Is my 2.5 V6 cooked?

BaroqueMoon · 19th February 2018, 23:06

I have had the thermostat replaced about two years ago as it was running too cold. It has been perfect ever since. That is until a few days ago.
Driving at highway speeds all was normal then as we slowed to a crawl for road works it started overheating.
Coolant was forcing its way out of the cap.
I topped it up with water and after about 15 minutes of driving it happened again. I got it towed home.

I have drained the system completely, added radiator flush and at idle it runs for twenty minuted until the temp gets too high and I have to shut it down.
I have flushed the system 3 times now.
It still overheats after 20 minutes at idle.

The fan works as it should.
I replaced the O rings in the cap with viton ones about four years ago and upon inspection they still seem perfect.

Could it be a failed water pump?
Could the cap be the problem?
Could the head gasket be the issue?
Could it be cooked???

Any advice gratefully accepted.

Argh.

19th February 2018, 23:06	#1
BaroqueMoon Gets stuck in Rover 75 Saloon Join Date: Jul 2012 Location: Ballarat Posts: 937 Thanks: 576 Thanked 114 Times in 99 Posts	Is my 2.5 V6 cooked? I have had the thermostat replaced about two years ago as it was running too cold. It has been perfect ever since. That is until a few days ago. Driving at highway speeds all was normal then as we slowed to a crawl for road works it started overheating. Coolant was forcing its way out of the cap. I topped it up with water and after about 15 minutes of driving it happened again. I got it towed home. I have drained the system completely, added radiator flush and at idle it runs for twenty minuted until the temp gets too high and I have to shut it down. I have flushed the system 3 times now. It still overheats after 20 minutes at idle. The fan works as it should. I replaced the O rings in the cap with viton ones about four years ago and upon inspection they still seem perfect. Could it be a failed water pump? Could the cap be the problem? Could the head gasket be the issue? Could it be cooked??? Any advice gratefully accepted. Argh. __________________ Love my 75 and it loves me Membership Number 1703 This vehicle was the 82,624th 75 to run off the production line, out of 112,381 This vehicle was the 6,161st 75 2.5 V6 Contemporary to be made out of 8,214 This vehicle was the 9,755th 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s Last edited by BaroqueMoon; 19th February 2018 at 23:23..