Thread: V8 coolant temp sender part number

Hmmmmm just tested mine when at operating temp.

Open circuit. I'm guessing that is a bad thing.

Not the easiest thing to get the plug off and the probes on when everything around it is bloody hot!

Hello...............ello.................ello..... ...............ello

For future reference the part number is ETC8496.

The numbers above I think are for the temp gauge.

$28 +GST

Also seems to fit most if not all EFI V8 Rover engines.

Back to me again.

I just found out that the switch I tested for resistance is the fan on/off switch. No wonder it read as being open circuit

I did however just test my actual coolant temp sensor for the ECU. It read 213ohms minutes after I shut the engine down after driving home from work.
I read in an old thread that PhilipA suggested that it should read 300-400ohms when at operating temp. So for an unloaded trip home in the cold through suburban streets it is reading the temp as too high I would think. Not too much in it though but maybe enough.

Does anyone know what the difference is between the two ETC8496?
Aparently there is one LA and before and one MA and after. Same part number but an A and a B perhaps.

Just found this on an excellent link that has been posted up on this site before.

The Coolant Temperature Sensor should change resistance with heat, per the following specs.
-10C (14°F) 9100-9300 Ohms
0C (32°F) 5700-5900 Ohms
20C (68°F) 2400-2600 Ohms
40C (104°F) 1100-1300 Ohms
60C (140°F) 500-700 Ohms
80C (176°F) 300-400 Ohms
100C (212°F) 150-200 Ohms
http://www.britishv8.org/Articles/Rover-14CUX-EFI.htm

Originally Posted by Utemad

Back to me again.

I just found out that the switch I tested for resistance is the fan on/off switch. No wonder it read as being open circuit

I did however just test my actual coolant temp sensor for the ECU. It read 213ohms minutes after I shut the engine down after driving home from work.
I read in an old thread that PhilipA suggested that it should read 300-400ohms when at operating temp. So for an unloaded trip home in the cold through suburban streets it is reading the temp as too high I would think. Not too much in it though but maybe enough.

Does anyone know what the difference is between the two ETC8496?
Aparently there is one LA and before and one MA and after. Same part number but an A and a B perhaps.

Just found this on an excellent link that has been posted up on this site before.

The coolant temp will rise when you shut the engine off, it is no longer being cooled, it will eventually drop, I have seen a rise of 50 F+ after shutting down, Regards Frank.

Welcome to my thread

That is a good point. However unless the sensor is reading funny then it is not the cause of my rich running if it is reading high anyway.

I'm still going to replace it. Then I'll stick the sensor in a bowl of hot water with a thermometer just for kicks.

er, I just saw your thread..

would this have helped? http://www.aulro.com/afvb/showthread.php't=36224

Landrover Part
ETC8496, Sensor-Coolant Temperature

Replacement

Lucas SNB802
Intermotor 55128
Facet 73200
Lucas 73355A
Lucas 8TT
Lucas SNB802
Webcon WTS163
Jaguar EAC3927
Delco 213-2787
Champion CCS35

I bought the last one from my local Repco.

Just catching up with this thread after your PM.

ETC8496 is listed as the correct part number for all Disco1 V8s.

Another common cause of rich running is the air flow meter. See if adjusting it makes a difference to the CO readings. If it won't adjust, you have a problem.
It could be as simple as the plastic adjusting screw being loose/adrift or it might the the AFM internals themselves.