All Things Mk5 > How to Guides / Troubleshooting
Operating Temperature Not Reaching 90
lukemk5gti:
--- Quote from: chris s on November 02, 2014, 05:09:15 pm ---I've got a temp sensor I never used it you want it...£15? I had the same issue with my car and it definitely sounds like it's the main thermostat to me
--- End quote ---
Did you have vw do this or did you do it yourself?
How did you/they diagnose it?
jaye2992:
--- Quote from: chris s on November 02, 2014, 09:36:49 pm ---Yeah that's the one I've got spare, but to be honest it does sound like mine which was fixed when I had the main thermostat replaced
--- End quote ---
Is it a new one you have with a new seal? Thinking of changing it anyway as today to work and back it seemed fine. The garage are finding the parts invoice to check what they have had changed....
jaye2992:
Changed the grey sensor today and everything seems to be the same....is it normal for the gauge to say 90 and then in the torque app the coolant temp says 77? Also is there only 2 coolant sensors on the gti? Sorry for all the questions!
skard:
I had the same issue and fixed it by changing the main stat.
My Fiscon says ~75c+ when the cluster gauge says 90c.
If it fluctuates then I'd say it is failing.
jaye2992:
Ah boooo, garage must not of changed it when i bought the car then......great! Just as i thought so best get it booked it for a change. Do you know if the green sensor is the one on the actual thermostat?
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