Our 1.8T running temps

ceedy · 4th May 2016, 06:38

Usually its runs around 98-99 , but today it was 105-6 max with bursts of 98-99 . is this reasonable ..

Did did have engine overheat flash up on ther IPK for moment ..

Was a little low on coolant

.. took about 1/2 pint..

Before we go into hgf panic

, Will check all over for any leaks.
Maybe a new Rad cap .
And later will give it a sniffertest .

But it runs like a sewing machine , with no other signs anywhere.. yet?

wish the dizzle got anywhere near this hot

..

Chris

valleygixer · 4th May 2016, 06:48

I'd be checking for external leaks, rad cap and air locks before you panic! Hope all is well.

rrobson · 4th May 2016, 06:57

Check your thermostat also. I've very recently had the thermostat in my 25 1.8 turbo stick closed and that got toasty

Shouldn't have any issue with 105 though, that's not too excessive by any stretch. 115 or 120 maybe.
Mine runs at a steady 88-90 but I've got a huge radiator stuck to the front.

VVC-Geeza · 4th May 2016, 10:03

88-90 here too.

T-Cut · 4th May 2016, 10:13

Mine now runs in the 88-90C band as well. This has the 'black' PRT in place of the factory fitted 'buff' version. The buff version ran around 5-8 degrees warmer across the range and had a pressure relief opening at 2000 rpm. The black stat doesn't seem to have any pressure relief. Both are nominally 88C thermostats.

Running above 100C is not normal and could be due to lack of coolant. The slow speed cooling fan must be checked too. It should trip on around 104C, but you didn't mention whether that happened. Have you done the standard 'Demist Test''?

Do you mean the red warning light flashed briefly? If so, there was a short period in the 125-130C area, which is not good. Since the warning went out, something cooled the sensor enough to pull it out of the danger zone. Presumably a slug of coolant flooded it. You may be lucky to find there's simply a cooolant leak (there are plenty of places for one). All these are well documented.

TC

ceedy · 4th May 2016, 12:25

Think I have found a trickle

, running down the front of the Block behind the Exhaust manifold .

Its not had the water checked since just after we go

t it..

and it didn't take a lot to get the level visible in the Expans tank ..

Whilst moving its in the 98-99, occasionally just over 100 , and if left running the fan comes on at about 110ish . down to 104 ..

So need to keep an eye on this !!

..

SD1too · 4th May 2016, 12:48

Quote:

Originally Posted by ceedy

... if left running the fan comes on at about 110ish .

Chris; you need urgently to check the fan using the 'demist' test as T-Cut said. It should start running at 104 degrees. If it doesn't, it's probably an open circuit resistor.

Simon

ceedy · 4th May 2016, 13:48

Shorting the Plug from the trinary switch does nothing.. no fan activity at all . ign on or off.

With car stationary with motor running , and the AC is nice and cold , and the fan goes on and off every 15 secs or so.

Pass on which fan speed that is tho ?.

The old Silver resistor is visible

.

Going to have to get number one son trained up on this as its his motor

Chris

murphyv310 · 4th May 2016, 13:59

If the fan pulses on and off with the air-con on your low speed is faulty.
A running temperature of 98-99 is too high I'd be looking for the very low 90's when driving at a steady speed.

ceedy · 4th May 2016, 14:09

Front off time then!

4th May 2016, 06:38	#1
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	Our 1.8T running temps Usually its runs around 98-99 , but today it was 105-6 max with bursts of 98-99 . is this reasonable .. Did did have engine overheat flash up on ther IPK for moment .. Was a little low on coolant .. took about 1/2 pint.. Before we go into hgf panic , Will check all over for any leaks. Maybe a new Rad cap . And later will give it a sniffertest . But it runs like a sewing machine , with no other signs anywhere.. yet? wish the dizzle got anywhere near this hot .. Chris __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's Last edited by ceedy; 4th May 2016 at 06:54..

4th May 2016, 06:57	#3
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,643 Thanks: 17 Thanked 295 Times in 218 Posts	Check your thermostat also. I've very recently had the thermostat in my 25 1.8 turbo stick closed and that got toasty Shouldn't have any issue with 105 though, that's not too excessive by any stretch. 115 or 120 maybe. Mine runs at a steady 88-90 but I've got a huge radiator stuck to the front. __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available

4th May 2016, 10:03	#4
VVC-Geeza This is my second home 2005 Connoisseur SE 1.8 Turbo,2004 45 1.8 Connoisseur and my beloved 1998 VVC Coupe. Join Date: Nov 2009 Location: Derby. Posts: 8,758 Thanks: 2,022 Thanked 1,016 Times in 739 Posts	88-90 here too. __________________

4th May 2016, 10:13	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Mine now runs in the 88-90C band as well. This has the 'black' PRT in place of the factory fitted 'buff' version. The buff version ran around 5-8 degrees warmer across the range and had a pressure relief opening at 2000 rpm. The black stat doesn't seem to have any pressure relief. Both are nominally 88C thermostats. Running above 100C is not normal and could be due to lack of coolant. The slow speed cooling fan must be checked too. It should trip on around 104C, but you didn't mention whether that happened. Have you done the standard 'Demist Test''? Do you mean the red warning light flashed briefly? If so, there was a short period in the 125-130C area, which is not good. Since the warning went out, something cooled the sensor enough to pull it out of the danger zone. Presumably a slug of coolant flooded it. You may be lucky to find there's simply a cooolant leak (there are plenty of places for one). All these are well documented. TC Last edited by T-Cut; 4th May 2016 at 10:18..

4th May 2016, 12:25	#6
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	Think I have found a trickle , running down the front of the Block behind the Exhaust manifold . Its not had the water checked since just after we got it.. and it didn't take a lot to get the level visible in the Expans tank .. Whilst moving its in the 98-99, occasionally just over 100 , and if left running the fan comes on at about 110ish . down to 104 .. So need to keep an eye on this !! .. __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's

4th May 2016, 06:48	#2
valleygixer Gets stuck in MG ZT 1.8 t Join Date: Mar 2013 Location: Torfaen Posts: 656 Thanks: 97 Thanked 44 Times in 43 Posts	I'd be checking for external leaks, rad cap and air locks before you panic! Hope all is well.

4th May 2016, 13:48	#8
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	Shorting the Plug from the trinary switch does nothing.. no fan activity at all . ign on or off. With car stationary with motor running , and the AC is nice and cold , and the fan goes on and off every 15 secs or so. Pass on which fan speed that is tho ?. The old Silver resistor is visible . Going to have to get number one son trained up on this as its his motor Chris __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's

4th May 2016, 13:59	#9
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	If the fan pulses on and off with the air-con on your low speed is faulty. A running temperature of 98-99 is too high I'd be looking for the very low 90's when driving at a steady speed. __________________ Cheers from Trevor MM0KJJ

4th May 2016, 14:09	#10
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	Front off time then! __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's