Vehicle & Technical > Discovery
Overheating at 70 mph
jnoshea:
Hi guys,
My 300Tdi has recently started to overheat at sustained speeds of 70 mph...and only then :? . I can drive around town all day, stuck in traffic, climb rocky mountains at low revs and whatever and the temp gauge stays fixed at just below the middle. But get it up to 70 mph on the motorway and it strats to get much hotter. I can keep the engine temp at normal by keeping the cab heaters on full but this is not very comfortable. Any ideas what could be wrong?
The Disco is a standard 1995 ES with Aircon and viscous fan.
evang:
Check the lower radiator vains both sides. Last year I had a 90TD that done the same thing and it turned out to be the lower half of the radiator, the cooling vains between the water ways had rotted and knacked, due possibly road salt etc . The rad did not leak. The rad looked o.k till it was given a good looking at and was not blocked.
Therefore the 90TD rad did not have enough cooling capacity on long journeys at 70mph!!!!.
The local Landrover shop man pointed me in this direction and said this is becoming more common on LR's
Changed the rad every thing was o.k
Cheers
hobbit:
Same here, the fins for cooling just dissolved on mine, but no leaks.
Once I fitted a new one, one third on the gauge always. Checked it with a mechanical temperature gauge as well just in case the sender/disco gauge was faulty
I think Paddocks are still doing replacement ones for around 105+vat, but Mansfield Radiators may be worth a call, they had one is stock for me and it was cheaper than Paddocks
They even modified one of the fittings to take a mechanical temp gauge fitting
Skywalker:
I had a similar problem recently with my Defender TD5, as said above turned out to be the lower half of the radiator (particularly the back of) ................
Powerwashing the bottom of the radiator, front and back did solve the problem (short term) :oops:
After a bit of mud pluggin you think a powerwash will sort it ... :shock: .... believe me.......... it don't come close ............. Im gonna have to spend quite a bit of time on the radiator I believe :roll:
Dave
hobbit:
One thing which is handy to carry is one of the pump up water sprays cans, used for weeding, low pressure washing and can be done before leaving site. Followed by a garden hose wash through after you get back
ALso back washing it helps too
Bit awkward with the cowling on though
Navigation
[0] Message Index
[#] Next page
Go to full version