Car overheating - Page 2

chipsceola · 23rd January 2012, 13:52

profile says 2.0 litre V6
Chips

SD1too · 23rd January 2012, 15:57

Quote:

Originally Posted by zola66

Ok, no water/coolant loss, drove the car for about 4 miles temp gauge stayed in centre of dial, fans come on so-far-so-good, drove the car about 2 hours later same distance and car started to overheat, gauge 3/4 mark and above, the only way it seemed to drop is having interior fan on full blast on hot, the A/C is manual...

Thanks for this Colin. I think you should carry out some systematic checking.

Does your manual air conditioning have a windscreen 'demist' button? If so, when it is pressed does the heater blower operate at maximum speed? If yes, can you press this 'demist' button after starting the engine from cold and walk around to the radiator grille and tell us whether you can hear or see the engine cooling fan running.

When the engine is cold remove the expansion tank cap. Look into the tank through the filler neck. Can you see a platform with 'max' written on it? If so, your coolant is low.

When the water pump was "checked" did the garage drain and refill the coolant? If so, they probably didn't do it properly.

Please report back Colin.

Simon.

zola66 · 23rd January 2012, 18:07

Hi Simon

not sure how the garage checked the pump, also I dont have the demist button, just the basic one for the rear window and mirrors.

zola66 · 23rd January 2012, 18:08

coolant is about 5mm above the max level with engine cold.

SD1too · 23rd January 2012, 18:20

Quote:

Originally Posted by zola66

I don't have the demist button, just the basic one for the rear window and mirrors.

O.K. In that case we can check your engine cooling fan another way. Look at the 'How to ...' for Instrument Pack Diagnostics. This will tell you how to get a digital display of the actual coolant temperature. When it reads 100 degrees your fan should start at the slow speed. The best way to arrange this is to let the engine idle after returning home after a run.

Quote:

Originally Posted by zola66

coolant is about 5mm above the max level with engine cold.

That's fine.

Simon.

zola66 · 25th January 2012, 09:51

Ok, Im going with the cheaper option first and have a coolant flush and the matrix cleaned out...will keep you posted

23rd January 2012, 13:52	#11
chipsceola This is my second home Jaguar XF 3.0D Join Date: Nov 2010 Location: Southampton Posts: 4,364 Thanks: 119 Thanked 509 Times in 426 Posts	profile says 2.0 litre V6 Chips

23rd January 2012, 18:07	#13
zola66 Avid contributor rover 75 classic se Join Date: May 2008 Location: Surrey Posts: 249 Thanks: 10 Thanked 6 Times in 5 Posts	Hi Simon not sure how the garage checked the pump, also I dont have the demist button, just the basic one for the rear window and mirrors.

23rd January 2012, 18:08	#14
zola66 Avid contributor rover 75 classic se Join Date: May 2008 Location: Surrey Posts: 249 Thanks: 10 Thanked 6 Times in 5 Posts	coolant is about 5mm above the max level with engine cold.

25th January 2012, 09:51	#16
zola66 Avid contributor rover 75 classic se Join Date: May 2008 Location: Surrey Posts: 249 Thanks: 10 Thanked 6 Times in 5 Posts	Ok, Im going with the cheaper option first and have a coolant flush and the matrix cleaned out...will keep you posted