All Things Mk5 > How to Guides / Troubleshooting
Ed30 Temp Gauge Drop When Coasting
GrayMK5GTI:
^thanks.
I'll try to get some logging done later. I've read on the MK6 GTI forum that's it's quite common fault with those. They are all getting the thermostat replaced.
V2 FAN:
--- Quote from: GrayMK5GTI on March 14, 2014, 04:05:35 pm ---Thanks matey!
Is yours an Ed30? I heard they have different thermostats to a GTI. Was hoping to pin it on that :sad1:
It's looking like the thermostat is not working 100% right then.
--- End quote ---
Hi mate yes it's an Eddie :happy2: was out earlier and checked to confirm but it's certainly a steady Eddie at 90 :laugh:
GrayMK5GTI:
Just been out for a drive. Did the little trick with the climate display to get the coolant temp shown in the display. Although the dash gauge was showing 90 degrees, the climate display was showing the coolant at around 74-76 degrees driving around at 30mph. I did a long run on the by-pass and allowed it to coast in gear where the climate dropped down to 70-71 degrees and the gauge dropped by one notch by the time the car had slowed from 80mph to 10mph.
I pulled over and the gauge moved back up to 90 degrees. I let the engine idle until the climate display showed 87 degrees where I could feel the heat on the radiator so the thermostat must have opened. When the climate said 89 degrees, the fan switched on and the temps dropped. During this, the gauge stayed at 90 degrees.
So to summarise, when I'm driving normally it holds 90 degrees on the gauge no problem, but after a long coast in gear from speed, the gauge drops a little.
GrayMK5GTI:
Done another load of reserch and i've seen threads on the Briskoda & Audi Forums where others have had the same problem.
Its looking like the thermostat is sticking a bit. Not a serious issue, but something that i'll get round to!
MichaelR:
--- Quote from: GrayMK5GTI on March 14, 2014, 09:39:58 pm ---Did the little trick with the climate display to get the coolant temp shown in the display.
--- End quote ---
How do you do that?
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