engine overheat ????

[not so old]

I have just returned from a trip and I am a wee bit concerned about the engine temp. We were towing a small caravan and faced several long steep hills. I have the temp on my alarm set at 120 (the highest it will set too) and it went off on four occasions. Rising to a 124 temp after sounding the alarm. I have 2 daft questions(Well, they will sound daft,to you clever Technie folk )
I would really appreciate your thoughts/advice , as I am somewhat worried about this temperature issue Oh! Yes I forgot to mention, I have a TM2 alarm
1. How if I can, disconnect the audible alarm............. The noise is too loud and distracting. I normally keep an eye on the temp anyway, or is there a way to set the temp higher, so it doesn't go off until over 124?
2. Is 124 Temp, excessive ? I must admit it was only for a very short time and did drop quickly when the acceleration was decreased


Cheers Anna

[mikeonb4c]

This is one for Haydn - no doubt he'll be along shortly. My hunch is its not serious, just spurious, but he's the guru on this

[rita]

I have just returned from a trip and I am a wee bit concerned about the engine temp. We were towing a small caravan and faced several long steep hills. I have the temp on my alarm set at 120 (the highest it will set too) and it went off on four occasions. Rising to a 124 temp after sounding the alarm. I have 2 daft questions(Well, they will sound daft,to you clever Technie folk )
I would really appreciate your thoughts/advice , as I am somewhat worried about this temperature issue Oh! Yes I forgot to mention, I have a TM2 alarm
1. How if I can, disconnect the audible alarm............. The noise is too loud and distracting. I normally keep an eye on the temp anyway, or is there a way to set the temp higher, so it doesn't go off until over 124?
2. Is 124 Temp, excessive ? I must admit it was only for a very short time and did drop quickly when the acceleration was decreased


Hi,you can set the alarm to 127,at what position/point is your probe attached to the engine.

Its not realy advisable to keep raising the alarm thresh hold as this might just be disguising a problem.



Cheers Anna

[not so old]

Hi Rita,
I have tried to set the alarm higher but it jumps back to the start number I will check with the mechanic where it is connected. It was put as the directions that came with it though. Where is yours located ? I do recall reading something about moving the location, so that may well be the problem. Thank you. I will check it out We towed around scotland earlier this year and it only went off once, but it is worrying and the noise starts the dog barking too . Not the safest environment for driving up twisting hills!

Cheers Anna

[haydn callow]

Hi, You should be able to set it up to 127....If it won't go above 120 then I will be happy to change it.
It should only jump back to Zero after reaching 127 ( I really don't see how it could do as you say yours is)
However....It sounds as though you have the sensor on the exaust side of the engine...I strongly suggest you move it to the "new" position on the rear of the cylinder head...This is a simple job that anyone could do in 30 mins with 2 spanners.
If you do this you will not see readings above "approx" 105 so the 120 limit will no longer be a concern.
When I had mine on the exaust side I often got up to 120 plus when towing...
You can quieten down the alarm by partially blocking up the small hole on the back/side of the display box....Personally I would not do this and I would move the sensor.

From this...



Move it to...

[not so old]

Hi, You should be able to set it up to 127....If it won't go above 120 then I will be happy to change it.
It should only jump back to Zero after reaching 127 ( I really don't see how it could do as you say yours is)
However....It sounds as though you have the sensor on the exaust side of the engine...I strongly suggest you move it to the "new" position on the rear of the cylinder head...This is a simple job that anyone could do in 30 mins with 2 spanners.
If you do this you will not see readings above "approx" 105 so the 120 limit will no longer be a concern.
When I had mine on the exaust side I often got up to 120 plus when towing...
You can quieten down the alarm by partially blocking up the small hole on the back/side of the display box....Personally I would not do this and I would move the sensor.

From this...



Move it to...

Thank you Haydn, I will get the sensor moved ..... You are right It is in the wrong place It is reassuring to hear that you have had a high reading when towing. I can stop worrying now


Cheers Anna

[dandywarhol]

Who the hell advised puting the sensor above the EXHAUST manifold????????????

[mikeonb4c]

Who the hell advised puting the sensor above the EXHAUST manifold????????????

Don't go there Dandy!

[haydn callow]

We started off by suggesting the sensor should be under one of the rocker bolts on the inlet side.....this proved to to be a bit on the cool side and affected by airflow/fans etc........there are a couple of nice threaded holes on the exaust side and we then tried those as they seemed to be a reasonable distance away from the manifold......The thinking being that it didn't really matter where you put the sensor within reason as what we were after was a "not normal reading" whether that be 90C or 120C wasn't really important....Then when towing we started getting readings close to the TM-2's upper limit so a forum member found these 2 threaded holes on the back of the cylinder head.......this has turned out to be ideal and the readings are within 2 degrees of the actual coolant.
Live and learn !!!