Temp gauge testing confirmation

[pontiacgp]

Damn... talk about a light bulb getting lit. I never realized. Thanks!

-Gonz

you need to eat more popcorn, it's extreme brain food.....

 

[Gonzo1970]

you need to eat more popcorn, it's extreme brain food.....

right after I fix the collector gasket 😀 (Shop was closed for the holidays last week)

-Gonz

 

[Gonzo1970]

Collector Gasket Fixed. 😛 (Sounds really good too)

Now, back to the Temp Sender.

I have an issue.

I see mine and it looks like the top one.

All the parts joints are telling me I need the Bottom one.

The Top One says Sensor..
The Bottom one says Switch.. which leads me to believe that's for Dummy Lights.

I have the Gauges.

Do I just go ahead and get the one that Looks Right, or.....?

Thanks!

-Gonz

 

[pontiacgp]

a switch is on/off , a sender is variable. I would get the top one

 

[Ribbedroof]

TS76 is with gauge

Was the car delivered to the dealer with gauges, or has it been swapped?

 

[pontiacgp]

top one...don't worry about the cut off year of 78, they were supposed to change to the blade in 79 but that never happened

AC Delco - 12334869 - GM Coolant Temperature Sensor - Fits all 1956-1978 Chevy Cars and Trucks With factory Tempurature Gauge - 1/2" NPT Threads

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[Gonzo1970]

On its way, thanks!

Kind of unsettling to run without a temp gauge.

-Gonz

 

[pagrunt]

Here is the issue, both are for gauges in your car but the top is for '80 & older heads with 1/2" pipe thread as the lower is for '80 & newer heads with 3/8" pipe thread. From what I understand sometime during the '80 production year GM changed the size of the threaded port in the heads. As you have a later model go with the smaller one.

 

[denny]

did a test one summer afternoon on the myth of teflon tape not grounding well. had no effect on the gauge or grounding. still worked good either way.

 

[Kra5379]

What model is your car, which engine/cluster? These details can make a huge difference in determining the cause of your issue. And teflon tape does not affect the operation of the sensor/gauge.