[TR] Getting close on the TR4A

[Geo Hahn]

Dave -

I always drill a little hole in the thermostat (some come that way) just to
be sure the system fills well.  But having said that, from your description
I would be more suspicious of the radiator cap than the thermostat.

More car parts places (even chains) have a loaner tester for the radiator
cap.

Geo



On Mon, Sep 23, 2013 at 4:29 PM, Dave Connitt <dconnitt at fuse.net> wrote:

> I figured out how to post videos on YouTube and have one of a walk around
> the
> car and one of the engine running.
> Just do a search on DAVESTR4A. They aren't very long but you can see the
> car.
> I have a overheating problem that I think is related to a air bubble in the
> thermostat housing?
> First symptom is that the temperature gauge doesn't work and the fuel gauge
> does.
> Second symptom is that the top radiator hose expanded about 50% larger
> before
> things started leaking.
> At first I thought the sending unit on the temp. gauge was bad because i
> shorted the sending unit wire to ground and the gauge went full scale so I
> ordered a new sensor.
> After I ordered it, I got to thinking that maybe the entire thermostat
> housing
> was all air inside so the thermostat never opens which forces the top hose
> expansion.
> Well, I tore one of the gaskets in the thermostat housing last night
> trying to
> run without a thermostat and decided it would be a good time to quit. I
> know I
> checked the thermostat before I installed it and it opened about 190 or so.
> I couldn't get to it tonight but thought I would share my problem and see
> if
> anybody agrees.
> Dave Connitt
>
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