Temperature Gauge false reading.

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Trickydicky
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Re: Temperature Gauge false reading.

Postby Trickydicky » Thu Jul 22, 2021 6:10 pm

Here is a link to the instructions for making the stabiliser yourself for any one who is interested.
http://www.britishv8.org/articles/MGB-v ... ilizer.htm
Richard

Opinions are like people,everyone can be different.

Sleeper
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Re: Temperature Gauge false reading.

Postby Sleeper » Thu Jul 22, 2021 7:46 pm

... and if you'd like to make it a little better , you could add a coupe of capacitors in the input and output stages so..
vreg10.jpg
vreg10.jpg (20.5 KiB) Viewed 99 times
with no need for the LED and resistor...




John ;-)

oliver90owner
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Re: Temperature Gauge false reading.

Postby oliver90owner » Thu Jul 22, 2021 9:29 pm

Wouldn’t you need a 7910 if it is positive earth?

Sleeper
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Re: Temperature Gauge false reading.

Postby Sleeper » Fri Jul 23, 2021 7:48 am

You are quite right there , is this car a positive earth? 1963...should be?

FosterS , is it?

Does it have a dynamo or an alternator ?

Thanks
John

FosterS
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Re: Temperature Gauge false reading.

Postby FosterS » Fri Jul 23, 2021 9:38 am

Sleeper wrote:
Fri Jul 23, 2021 7:48 am
You are quite right there , is this car a positive earth? 1963...should be?

FosterS , is it?

Does it have a dynamo or an alternator ?

Thanks
John
Negative earth as its running an altenator.
1963 4 Door 1098cc

Learn from your parents mistakes use Condoms. :oops:

FosterS
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Re: Temperature Gauge false reading.

Postby FosterS » Fri Jul 23, 2021 9:48 am

After I've checked every thing thats been said I have contacted the supplier of the gauge and sender and they are sending me a new sender, I've also ordered a stabiliser off ebay (it's due in a few days) I'll let you know what happens.
Sleeper wrote:
Thu Jul 22, 2021 7:46 pm
... and if you'd like to make it a little better , you could add a coupe of capacitors in the input and output stages so..
vreg10.jpg
with no need for the LED and resistor...

John ;-)
Thats just to much for my brain to sort out, I'm just a humble mechanic.
1963 4 Door 1098cc

Learn from your parents mistakes use Condoms. :oops:

Pete Bags
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Re: Temperature Gauge false reading.

Postby Pete Bags » Fri Jul 23, 2021 12:32 pm

Hi,

This all looks very familiar to me! I fitted the same Smiths water temp gauge to my 1963 car (negative earth) , and also ordered a 10v stabiliser. To start with, all worked well, the temperature gauge reading just under 90 degrees for almost all types of driving - needle at the green arrow on the photo. Then a few months later I was driving and the temp gauge was moving up to the yellow arrow. I was very concerned that I had an over heating issue. I put the manual over-ride switch on for my electric radiator fan, but every now and again the temp would go back to 'normal' but then it would go back up again. The needle on the gauge did not flick between normal and high, it would move slowly between the two. I was quite worried - but I was not losing any coolant and there was no change in engine noise or performance.
IMG_0219.jpg
IMG_0219.jpg (95.41 KiB) Viewed 58 times
I then read this thread on the forum - the mentioning of a bad earth made me think - so I had a look at my voltage stabiliser and noticed the screw holding it on/earthing it was a bit loose - so I tightened it. Ever since, the temp gauge has been indicating the normal temp!
IMG_0219.jpg
IMG_0219.jpg (95.41 KiB) Viewed 58 times
I hope this helps!
Attachments
IMG_0220.jpg
IMG_0220.jpg (102.04 KiB) Viewed 58 times

Sleeper
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Re: Temperature Gauge false reading.

Postby Sleeper » Fri Jul 23, 2021 1:46 pm

Good Man...

but you should have that hidden behind your speedo or at least behind the dash... :)

John ;-)

Pete Bags
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Re: Temperature Gauge false reading.

Postby Pete Bags » Sat Jul 24, 2021 9:54 am

Sleeper wrote:
Fri Jul 23, 2021 1:46 pm
Good Man...

but you should have that hidden behind your speedo or at least behind the dash... :)

John ;-)
Guilty as charged! :oops:


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