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engine coolant temp sensor

1010 Views 7 Replies 3 Participants Last post by  hosky, 
P
Hello all and first happy new year to all. im just looking for some advice, i have recently purchased a V A G test to look at the fault on my mk4 1.4 petrol golf the tester came up with code: p0118 engine colant temp sensor g62 signal too high. are these sensors hard to replace and where on the engine are they ?

any help be much appreciated

thanks paul[:D]
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H
These sensors are easy to replace paul, Just find the sensor which will be housed in the thermostat housing pulll off the multi plug,,, undo your expansion cap to release any pressure,, put cap back on, remove the sensor retainging clip and pull out sensor ( and make sure old rubber seal comes out with it)

*please note coolant will piss out at this point*

put new sensore with new rubber seal in re-fit retaning clip plug back on,,, start up car and check its not leaking,, remove expansion cap and top up with coolant

put heaters to hot middle air vents and about 3 0r 4 speed setting to bleed cooling system,

once air is hot in vents put expansion cap back on and wait for cooling fan to cut in...

erase code job done

Lee
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madman
These sensors are easy to replace paul, Just find the sensor which will be housed in the thermostat housing pulll off the multi plug,,, undo your expansion cap to release any pressure,, put cap back on, remove the sensor retainging clip and pull out sensor ( and make sure old rubber seal comes out with it)

*please note coolant will wee wee out at this point*

put new sensore with new rubber seal in re-fit retaning clip plug back on,,, start up car and check its not leaking,, remove expansion cap and top up with coolant

put heaters to hot middle air vents and about 3 0r 4 speed setting to bleed cooling system,

once air is hot in vents put expansion cap back on and wait for cooling fan to cut in...

erase code job done

Lee
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How does that help? I would say the best way to get air out is to drain the system and refill slowly. Then run the car up to a highish temp with the reservoir cap off.
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P
[:D] Thank you lee for the info it will help loads can i ask where these sensors are found on the engine

thanks

paul
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P
also thanks hosky for your info to thanks lads
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H
By having the heaters on hot its draining the heater matrix of air and replacing it with coolant thus removing any air bubbles...
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madman
By having the heaters on hot its draining the heater matrix of air and replacing it with coolant thus removing any air bubbles...
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As long as the heater is set to hot it will be fine as this will let water pump round. The fan wont make any difference AFAIK[C]
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H
Only reason i set ti 3 or 4 is so i can feel the heat as its cold in our workshop :)
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