Overcooling

Postby **NitroDann** » Fri Dec 09, 2011 10:09 am

I think he is saying that his guage sender is on the cold side of the thermistat, then it seems that it stays cold for a few minutes and then when the thermostat opens it jumps up.

Id check the thermostat.

Dann

mitch_f1 · Postby **mitch_f1** » Fri Dec 09, 2011 6:17 pm

^^ exactly right. I will be checking thermostat. I am 90% sure that the gauge is fine, as I got it brand new, and it is a VDO gauge. Plus there isn't much to go wrong in a mechanical gauge. Also, sorry for the hijack

project.r.racing · Postby **project.r.racing** » Fri Dec 09, 2011 6:21 pm

Makes sense. Thermostat must be openning early them. Should be 82C for NA6 and 88C for all others. My old man memory isn't good though.

Postby **mrpham** » Tue Dec 13, 2011 1:17 pm

Had similar issues, just crappy Tridon thermostat. Never seem to have much luck with them.

Years ago I bought a Tridon one for my Daihatsu Feroza and that was stuck closed, then bought one for my Nissan S15 and that wasn't opening fully.

Staying with genuine from now one

mitch_f1 · Postby **mitch_f1** » Tue Dec 27, 2011 2:24 pm

Took out the genuine mazda thermostat today and boiled it up to see when it was opening, and it is fuly open by about 84*C, which does not explain why my around town temperature is about 60-70*C. Suggestions?

project.r.racing · Postby **project.r.racing** » Tue Dec 27, 2011 5:34 pm

what temp did it start opening is the real question, doesn't matter where it fully opens.

Postby **NitroDann** » Tue Dec 27, 2011 5:52 pm

what prr said.

Dann

mitch_f1 · Postby **mitch_f1** » Tue Dec 27, 2011 7:36 pm

Around about 80*C, was approx fully open by 84*C

mitch_f1 · Postby **mitch_f1** » Sun Jan 01, 2012 10:31 pm

I am now pretty sure that it is the gauge, as after an easy drive it showed a reading on 120*C. The cluster gauge read just below middle and the fan was not on. Over the space of about 5mins it went from 120*C to 80*C to 100*C. Gonna call up rare spares (where I got it from) tomorrow