has become apparent in the meantime...

[KenONeill]

Ah, I was under the impression it was a temperature sensor, not a level sensor.

[ap0gee1978]

KenONeill, on 21 January 2010 - 15:48, said:

Ah, I was under the impression it was a temperature sensor, not a level sensor.

Such is the way with multi-purpose warning lights!  'Coolant' covers temperature and level; 'Oil' covers pressure and level; 'EPC' / 'glowplug' covers most of the rest of the sensors.  Any wonder I have a code reader in the car, and a copy of VAG-COM on the laptop?!?!

[alex_d9]

Hi, i am having the same problem but in addition to this the fuel level indicator also doest work while the temp. warning light is on.  Has anyone experienced this problem with the fuel level indicator as well while the temperature parning light is flashing?

[Petardo]

Like the other guys said you need a new header tank. The sensor is built into it. Had mine done last year for about 35 quid

[robk1]

AwesomeSarah, on 21 January 2010 - 11:39, said:

Hi
Yes did my fella`s one on his Octy last year
Only took a few mins to do , and we lost no coolant eiither

IIRC 1Jo 121 403B is the part number and cost £10 ish for the part

Not a big job , and stops the noise and lights for good
Sarah

Not always for good Sarah. Did our Fab a year or so back & it's just started again

[devonutopia]

robk1, on 31 January 2013 - 21:12, said:

Not always for good Sarah. Did our Fab a year or so back & it's just started again

and the bottle in mine has been fine in my car since 2001!  

[robk1]

devonutopia, on 31 January 2013 - 21:15, said:

and the bottle in mine has been fine in my car since 2001!  

Lucky old you

[TissMe]

robk1, on 31 January 2013 - 21:12, said:

Not always for good Sarah. Did our Fab a year or so back & it's just started again

Oh yes , it is still going strong now
Sarah

[KenONeill]

TissMe, on 08 April 2013 - 20:20, said:

Oh yes , it is still going strong now
Sarah

Hiya  

Well, I did the prongs on mine Winter 2011/12, and not a flash since.