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Old 4th May 2016, 06:38   #1
ceedy
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Default 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 ..



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Last edited by ceedy; 4th May 2016 at 06:54..
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Old 4th May 2016, 06:48   #2
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I'd be checking for external leaks, rad cap and air locks before you panic! Hope all is well.
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Old 4th May 2016, 06:57   #3
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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.
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Old 4th May 2016, 10:03   #4
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88-90 here too.
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Old 4th May 2016, 10:13   #5
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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.

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Old 4th May 2016, 12:25   #6
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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 !! ..
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Old 12th May 2016, 11:40   #7
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Quote:
Originally Posted by Steve1966 View Post
Not for definite. My 1.8 was losing up to 0.5l per week for 4 years (45,000 miles) and this was trickling down the block exactly as described. I changed the inlet manifold gasket and it stopped using water. It was leaking at the inlet manifold and running around the head joint and trickling down the front.

Steve.
The coolant wouldn't have been running down behind the exhaust manifold if your inlet manifold was leaking

Edit:

Unless I read all of the post

Sorry.

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Old 12th May 2016, 11:47   #8
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Quote:
Originally Posted by rich17865 View Post
The coolant wouldn't have been running down behind the exhaust manifold if your inlet manifold was leaking
If you had read my comment properly you would see that I said it ran around the head and trickled down the front of the block (and therefore appearing to come from behind the exhaust manifold).
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Old 12th May 2016, 11:50   #9
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Quote:
Originally Posted by Steve1966 View Post
If you had read my comment properly you would see that I said it ran around the head and trickled down the front of the block (and therefore appearing to come from behind the exhaust manifold).
Yes, sorry, edited above post.
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Old 12th May 2016, 13:15   #10
ceedy
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But still getting a tiny oily residue in the water, but no hydrocarbons ..

so pretty sure it still got a touch of HGF ..

C,
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