Core Heater Sensor

Rachelkgr · Oct 11, 2013

So I removed the Core Temperature Heater Sensor

Two things?

1) This is what came off (photo), is there a bit missing? A silver bit to form the loop over the pipe?

2) I put the avo meter on the two prongs to check continuity, no reading, assuming I should get a reading of 1?

Thanks.

wammers · Oct 11, 2013

That is not the heater core sensor it is the heater temp sensor. Core sensor is a long thin probe that is pushed into a grommet and twisted to lock just to rear of distribution motor. That item should look like this.
http://www.rimmerbros.co.uk/Item--i-STC3256

Rachelkgr · Oct 11, 2013

wammers said:
That is not the heater core sensor it is the heater temp sensor. Core sensor is a long thin probe that is pushed into a grommet and twisted to lock just to rear of distribution motor. That item should look like this.
Temperature Sensor - Heater - Genuine Land Rover at www.rimmerbros.co.uk

Sorry Wammers, my bad terminology.....

It is this part that has failed. Anyway, from your picture there is a piece missing!!

I put the avo on the sensor and the meter read "0", so I am guessing it is buggered anyways...

Rachel

Saint.V8 · Oct 11, 2013

I haven't heard anyone outside our workshop use the term Avo in years.....glad to hear it is still in common parlance.

The last Avo made in 2008...sad!

Rachelkgr · Oct 11, 2013

Saint.V8 said:
I haven't heard anyone outside our workshop use the term Avo in years.....glad to hear it is still in common parlance.

The last Avo made in 2008...sad!

Old school me!!!! :banana:

Datatek · Oct 11, 2013

Saint.V8 said:
I haven't heard anyone outside our workshop use the term Avo in years.....glad to hear it is still in common parlance.

The last Avo made in 2008...sad!

Never knew what happened to my Dad's Avo 8, it disappeared when he died. I was brought up on the Avo

Datatek · Oct 11, 2013

Rachelkgr said:
So I removed the Core Temperature Heater Sensor

Two things?

1) This is what came off (photo), is there a bit missing? A silver bit to form the loop over the pipe?

2) I put the avo meter on the two prongs to check continuity, no reading, assuming I should get a reading of 1?

Thanks.

View attachment 51143

According to RAVE it measures the temperature so it will be a negative coefficient resistor (Thermistor) You may need the meter on a fairly high ohms range to get a reading, the reading should change as you heat or cool the sensor, the hotter it is, the lower the resistance

rewmer · Oct 11, 2013

When mine went I seam to remember the fault be registered as " open circuit" so if your not getting continuity then it's air to assume its buggered.

Rachelkgr · Oct 11, 2013

Datatek said:
According to RAVE it measures the temperature so it will be a negative coefficient resistor (Thermistor) You may need the meter on a fairly high ohms range to get a reading, the reading should change as you heat or cool the sensor, the hotter it is, the lower the resistance

Poured hot water on it and the needle climbed. As it cooled the needle dropped, although it dropped to 0 rather suddenly. Probably ok. However since the clip is missing, purchased a new one to be sure.

Datatek · Oct 11, 2013

Rachelkgr said:
Poured hot water on it and the needle climbed. As it cooled the needle dropped, although it dropped to 0 rather suddenly. Probably ok. However since the clip is missing, purchased a new one to be sure.

I'm surprised it dropped to zero

I don't have a specification for the device, what ohms reading do you get when it's hot?

Rachelkgr · Oct 12, 2013

Datatek said:
I'm surprised it dropped to zero I don't have a specification for the device, what ohms reading do you get when it's hot?

New one fitted this morning....code cleared. Will test the other one at some point......

Rach

Rachelkgr · Oct 12, 2013

Quick up....I seemed to have upset the echo system when I fitted the sensor!! The Pipes in to the matrix are seeping!!!! O-ring job to do at some point!!!! Hopefully, seeping then stop!!! Will keep a watch!!

Datatek · Oct 12, 2013

Rachelkgr said:
Quick up....I seemed to have upset the echo system when I fitted the sensor!! The Pipes in to the matrix are seeping!!!! O-ring job to do at some point!!!! Hopefully, seeping then stop!!! Will keep a watch!!

Hard luck, touch the pipes and the old O rings always seem to start leaking

Rachelkgr · Oct 12, 2013

Datatek said:
Hard luck, touch the pipes and the old O rings always seem to start leaking

Oh well, will keep me busy!

Core Heater Sensor

Rachelkgr

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wammers

No longer with us, RIP

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Saint.V8

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