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Subject:Jetta Conversion. Coolant Sensor DTC. WBX Temp Gauge LED Cause This?
From:neil n
Date:Sun, 11 Jul 2010 19:34:41 -0700

Hi all.

A while back, I installed a WBX coolant gauge and Low Coolant Warning
Unit. I did not check for DTC's at that time. Recently, I'm getting a
"Coolant Temp Sensor: Intermittent Short To Ground" DTC.

Could the WBX blinking LED in temp gauge at startup (normal), trigger this DTC?

A3 Bentley shows the temp gauge portion of sensor consisting of a wire
to ground, and a wire to Jetta instrument cluster. But... The sensor
housing contains 2 sensors. One for ECU, one for gauge.

I doubt there's anything connecting the 2 sensors within the housing,
and I don't know how the WBX gauge is wired internally (LED et al),
but really can't find fault anywhere else that would create this DTC.

This is for an ABA/Motronic 2.9 OBD1 engine swap.

Thanks,

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines