GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: Dan_GTi8v on 10 May 2011, 18:07

Title: flashing coolant/temp light
Post by: Dan_GTi8v on 10 May 2011, 18:07

I have an aum in my mk3 and the dash coolant light is flashing. Not sure what the coresponding light is in the mk4 but im guessing its the same :P what could be the causes? It has coolant in it and the wiring all looks ok. It flashes as soon as I start up so dont think its the engine temp as it doesnt have a chance to heat up. any ideas?

Title: Re: flashing coolant/temp light
Post by: richw911 on 10 May 2011, 19:47

Dirty contacts in the coolant bottle which makes the ECU think there is no coolant in the bottle.

Clean them or replace the bottle for £15 for a brand new one  :wink:

Title: Re: flashing coolant/temp light
Post by: Dave_IOW on 10 May 2011, 19:49

i had this problem and cleaned the sensor, 12 months on, still fine  :smiley:

Title: Re: flashing coolant/temp light
Post by: Dan_GTi8v on 13 May 2011, 18:10

sensor is clean, it stopped flashing for a bit when I took it for a test drive, but came on again a few mins later

Does the routing of the radiator pipes make a difference? I wasnt sure which way to put them on the mk3 rad so I have the top right hose going to the top of the rad and bottom left hose going to the bottom of the rad. Its an aum and a 8v GTi rad, is that the right routing and would it make a difference?