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Author Topic: 2.5TD - Running Temp. - Thermostat?  (Read 1488 times)

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JesterRT

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2.5TD - Running Temp. - Thermostat?
« on: 02 December 2006, 12:37:40 »

Hi all,

I've been looking at the temperature gauge in the car for the past few weeks and thinking that it's just not hot enough.  The car used to have A/C, but the compressor died and I've not replaced it (costs far too much - and it's winter, so don't see the need just yet).  I've replaced the radiator recently and connected everything back up as should be (to my knowledge) - the old Haynes, installation is the reversal of removal thing.
The dashboard tells me the temperature never gets to 90 for a lot of the time (sits often at around 85).  Occasionally it does though, at which point the heater works much better - but that takes quite a while.  I drive 80 miles a day, and the heater just doesn't seem to do the job it should.

I'm thinking that when the AA recovered me from a radiator breakdown they filled the engine with some crap to block up the holes to get me home, and this crap has buggered the thermostat...?  Not sure...  I've got the climate control (4 dials across the dash), and it's a '98 Saloon Elite.  It's certainly the last time I'll let the AA attempt to fix the car roadside - I pay for recovery so they can damn well get me home!

Anyone got any ideas?  I'm worried that if the engine isn't being cooled properly I'll get a much bigger bill (like replace the car).  The sensor that feeds to the dash - where's that positioned on the car?  No idea!

Cheers!  ;)
« Last Edit: 02 December 2006, 12:38:27 by JesterRT »
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TheBoy

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #1 on: 02 December 2006, 14:13:33 »

Soz, I know sod all about that engine  :'(

Hopefully, a fellow tractor owner will be along shortly...
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JesterRT

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #2 on: 04 December 2006, 07:46:21 »

Gotta be another 'tractor' out there?!  :)
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andyiow

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #3 on: 12 April 2007, 14:35:01 »

Sorry to bring this one bakc up put spending the day browsing the old posts.

My 96 2.5TD sits about the 85-90 deg mark unless it has been driven really hard for a few miles. Highest  I have ever seen in was the 92 and that was stuck in some serious traffic.
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Taxi_Driver

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #4 on: 12 April 2007, 18:12:20 »

Quote
Soz, I know sod all about that engine  :'(

Hopefully, a fellow tractor owner will be along shortly...

I think TB knows all about the cooling system now on the TD's  :D
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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #5 on: 12 April 2007, 19:05:43 »

Quote
Quote
Soz, I know sod all about that engine  :'(

Hopefully, a fellow tractor owner will be along shortly...

I think TB knows all about the cooling system now on the TD's  :D

Problem is the 'A' team is at Drax Power Station today, should be back on line tomorrow.
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JesterRT

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #6 on: 13 April 2007, 12:48:29 »

Drove down to Longleat Safari Park place on the Bank Holiday and the temp barely lifted on the way down.  Once we started to queue up around Bath the needle crept up and sat around 90, no further.  Soon as we were moving again, it drops back down to being barely off the stop again.
Once inside the Safari Park we began to creep round, moving only a few feet every few minutes as we stared out at the animals.  The temp. gauge crept up to not far off 100, but no further.  No steam, no lights, no drama at all.  End of the day we drove off and it dropped back down to being barely off the needle stop again.
Nothing 'seems' to be wrong, but most the cars I've had in the past put the temp. gauge would have the needle rise to around the middle of the range of the gauge and stay there with little deviation.  I had an MR2 that no matter how hard you drove it would barely budge once it had warmed up to that middle spot.

Off topic...

...I was in stitches driving around in the Monkey enclosure at the Safari Park.  I suggest anyone with a Renault Megane thinks twice about going - the little sods appear to have the Haynes Manual.  They quite casually stripped the roof strips off  a Megane in front of me, and the Nissan Micra behind me was worse for wear when it finally rolled out the gates.
Not sure what was funnier - the way the monkeys were stripping cars as they went through or the expression on the faces of the drivers who watched their car be reduced to parts.  ;D
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Jimbob

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #7 on: 13 April 2007, 12:53:31 »

LOL we always take the car friendly route around knowsley now.
Took a company astra in, but not my own

Far more fun to watch the damage than be part of it.

JesterRT

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #8 on: 13 April 2007, 13:02:44 »

All I got was a tremendous set of muddy footprints in an arc from the front corner over the bonnet, roof and boot lid.  It looked brilliant - like it was a 'special edition' graphic or something.   :)
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osealy

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #9 on: 13 April 2007, 13:49:50 »

I'm on my third. 1st was as you described from 40k to 185 k.
Current car runs 90-95 and up to100 pulling skiboat up an incline.
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Kevin Wood

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #10 on: 13 April 2007, 14:18:04 »

Sounds like the thermostat to me. Does the top radiator hose gradually heat up with the engine or does it only get hot once the engine's up to temperature?

TheBoy's got one that gets too hot. Maybe you could swap bits of car until you both reach a happy medium  ;)

Kevin
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TheBoy

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #11 on: 13 April 2007, 15:13:01 »

LOL, if only I could keep my tractor cool  >:(

From what I can gather, 90 - 92 is normal, though it will push upwards on 95 if on boost.  96 ish, the low speed fans should come on, and drag it back down. 98 ish, the fans go into jet turbine mode....

Are your fans coming on? The slow speed switch is the one just under top hose...  ...may be worth shorting with paperclip, and checking fans come on.
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wombatcurry

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Re: 2.5TD - Running Temp. - Thermostat?
« Reply #12 on: 15 April 2007, 13:25:17 »

Interesting.... I've just bought a 2000 TD to replace (eventually) my high mileage '97 TD.
Taking it home, I noticed that even in 26°C ambient temperature, the needle didn't go above 80° unless I thrashed it a bit when it just managed 85°.
The old car has always remained between 90 and 95.
Were there any changes to the cooling system, or do I have a buggered thermostat?
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