Nissens Radiator Running Hotter

matt3743 · 13-09-2015, 10:14 PM

Just after a bit of guidance. Had a Nissens radiator fitted. New coolant, properly bled etc. Previously with the old (f*cked) rad, the temp would sit bang halfway at all times. Now I notice the temp will rise to between half and 3/4 before dropping back to halfway when driving. When stationary the temp will sit on 1/2. Seems odd, I wouldn't expect it to run hotter or fluctuate as it does when moving. Any ideas?

System has been bled through only things I can think are

Re-Bleed system
Radiator cap? Although it's the new one that came with the rad.

I'm at a loss as to why this would be running hotter than the old one which was ruined

**mattrallye** · 13-09-2015, 10:18 PM

I would re bleed it mate from the 3 bleed points. Try that first.

matt3743 · 13-09-2015, 10:33 PM

Yeah I will try it tomorrow. Seems very odd it runs hotter. But it fluctuates in the way I'd expect it to if it had a small airlock

It's the push and turn metal type rad cap. I've read of people having issues with these.

13-09-2015, 10:14 PM	#1
matt3743 SOON TO BE FREELOADER - PLEASE JOIN UP NOW! Join Date: Feb 2012 Location: Bristol Posts: 95	Nissens Radiator Running Hotter Just after a bit of guidance. Had a Nissens radiator fitted. New coolant, properly bled etc. Previously with the old (f*cked) rad, the temp would sit bang halfway at all times. Now I notice the temp will rise to between half and 3/4 before dropping back to halfway when driving. When stationary the temp will sit on 1/2. Seems odd, I wouldn't expect it to run hotter or fluctuate as it does when moving. Any ideas? System has been bled through only things I can think are Re-Bleed system Radiator cap? Although it's the new one that came with the rad. I'm at a loss as to why this would be running hotter than the old one which was ruined

13-09-2015, 10:18 PM	#2
mattrallye 106 RALLYE REGISTER MEMBER Join Date: Dec 2010 Location: Worcester Posts: 5,563	I would re bleed it mate from the 3 bleed points. Try that first. __________________ Now running a 16v with 180bhp and Sadev sequential. Partner at Trackspec - Performance parts for enthusiasts info@trackspec.co.uk www.trackspec.co.uk

13-09-2015, 10:33 PM	#3
matt3743 SOON TO BE FREELOADER - PLEASE JOIN UP NOW! Join Date: Feb 2012 Location: Bristol Posts: 95	Yeah I will try it tomorrow. Seems very odd it runs hotter. But it fluctuates in the way I'd expect it to if it had a small airlock It's the push and turn metal type rad cap. I've read of people having issues with these. Last edited by matt3743; 13-09-2015 at 10:36 PM.

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