Hello,
Lots of drama today after the engine is warmed up sitting at the lights for a couple of minutes the engine heats up about 4-5 degress up to 98 degress then driving it drops back to 89-92 degress.
at the mall open the hood and the fan had no resitance at all I know when hot it does this but maybe not thar freely, so the question is it the water pump or viscous fan or air pocket, the car had been sitting about a month and the I filled the coolant up by a liter before driving
Any advice would be great.
The car is a TD5 2004 Classic done 189000ks
Ian
Master
What are you using to get that accurate a reading?
I'd suggest the range is within the normal movement, as the thermostat will only START to open at about 88C.
The viscous fan will only firm up depending on the inlet air flow and is dependant more on the air flow temp than the actual coolant temp.
If you are not losing coolant, I doubt there's anything to worry about...watch the cluster gauge instead of whatever it is you are using.
The MOD Father
Hmm, The D2 has A VERY high Thermostat,, 96,,, all to do with emissions,, leaves VERY little for hard work however,,
"How long since you've visited The Good Oil?"
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'01 V8 D2
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'16.5 RRS SDV8
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Well I am using a nanocom evo in both modes the temp gauge doesn't move stays in the middle, Have none of the EGR in place it got up to a 100 within less than 5 mins sitting at the lights. there are no drips under the car, since filling there has been no change how high can the temp go before I should start to be concered ??
The Evo has been doing still things lately as arlam going off at around 30-40 having to reset then not going off at 94 where it is set. Am I worring over nothing still on the same water pump. Took the fan off sort seems to be working . quite concered as do not want to cook the engine.
Many Thanks for the replies
Ian
Master
Do you mean the V8, I thought the TD5 was a lot lower.Originally Posted by Pedro_The_Swift
Hmm, The D2 has A VERY high Thermostat,, 96,,, all to do with emissions,, leaves VERY little for hard work however,,
I have a Nanocom Evo and the TD5 runs at about 90 normally on the highway, would take a long time to get to 100 I think. In traffic on a hot day it gets to maybe 97-98 after 15 -20 mins, then I can hear the roar of the fan when moving off.
I have all new cooling hoses, pump, thermostat and radiator to install over Christmas as mine gets up towards 107 on a steep hard climb and I think the cooling system is gettign alittle tired.
If you have had to add coolant something is most likely wrong and needs investigation ASAP. Mine has never lost coolant in 8 years, apart from when it has been changed.
Regards Gordo
No it is a TD5 I did used to hear the fan but not now, when hot I stopped and flicked the fan with my finger no resistance at all it just spun. now cold quite stiff. I would expect it to get hotter just sitting after a while but not within a change of the lights.
Many thanks for your help.
Anyone got a spare fan in Perth?? maybe go to a 16inch electric fan anyone done this ?
Ian
Master
I had similar on my V8.
Replaced thermostat, viscous fan which had died & water pump which was leaking.
Still temps would climb when in traffic.
Had the radiator rodded, found to be 40% blocked & no more temp worries
Sits around 90-92 all day.
Dont go thermo - they can not move the volume the viscous can...
If you have no resistance when hot - replace the hub....
And yes, idling in traffic in 1 sequence can heat you up quite a few degrees...
Master
Sounds like its working normally to me. I agree watch yours cluster guage, if it actually gets hot you will see. The fan wont enga ge fully until things are proper hot, try it up a long steep hill first.
YarnMaster
The TD5 fans are quite light on reaction.
It will be stiff when cold as the oil and thermal spring in the hub are not at their operating temperatures.
The viscous oil needs to reach a certain temp for it to make its control viscosity and the thermal spring then controls the amount of lock based o what the air temp exiting the radiator is. Even with the thermal spring in its cold full open position, the oil will provide enough resistance to almost lock it.
On a 45deg day, idling in a diesel shouldn't see it reach those temperatures, if it does then you have other issues such as a blocked radiator or dud thermostat.
Tombie, hate to burst your bubble but big ixnay on analogy unless it's a situation where it's badly designed or installed. This tends to be the single biggest failure of home made thermo setups and another situation where someone's lack of knowledge then leads them to slag off something "coz it didn't work for me, I wouldn't waste my time" kind of scenario.
If a viscous fan is so good, why do they use an additional thermofan for aircon? Why, because they under perform at low revs due to a complete lack of speed and consume excessive amounts of engine power when locked.
It's well known I have twin thermos on my RRC and even one of these will outperform the viscous it used to house, but the TD5 still has its viscous ONLY because I have no overheating issues, no high load issues and it's only ever locked up for a handful of seconds pulling away from lights with the A/C on, otherwise it runs on highway and around town at 82-87C.
Andrew
Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...
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