06-07-2017, 10:46 PM
water temp wrong, is a first order problem.
fix first.
if you had a scan tool (real) it shows ECT doing same funny wild dance?
that means AIR pocket, for sure. (both sensors can not read air temps at all , they work only SUBMERGED)
if not that means the Dash temp gauge sensor is bad, or its wire is loose rusty or like seen many times the 1 wire gauge sensors pin is damaged and loose and flops about. BAD.
hot engine 180F
key off
take off ECT sensor, connector DMM ohms meter to the 2 sensors pins , 300 ohms = 180f per my ECT chart.
and auto ranging meter shows.
K in the LCD window.
and 0.3K = 300 ohms so show 0.3 on dial,, and the K mark tell you its x1000 range, .3 x 1000 = 300.
fix first.
if you had a scan tool (real) it shows ECT doing same funny wild dance?
that means AIR pocket, for sure. (both sensors can not read air temps at all , they work only SUBMERGED)
if not that means the Dash temp gauge sensor is bad, or its wire is loose rusty or like seen many times the 1 wire gauge sensors pin is damaged and loose and flops about. BAD.
hot engine 180F
key off
take off ECT sensor, connector DMM ohms meter to the 2 sensors pins , 300 ohms = 180f per my ECT chart.
and auto ranging meter shows.
K in the LCD window.
and 0.3K = 300 ohms so show 0.3 on dial,, and the K mark tell you its x1000 range, .3 x 1000 = 300.
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