thermostat stuck open? you have to check temp at the radiator using a
thermometer gun...

I had a similar case... solved by adding ground at the temp gauge switch.

On Thu, Oct 17, 2019 at 4:30 PM Mark McCulley <markmcculley@gmail.com>
wrote:

> Today while on a 150 mile drive back home I noticed the needle on the temp
> gauge was only half way between the low mark and the LED. Normally when the
> van is warmed up the needle sits at the lower edge of the LED. Everything
> else seems to be normal.
>
> Could the thermostat be stuck open?
>
> -Mark
> ‘87 Syncro