Fan not workin

[gover87]

Can some 1 plz tel me how to test the fan on my mk3 gti 16v, it doesnt come on wen the engine is hot. It doesnt overheat but stil want the fan workin lol

[AlexMozza]

Turn it on and leave it running. Don't drive it, after about 20 mins the fan should just start

Edit - Keep an eye on the temp as you dont want it to Over Heat :O

[gover87]

Ok al try that, also i have unpluged the air mass sensor and it has stopd the lumpy idling etc but wot does this mean? I gues u cnt just leave it unplugged

[AlexMozza]

Could give the TB a clean/ check if there's anything in the filters?

[gover87]

Sorry bt wots the tb? Also the filters are all clean did that the utha day m8. Does it hurt 2leave it unplugd? Sorry if its a stupid question, it has given it more power in lower revs aswel :-)

[AlexMozza]

TB - Throttle Body.
The Air Mass, allows the ECU to adjust how much fuel is needed to mix with the air, without it it dumps to much petrol in and that could damage the CAT if left for a while

[dom]

I'd plug your air mass sensor in and get it replaced asap, tb = throttle body, give it a good clean with carb cleaner there's a guide on here somewhere if you search for it.

As for your fan i'm pretty sure mine kicks in when the oil temp hits 104  

[AlexMozza]

For a New air mass filter, check the classified, someone prob have one there for next to nothing

[gover87]

Oryt its nt bin at that temp yet lol, and  il try them utha things cheerz lads

[Wayne]

Ok al try that, also i have unpluged the air mass sensor and it has stopd the lumpy idling etc but wot does this mean? I gues u cnt just leave it unplugged

Nope needs replacing