Too Cold?

[Traveler]

Hi All... i have a temperature query too...can the 4bd1 run too cold...the temp gauge needle never lifts any further than the top edge of the white in the cool section of the gauge...are they meant to run hotter than this...the radiator hoses never seem to be anymore than warm-hot after a trip of hour or 2...thankyou...

[Bigbjorn]

Yes the needle should sit close to the centre mark on the standard gauge, &just slightly to the left or just touching, is normal operating temperature. You need a new thermostat. Isuzu truck dealers are cheapest. Performance and fuel economy are adversely affected by running cool.

[Traveler]

Thanks Brian, will go and see madills isuzu in gympie tomorrow...

[JDNSW]

I agree entirely with Brian - I have had to replace the thermostat three times. Note the thermostat comes with a new rubber gasket.

However, there is the possibility that the problem is with the gauge. In particular, the gauge needs a good earth and if this is faulty, the reading will be incorrect. An easy test of the instrument earth is to switch on the instrument lights. This will change the reading if the gauge is faulty, remembering that it will take the gauge a minute or so to respond.

John

[D3Jon]

Note the thermostat comes with a new rubber gasket.

John

I bought a new thermostat from Isuzu the other week and it didn't come with the rubber gasket, that had to be bought separately.

http://www.jonmurray.com/gallery/albums/uploads/Landrover%20110/New-Thermostat.jpg

Jon

[Traveler]

hey jon what did the thermostat cost you???and could i make a gasket???cheapskate i am...

[D3Jon]

Hey Traveler,

I've put the costs in your "How Much" question, but about $70 with the GST. In my case this did not include the gasket which was a further $8.

The gasket on my car is like a rubber ring that clips around the outside edge of the thermostat itself. This then gets compressed when the thermostat housing is tightened down, there is also a machined groove in both the thermostat housing and the engine block .

You could possibly re-use your old one if you want to save a further $8, mine came out in one piece, but I figured I'd change it while it's off and pop the old one in the emergency parts box! ;)

Jon

[Blknight.aus]

there are not words to emphasise how strongly you should heed this warning...


Do not reuse the old rubber on a new thermostat.

[D3Jon]

there are not words to emphasise how strongly you should heed this warning...


Do not reuse the old rubber on a new thermostat.

So there you go, like I said (not) NEVER re-use you old rubbers :D:D:D:D:angel::angel:

[Traveler]

well i once was with this girl we were drunk it was late and......

[Bigbjorn]

I paid $53 at Brisbane Isuzu and this included the rubber seal.