Water Temp Driving me Crazy!

[Zayd]

Please can someone give me some peace.

My coolant temps were eratic to say the least, so I had both the Coolant temparature sensor and the thermostat replaced about 6 months ago.

It was all working fine until now, with the same situation as before.  The water temp will not reach 90c but get to and stay at around 70c.  If I use my heaters then it will drop a little.  The heaters are working fine, blowing out a steady stream of hot air, without any unusual noises or pauses.

Does anyone know of any other cause that it could be other than the obvious being the thermostat again.  I wouldn't have thought that the thermostat, I replaced would fail so soon.  It was a brand I've never heard of though, Circoli, bought from Euro Car Parts.

Thanks in earnest.

[Screech16v]

Says stat all over it,ive just replaced mine with the same brand,hope it last longer than 6 months though

[stfc_gti]

I would say its a faulty thermostat, I had mine replaced with a faulty one so needed to be replaced again.

[mar_k]

ive used circolli in mine, not had any probs so far, i have also used them in previous cars with no issue

[EsSeX dAn]

did you use a genuine temperature sender? most people recomend only using genuine one