Rebuilding 280 front end, few issues

[Dane Percival]

rebuilding my cupra 280 dsg put another sump and front on it, cars all running now up to temp but struggling to get the coolant around the system, not sure if it’s air locks or what, another issue the cooling fans on the back of the rad haven’t started up? How can I test if there working or not? When do they usually come on? Where’s the fuse located? One of the old fans did take a hit which stopped it spinning up.

Another one before I tackle it all the bolts for the headlights and headlight brackets are now all mixed up with others, anyone changed these an know how it all goes back together ?

Many thanks

 

[Deleted member 103408]

Sorry I have been out all day (hospital not fun) not taken the lights off but have you checked out the workshop manuals that @paddy6789 put up here, make sure you used the pre facelift version https://forums.seatcupra.net/index.php?threads/leon-mk3-official-seat-workshop-manuals-link.442353/

PS I was the guy you bought the sump off

 

[SteveGSXR600K1]

I'm sure I've read that there are 2-3 waterpumps that need activating to pump the coolant around the whole engine. I've got a feeling that this article was about the diesel engine, but may apply to petrol as well. It would be a dealer only process to activate the them.

 

[r3d]

If your fans are not activating the radiator is probably cold, check bottom and top with your hand, if none of it is hot your thermostat could be seized

 

[Dane Percival]

Got coolant going through cabin heaters working, no more air in the system I’ve left it idling for 10/15 mins but the rad fans aren’t kicking in? Any ideas

 

[Deleted member 103408]

Do you have VCDS or OBD11 To see if there are any errors being reported.

 

[Kasam1994]

I’m having the same issue cooling fans won’t spin was wondering if you got yours working


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[Dane Percival]

I’m having the same issue cooling fans won’t spin was wondering if you got yours working


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Hi mate yeah got mine going, i had all my codes (67 and counting) on the snap on computer, I had them all cleared, then had the aircon regassed, turned out if the aircons not pressurised the sensors picks it up and keep the fans off as there’s no heat being generated

 

[Kasam1994]

Ahh that would probably explain why mine isn’t spinning as I have a air con leak hopefully get that sorted and gassed up and should be fine

Thanks much appreciated


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