Temperature gauge in the red

E

Ebbingeii

Member

Posts

44

Location

Falmouth, Cornwall

• Oct 9, 2012

• #1

Morning all,

Started my 1974 series this morn and noticed the temperature gauge moved right up into the red within seconds, before i'd even moved!!

As the engine had just started from cold, it can't be reading the temp properly.
It has always stayed in the "normal" range. And if the gauge/sensor was broken, surly the needle wouldn't move!

Any help would be really appreciated.

Thanks in advance.

Ross

 

chunkymunky

New Member

Posts

9,901

Location

worcestershire

• Oct 9, 2012

• #2

At a guess you may have an earth problem on the gauge or a short.

I had similar when I fitted my new gauge just put a new earth in and fine.

 

cornish rattler

Well-Known Member

Posts

6,432

Location

Manc chester

• Oct 9, 2012

• #3

my guess is the wire on the temp switch has come off / snapped and resting on the engine giving the gauge a high reading

 

dominicbeesley

Well-Known Member

Posts

1,701

Location

Hebden Bridge, West Yorkshire

• Oct 9, 2012

• #4

Yes, high reading mean shorted to ground usually. First check wiring.

Temp sender is near front of block (green wire I think) check that all looks well. with ignition on if you pull the terminal off it should read cold. If you short it to block should read hot. If passes both tests then suspect the sensor...