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Model specific boards => Golf mk3 => Topic started by: sharki786 on 18 October 2011, 10:58

Title: thermostat on the mk3 AGG engine
Post by: sharki786 on 18 October 2011, 10:58

ive searched but still seem confued. need to change the thermostat on my AGG, is it located under the water pump? or under the PAS pump? also my car today took over 10 mins to get to the 1st minimum line and when the temps fully on the half mark the top pipe is hot and bottom is warm-hot (always been like this) will changing the thermostat sort this out? also how do i get to it? need to know sa i will attemp this today and need to be sure dont want any hickups.

thanks all

Title: Re: thermostat on the mk3 AGG engine
Post by: justalex81 on 18 October 2011, 11:11

don't know exactly where the thermostat is located but i'm pretty sure that the thermostat is your problem and replacing it will solve the problem

Title: Thermostat on my mk3 AGG engine
Post by: sharki786 on 18 October 2011, 11:12

P.s it has the common symptoms of raising to 90 in traffic and then drops to 70 when i start driving.

Title: Thermostat on my mk3 AGG engine
Post by: sharki786 on 18 October 2011, 11:13

Cheers alex. Did you read my last reply to this post? Of the temp on 90 when in traffic and then drops to 70 when on the move.

Title: Re: thermostat on the mk3 AGG engine
Post by: Wayne on 18 October 2011, 11:37

Could be an air lock.

Title: Re: thermostat on the mk3 AGG engine
Post by: javalin on 18 October 2011, 11:43

thermostat is below the water pump and behind the PAS pump.  You don't need to disconnect the PAS to change the t-stat, just move some pipes out of the way.

see dans guide - http://faculty.ccp.edu/faculty/dreed/Campingart/jettatech/coolingmaint/index.htm (http://faculty.ccp.edu/faculty/dreed/Campingart/jettatech/coolingmaint/index.htm)

James

Title: Re: thermostat on the mk3 AGG engine
Post by: sharki786 on 18 October 2011, 13:04

cheers javalin. should i get the parts from TPS? i can get a febi t-stat for £6.30 +vat
also what mix of water and coolant should i use? 50/50, or 60 water & 40 coolant?
going to get t-stat, G12 coolant (this any good for my AGG), expansion bottle & both belts

Title: Re: thermostat on the mk3 AGG engine
Post by: javalin on 18 October 2011, 13:10

get a VW stat or www.vwspares.com (http://www.vwspares.com)

50/50 coolant and water, and its the G12 I believe.   Get geninue stuff - not generic!!

You don't need to change the expansion tank unless you particularly want to, or its particularly gunked up.

J

Title: Re: thermostat on the mk3 AGG engine
Post by: sharki786 on 18 October 2011, 16:02

hi mate,

yes its all brown so thats why i want to change it. but as cars running fine atm i might just leave it for now, going to get parts from TPS (they genuine parts)

thanks for you help mate and everyone else who helped out.

Cheers people

Title: Re: thermostat on the mk3 AGG engine
Post by: harlemex on 18 October 2011, 22:30

If its all brown, you might want to invest in some rad flush aswell.  :shocked:

Title: Re: thermostat on the mk3 AGG engine
Post by: Seanl on 18 October 2011, 22:56

Just flush it through with a garden hose. Definately worth getting new coolant, its only about 14 quid from vw for two 1.5 litre bottles. Then top up with water.