Land Rover 90 Temp Gauge Problem

Shaun Morris · Nov 15, 2016

Hi,
I am new to Land Rover, but I have bought a 1987 Land Rover 90 with a 200Tdi conversion that seems to work very well. Just 1 issue, the temp gauge needle hardly moves from cold when the engine is hot.
I have taken the connection from the sender unit straight to earth and and found that the needle only moves to half way between cold and red hot, I would expect it to go all the way into the red. Could this be a faulty gauge ?
Everything else seems to work fine including the fuel gauge which shares a common positive feed.
Any thoughts

tottot · Nov 15, 2016

Wrong section mate,search 90 110 section lots of temp gauge info.

blue beasty · Nov 15, 2016

Moved

tottot · Nov 15, 2016

That was quick,you must be a fast worker blue beasty.

jamesmartin · Nov 15, 2016

Shaun Morris said:
Hi,
I am new to Land Rover, but I have bought a 1987 Land Rover 90 with a 200Tdi conversion that seems to work very well. Just 1 issue, the temp gauge needle hardly moves from cold when the engine is hot.
I have taken the connection from the sender unit straight to earth and and found that the needle only moves to half way between cold and red hot, I would expect it to go all the way into the red. Could this be a faulty gauge ?
Everything else seems to work fine including the fuel gauge which shares a common positive feed.
Any thoughts

if gauge doesnt move to high when wire is earthed ,gauge is poorly,unless it doesnt have 12v feed to it

The Mad Hat Man · Nov 15, 2016

jamesmartin said:
if gauge doesnt move to high when wire is earthed ,gauge is poorly,unless it doesnt have 12v feed to it

Gauges normally run on less than 12v. I think regulators are set to 10 to allow for high usage and volt drop.

jamesmartin · Nov 15, 2016

feed is from the fuse box which is 12v,series have a voltage regulator defenders dont

The Mad Hat Man · Nov 15, 2016

jamesmartin said:
feed is from the fuse box which is 12v,series have a voltage regulator defenders dont

Some do, James

reiny · Nov 16, 2016

Rip your gauge out, and buy another one with a matching sending unit. Even a cheapo one made by TIM will do the job. A Durite or VDO will naturally be a better choice.

cornish rattler · Nov 16, 2016

I'm in the middle of doing this myself just waiting for a local machine shop to make me an adaptor to screw into the thermostate housing and screw the matched sender into the adaptor, Durite gauge fitted but reads just like the std gauge atm till I get the adaptor made

Disco1BFG · Nov 16, 2016

Another vote for Durite stuff - very well made IME, and decent support too

Kwakerman · Nov 16, 2016

VDO Vision range for me

waldamar · Nov 16, 2016

Junk electrical gauge altogether and go for an old school mechanical gauge [Durite best, TIM ok] fiddle to fit but once done as near as damn it 100% reliable......................... £30.00 or so and peace of mind - good luck

flat · Nov 17, 2016

waldamar said:
Junk electrical gauge altogether and go for an old school mechanical gauge [Durite best, TIM ok] fiddle to fit but once done as near as damn it 100% reliable......................... £30.00 or so and peace of mind - good luck

+1 for durite, accurate and responsive enough you can see the thermostat opening.

Land Rover 90 Temp Gauge Problem

Shaun Morris

New Member

tottot

Well-Known Member

blue beasty

Leaks an prone to bits dropping off

tottot

Well-Known Member

jamesmartin

Well-Known Member

The Mad Hat Man

Well-Known Member

jamesmartin

Well-Known Member

The Mad Hat Man

Well-Known Member

reiny

Active Member

cornish rattler

Well-Known Member

Disco1BFG

Well-Known Member

Kwakerman

Well-Known Member

waldamar

Well-Known Member

flat

Well-Known Member

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