NAPA TS-6469 sender

[john massey]

sigh....

Working on various projects for GMC (A 1977 Royale), one of which is to
replace original water temp sender with a NAPA TS-6469 sender.
Sender in hand, on my back under the GMC, I find things are not going to
fit. The Radiator has, at the sender location, a tube about 3/4" in diameter
and about 1 1/4" long. The tube looks to be a permanent attachment, i.e.
not screwed into the radiator. The sender screwed into the top of the tube
is much smaller than the napa sender.

|
|__________ sender
| |---/
| Tube | |==
|__________|---
|
|
Radiator

OK, what gives. I don't think the radiator has been changed tho I have no
prior owner maintenance records.
The napa TS 6469 sender I have looks to have a 3/4" pipe thread and a
15/16 nut. It's 2 1/4" in total length.

BTW how does one work in this area - remove the batteries? I want to
replace the oil cooler hoses also. At least they don't seem to present a
problem other than access.

John Massey
1977 Royale
Tidewater Crabs

 

[blank]

John,

I hope your computer clock is wrong, since it claims you are doing this at
2:47 this morning. I think your looking at the radiator water level
sensor. You'll probably find the temp sensor on the front of the intake
manifold(at least that's where it is on a 455).

Patrick

> -----Original Message-----
> From: John Massey [mailto:john.massey]
> Sent: Wednesday, April 28, 1999 2:47 AM
> To: gmcmotorhome
> Subject: GMC: NAPA TS-6469 sender
>
>
> sigh....
>
> Working on various projects for GMC (A 1977 Royale), one
> of which is to
> replace original water temp sender with a NAPA TS-6469 sender.
> Sender in hand, on my back under the GMC, I find things
> are not going to
> fit. The Radiator has, at the sender location, a tube about
> 3/4" in diameter
> and about 1 1/4" long. The tube looks to be a permanent
> attachment, i.e.
> not screwed into the radiator. The sender screwed into the
> top of the tube
> is much smaller than the napa sender.
>
> |
> |__________ sender
> | |---/
> | Tube | |==
> |__________|---
> |
> |
> Radiator
>
> OK, what gives. I don't think the radiator has been
> changed tho I have no
> prior owner maintenance records.
> The napa TS 6469 sender I have looks to have a 3/4" pipe
> thread and a
> 15/16 nut. It's 2 1/4" in total length.
>
> BTW how does one work in this area - remove the batteries?
> I want to
> replace the oil cooler hoses also. At least they don't seem
> to present a
> problem other than access.
>
> John Massey
> 1977 Royale
> Tidewater Crabs
>

 

[john wright]

The water temp sender is located on the intake manifold at the front of
the engine just to the left of the thermostat hose to radiator. The
device on the radiator is a low water switch. Don't touch it, if you
break it your probably won't find a replacement.

J.R.

>
> sigh....
>
> Working on various projects for GMC (A 1977 Royale), one of which is to
> replace original water temp sender with a NAPA TS-6469 sender.
> Sender in hand, on my back under the GMC, I find things are not going to
> fit. The Radiator has, at the sender location, a tube about 3/4" in diameter
> and about 1 1/4" long. The tube looks to be a permanent attachment, i.e.
> not screwed into the radiator. The sender screwed into the top of the tube
> is much smaller than the napa sender.
>
> |
> |__________ sender
> | |---/
> | Tube | |==
> |__________|---
> |
> |
> Radiator
>
> OK, what gives. I don't think the radiator has been changed tho I have no
> prior owner maintenance records.
> The napa TS 6469 sender I have looks to have a 3/4" pipe thread and a
> 15/16 nut. It's 2 1/4" in total length.
>
> BTW how does one work in this area - remove the batteries? I want to
> replace the oil cooler hoses also. At least they don't seem to present a
> problem other than access.
>
> John Massey
> 1977 Royale
> Tidewater Crabs