MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: GTIEagles on September 20, 2015, 05:26:32 pm

Title: How to replace the coolant flange
Post by: GTIEagles on September 20, 2015, 05:26:32 pm

My car has been slowly loosing coolant since I changed the inline thermostat, I initially thought that it was leaking where I changed the spring clips for jubilee clips but they all seem fine. So I had another look and sniff round and it appears to be leaking at the coolant flange above the gearbox. Has anyone tackled this job before and knows what's involved?

Title: Re: How to replace the coolant flange
Post by: dazza on September 20, 2015, 07:07:26 pm

Are you getting any coolant on the floor? I also think i may have a leak since changing the water pump, main stat and inline stat. Unless its just the coolant settling after the initial refill as i've not topped it up since.

Title: Re: How to replace the coolant flange
Post by: GTIEagles on September 21, 2015, 11:26:12 am

No coolant on the floor, just weeping from the flange itself.

Must be someone out there that has changed one before?

Title: Re: How to replace the coolant flange
Post by: Hawkes41 on October 01, 2015, 04:20:26 pm

I changed mine about a year ago. It wasn't too difficult, just quite time consuming. It's just a case of removing everything above it to get access. I removed the battery as well to make it easier. You must make sure that the o-ring is seated correctly inside the head when installing the new one! Mine wasn't so I had to take it all out again!