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AuthorTopic: My V8 Disco is overheating where do I start  (Read 735 times)

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Offline stevepage3

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My V8 Disco is overheating where do I start
« on: September 15, 2007, 09:46:44 »
Hi

My 3.5 v8 disco has started overheating, I have cleaned out the radiator and changed the viscous fan. So where do I look next.

I have recently moved the header tank, but am sure it is about the same height as it was, would this possibly be the cause.

Any suggestions more than welcome.

Thanks

Steve
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Offline Skibum346

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My V8 Disco is overheating where do I start
« Reply #1 on: September 15, 2007, 12:40:38 »
If the radiator is clean on the outside... then the possibilities are:

1. Clogged on inside - flush back and forth with a coolant cleaner
2. Engine coolant routes clogged - See above
3. Water pump Gnackered! - Fit new one!

Oh... wait... possibly an airlock!

Which V8 is it? carb or efi?

The efi's have a water tower affair on the drivers side bank for filling the system. IIRC this can also be used for bleeding system.

How does the overheating happen? (Right away, over particular speed, slowly, suddenly)

Skibum
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Offline gtomo2

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My V8 Disco is overheating where do I start
« Reply #2 on: September 16, 2007, 09:26:08 »
If it go's from cold and just keeps getting hot try the thermostat as it may be stuck shut.
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Mr Graeme Thomas (tomo)
300 TDi Discovery - So i can go fording
Stop laughing put the camera down AND PASS ME THE TOW ROPE !! PLEASE

Offline Skibum346

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My V8 Disco is overheating where do I start
« Reply #3 on: September 16, 2007, 11:11:33 »
Quote from: "gtomo2"
If it go's from cold and just keeps getting hot try the thermostat as it may be stuck shut.


 #-o

 :oops:

KISS!!!

Keep It Simple Stupid!

Must do better with my advice... thanks for showing me up Tomo! :lol:
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Offline gtomo2

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My V8 Disco is overheating where do I start
« Reply #4 on: September 16, 2007, 13:52:00 »
Quote from: "Skibum346"


Must do better with my advice... thanks for showing me up Tomo! :lol:


No problem thats my job  :wink:
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Mr Graeme Thomas (tomo)
300 TDi Discovery - So i can go fording
Stop laughing put the camera down AND PASS ME THE TOW ROPE !! PLEASE

Offline Range Rover Blues

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My V8 Disco is overheating where do I start
« Reply #5 on: September 22, 2007, 13:45:17 »
Been having trouble with the LSE, drive it hard and then sit in traffic (especaillly with the 'van on) and it overheats, once it did it sat in traffic for over an hour too.

Replaced lots of stuff but in the end I fitted a new vicscous fan and Rad, as I found one for sensible money and it's been fine.  The new 'van is nearly 2 tonnes but the guage has never moved above normal since I fitted it.  I've also added some water-wetter though.

Even if you think your rad is clean it may not be, that seems to have done the trick of mine.

BTW I rang Kenlowe for advice on electrics fans, their advice was DON'T :shock:

They don't make an electric fan that can move as much air as the viscous and for towing they don't recomend electrics.
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Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.
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