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Old 11-08-2018, 11:33 AM   #1
wrapumup
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Temperature sensor and connector

I am having a little trouble finding out stuff on these for a 1984 chevy truck. I really just need a new connector on the end of the wire. This is a wierd connection, not sure why they just didn't make it a standard faston connector. Any help or ideas are appreciated.


Last edited by wrapumup; 11-08-2018 at 11:53 AM.
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Old 11-08-2018, 07:56 PM   #2
akart
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Re: Temperature sensor and connector

Go to a salvage yard there will be 100's of them there.Splice it on or redo the connection in the fitting. GoodLuck
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Old 11-08-2018, 09:30 PM   #3
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Re: Temperature sensor and connector

Check out this site might find the connector you need.

https://www.repairconnector.com/
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Old 11-09-2018, 09:30 AM   #4
hatzie
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Re: Temperature sensor and connector

What does the sensor look like?


1984 should be a 1/4 disconnect with a single Packard 56 female connector like the sensor on the far right in the picture.

If you have the 01513321 nailhead sender, second from the left in the picture, it's the wrong one for your 1984 temp gauge. This sender takes a Female Packard 56 terminal but the plastic shell has a slot to slide over the narrow part of the nail head.

The Pico 5665PT repair pigtail with the slotted shell will fit both types of sender...
Name:  Nailhead_Temp_Sender_Connector.jpg
Views: 125
Size:  37.9 KB

The correct connector for your 1984 sender would be a 2977253 Female Packard 56 single...
Name:  Female Packard56.jpg
Views: 125
Size:  59.6 KB

Both connectors have this Packard 56 Female terminal inside...
Name:  Female Packard Term.jpg
Views: 124
Size:  13.3 KB
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1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


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And please let us know if and how your repairs were successful.
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Old 11-13-2018, 08:56 AM   #5
72velle
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Re: Temperature sensor and connector

good info. Are the parts #s listed GM part #s?
Would the wrong sensor cause your gauge not to work?
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Old 11-13-2018, 11:13 AM   #6
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Re: Temperature sensor and connector

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Originally Posted by 72velle View Post
good info. Are the parts #s listed GM part #s?
Would the wrong sensor cause your gauge not to work?
Yes. IIRC, there are 3 different resistance ranges in the square body run of years. Plus many of the aftermarket sensors don't match the GM values. You can't just go by the terminal types as I think some of the resistance range changes didn't match the terminal type changes.

And you can add in the ever popular installation of an idiot light sender in place of a gauge sender.
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Old 11-13-2018, 11:31 AM   #7
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Re: Temperature sensor and connector

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Originally Posted by 72velle View Post
Are the parts #s listed GM part #s?
All of them except the Pico number are GM part numbers.

Download the GM parts books and look up the temp sender for your rig.

The gauge will work.with the wrong sender. However. It will not work as intended. The needle position will be off.
No automobile or truck temp gauges were/are highly accurate but using the wrong sender makes em much worse. You can just "get used to it" or put in the correct sender.

And the Idiot light switches will not work at all for a gauge... it's unfortunately pretty common to find that too.

Language is important... it avoids confusion. For instance gauges take senders but idiot lights take switches and manual transmissions have flywheels but automatics have flex plates. The parts goons and retailers use the tower of Babel approach mixing up the wording and it's predictably confusing. One of my pet peeves.
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1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.

Last edited by hatzie; 11-13-2018 at 11:46 AM.
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Old 11-13-2018, 08:40 PM   #8
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Re: Temperature sensor and connector

The temp gauge on my 84 isn't working. I am thinking that the PO may have put the wrong sender in when the engine was swapped.
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Old 11-13-2018, 09:17 PM   #9
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Re: Temperature sensor and connector

When you ground the Temp sender wire with the ignition switched on it should nail the temp gauge all the way to HOT... If your temp sender wire is melted onto your exhaust manifold it'll do the same thing.
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1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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Old 11-13-2018, 10:03 PM   #10
natedogg
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Re: Temperature sensor and connector

I'm having the same issue with my 84. Bought a new temp sensor at the parts store, installed it and now it reads too high. How do you read the resistance on the temp sensor to make sure you have the correct one for your truck?
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Old 11-16-2018, 07:16 AM   #11
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Re: Temperature sensor and connector

Is this the right sensor?
https://www.autozone.com/electrical-...sor/114273_0_0
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Old 11-16-2018, 08:43 AM   #12
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Re: Temperature sensor and connector

Quote:
Originally Posted by natedogg View Post
I'm having the same issue with my 84. Bought a new temp sensor at the parts store, installed it and now it reads too high. How do you read the resistance on the temp sensor to make sure you have the correct one for your truck?
You will need a Ohm meter(the O in VOM). Disconnect the existing sender wire and connect one side of the meter to the sender tab and the other to the engine block. Cold, and depending on ambient temps, your reading should be either a few hundred ohms or between 2 and 3 thousand. As the engine warms, the reading should drop to under, IIRC, 100 ohms, again depending on how warm the engine gets. A 160* tstat may not get under 100 while a 195* should.

There are some resistance curve charts either posted or linked to in some other forum threads on this subject.
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Old 11-16-2018, 12:31 PM   #13
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Re: Temperature sensor and connector

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Originally Posted by 72velle View Post
For what vehicle??

Go to RockAuto.com and drill down to your manufacturer, year, model, and then engine.
Temp sensors will be listed under Cooling System, Temperature Sender/Sensor.

Standard Motor Products sometimes abbreviated to Standard and AC Delco are good suppliers.
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1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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Old 11-16-2018, 04:25 PM   #14
72velle
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Re: Temperature sensor and connector

Sorry, thought we were still talking 84 chevy truck.
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Old 11-16-2018, 04:32 PM   #15
hatzie
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Re: Temperature sensor and connector

That sensor will probably make the gauge read something. It has the correct terminal and maybe the correct threads. I've never been real keen on Holley parts on my GM. Holley belongs on my F250.

In 1984 there could be two different senders depending on the sensor hole in the head...
Rockauto isn't the only outfit to carry these but they make it easy to do a lookup.
3/8" Standard TS76 https://www.rockauto.com/en/moreinfo...030936&jsn=448
1/2" Standard TS71 https://www.rockauto.com/en/moreinfo...030936&jsn=454
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1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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