Temperature gauge..question..!

[Harylufa]

Hi all!

Last Sunday I could find both original (unit temperature sending). When I turn on the needle mark is almost in H (high temp) I attached a pic when it is turned on.

My question if originally it is in this way, or a bad wire connection???

I appreciate your helps.

Hary

[Ross F-1]

It could be a bad connection, could also be a bad "excess temperature switch". If the wire to the sender with one terminal is bad or loose, it will do that.

[Old Henry]

Most likely is a a bad sender that is installed in the top of the passenger side of the engine. That's what has always gone wrong on my car when the gauge doesn't read right.



You can get new ones in the U.S. here: http://macsautoparts.com/early-v8-fo...0R3CHL1076402/

Or here: http://cgfordparts.com/ufolder/showp...g=130&t=879&tn=

It's the single prong sender.

[Harylufa]

Hi!

Both sender with one terminal and two terminal were tested and measured and no problem are new.
I found this pic. I must check connections because from gauge temp to unit sender (two terminal) are two wire and not one as shown in pic, something is wrong there.

What do you think?

Thank again for helping me

Hary

[Harylufa]

Originally Posted by Old Henry

Most likely is a a bad sender that is installed in the top of the passenger side of the engine. That's what has always gone wrong on my car when the gauge doesn't read right.



You can get new ones in the U.S. here: http://macsautoparts.com/early-v8-fo...0R3CHL1076402/

Or here: http://cgfordparts.com/ufolder/showp...g=130&t=879&tn=

It's the single prong sender.

Old Henry!

this is the unit sender installed in my engine BC6-10884 its says year 1956.

Did I put the incorrect unit sender? the pic you attached (one terminal) is the same I have now.

Thanks

[Mike in AZ]

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should be only one wire as shown in your schematic...here's a link to MacVP's website showing your wiring diagram....one wire from gauge to 2-prong sender on left head...wire from 2nd prong to single prong sender on right head....good luck....Mike

http://www.vanpeltsales.com/FH_web/F...1946-48car.jpg

[Ross F-1]

Originally Posted by Harylufa

Old Henry!

this is the unit sender installed in my engine BC6-10884 its says year 1956.

Thanks

That is not a "two terminal sender" that's a single terminal sender with two connections. I can't imagine what its for.

[41ford1]

The sender harylufa has is evidently for 12 volt use ('56). It is a one terminal sender. I've tried 2 of these on my pickup. Both did not work. They went to hot like you describe. The 6 volt replacements from the flathead vendors work correctly. I have these in my pickup and Courier.

[Old Henry]

Originally Posted by Harylufa

Old Henry!

this is the unit sender installed in my engine BC6-10884 its says year 1956.

Did I put the incorrect unit sender? the pic you attached (one terminal) is the same I have now.

Thanks

Yes. That's the wrong sender. That is a 12 volt sender for 1956 part number B6C-10884. It won't work. The part for yours is as shown and linked in my #3. Part number 8A-10884.

[deuce_roadster]

The unit with 2 poles is a simple switch, not a sender of any kind. You can take it out of the circuit without effecting the gauge when hooked to the sender which has only 1 pole. Under certain conditions, the 2 pole switch sends the gauge to Hot by going to ground.

[Old Henry]

Originally Posted by deuce_roadster

Under certain conditions, the 2 pole switch sends the gauge to Hot by going to ground.

One slight correction. The two terminal switch (for 6 volt, not for 12 as Harylufa showed) sends the gauge to maximum by breaking the circuit totally rather than sending it to ground. Grounding the circuit sends it clear to the left of C (cold). As the single terminal sender heats up it grounds less current to move the the gauge toward H (hot).

Here's "the rest of the story":

[deuce_roadster]

Thanks Old Henry, I thought ground sent it to H.

[Harylufa]

Dear Friends!

Today I talked with the man who sold me this unit (12 volt sender for 1956 part number B6C-10884) the incorrect one. The seller will change this unit sender.
I really did not noticed the difference as I trusted the seller, but evidently he knows less than me.

One important question...my engine is at 12V, what could happen with the original unit sender at 6V? must I install any gauge voltage reducer?? I saw this in Mac´s parts.

Old Henry! I really thank your time in posting such important info, thank again..!

I will back with news..!

Hary

[Old Henry]

Originally Posted by Harylufa

Dear Friends!

Today I talked with the man who sold me this unit (12 volt sender for 1956 part number B6C-10884) the incorrect one. The seller will change this unit sender.
I really did not noticed the difference as I trusted the seller, but evidently he knows less than me.

One important question...my engine is at 12V, what could happen with the original unit sender at 6V? must I install any gauge voltage reducer?? I saw this in Mac´s parts.

Old Henry! I really thank your time in posting such important info, thank again..!

I will back with news..!

Hary

If you are actually running 12 volt in your car you will have to reduce the voltage for all stock gauges (gas, oil, and temperature). The cheap resistors are one way but the small voltage regulators are a little better because they maintain constant voltage.

Here are two resistors:
For one gauge: http://macsautoparts.com/early-v8-fo...0R3CHL1142716/



For all three gauges: http://macsautoparts.com/early-v8-fo...0RW35U1000017/



Here's the voltage regulator: http://www.ronfrancis.com/prodinfo.asp?number=VR%2D1

[Old Henry]

To know more precisely what my engine temperature was I added a mechanical gauge in the glove box that I could check when I wanted to. It monitors the left side of the engine while I have the stock electrical gauge monitoring the right side. See installation details here: http://www.fordbarn.com/forum/showthread.php?t=88541

[Harylufa]

Dear Friends!
Finally, I found the unit sender (2 prong), it has an "F" and 205 written on one side of it. The other unit has one prong and it has a 6 and KS written I must install a voltage gauge because my engine is 12V.
I attach a pic. What do you think?

Old Henry thank for share important info! I read all the article you posted.

I ll be back with news and tell you how it work.

Thank you all

Hary

[Old Henry]

Originally Posted by Harylufa

Dear Friends!
Finally, I found the unit sender (2 prong), it has an "F" and 205 written on one side of it. The other unit has one prong and it has a 6 and KS written I must install a voltage gauge because my engine is 12V.
I attach a pic. What do you think?

Old Henry thank for share important info! I read all the article you posted.

I ll be back with news and tell you how it work.

Thank you all

Hary

You've got the right senders now.
Once you get them hooked up through a voltage reducer they should work fine.

[Harylufa]

Dear Friends!
Today I installed a voltage regulator as my engine is 12V and the temperature gauge go till "H", I do understand nothing now.

Do you all have any suggestion?

Thank for helping me

Hary

[Old Henry]

The temperature gauge is automatically on "H" when there is no current to it. So, somewhere there is a break in the circuit. Use a test light or meter to check for current first at the terminal on the right side sender, both terminals of the left side sender, both terminals of the gauge, and on back to the battery. If you have current at all of those places the gauge should go to "C". If not, the sender is bad. If current is not at any test point you'll have to find the break in the circuit and fix it. The path of current is from the battery to the starter solenoid, to the horn relay, through the ammeter, to the circuit breaker, through the ignition switch, to the fuel gauge, through the temp gauge, through the left side sender, through the right side sender, to ground. See diagram: