VW Golf mk2 1.6TD coolant sensors

November 07, 2023, 04:15:29 PM

Hi guys.

Need a little help here.
My Golf 1.6TD is having some issues with the glow plug indicator and coolant temperature gauge.

When in cold start, the glow plug indicator (yellow) stays on for about 15s and after 45s off (engine running) it flashes 15 times. I notice that during this ~1min engine oscilate iddle rpm. After the flashing, it turns stable.
When running normal (engine ~80ºC), the coolant temperature indicator is near the 3rd mark (on the overheating side), but the overheating alarm doesn't light. I check the coolant temperature, and it's normal. Cooling fan and it's (new) sensor are working fine.

I replaced the thermostat, the coolant and the 2 temperature sensors (on the front flange) but the issues keep on.

What are the recomended thermostat and coolant temperature sensors? References, please.

Thank you all very much.