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Operating Temp and Darn Birds!!
#665173 July 01st 2014 1:20 pm
Joined: Oct 2001
Posts: 663
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Joined: Oct 2001
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Hey Guys,

This falls under the category of: "Correct me if I'm wrong"....

On my 77 Dodge Shorty - I was problem solving a dead temp gauge. Thus far I:

* Cleaned contacts at both ends, including thru the bulkhead, and measured for resistance (it was .004), and had continuity.
* I grounded the lead and watched the gauge move to hot so I knew it worked.
* I changed sensors to a new one I picked up from Pep Boys.

The good: It works. The bad: It can't be right.
[Linked Image]
The van is running down the road happily at 230+ degrees and at a stop sign with travel to 250 with no signs of overheating or knocking coming from the Rad. So now correct me if I'm wrong, but my next move should be to try the old sender again? I can't believe the van wouldn't overheat at that reading if this were a thermostat issue. I recall the van always reading at about 170 on that dial.

It's important to note that I did measure higher resistance along the wire as it was hot. Dunno if that makes a difference or not. I did not have this problem before when the gauge worked last (within the year).

And, I leave my windows open overnight and come out to THIS in the morning! Darn birds! That's never happened before!
[Linked Image]


[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
Re: Operating Temp and Darn Birds!!
RavshngOne #665175 July 01st 2014 1:30 pm
Joined: Aug 2001
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Woah! Those Jersey birds don't mess around.

You are righjt- step one is to verify that you have a sending unit that it rated correct for your year. I know they did change ratings but were physically interchangeable over the years.

If the van still overheats with a correct sending unit, try replacing the thermostat.


Windows- they're what make a van worth owning!
Re: Operating Temp and Darn Birds!!
RavshngOne #665261 July 02nd 2014 1:16 pm
Joined: Oct 2001
Posts: 663
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The original sender seemed to do the trick. On a very hot day here in NJ (93 degrees + humidity), van warmed up and ran at about 180-190 on the gauge on a 5 mile round-the-block test.

Thanks Reed....


[Linked Image]
Chris (The Ravishing One)
1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
1993 Dodge B250 Hi-Top V8-318
1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)

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