Mazda MX-5 Miata banner
Cancel
Create thread New Garage Forums

Which Thermostat?

Jump to Latest
11K views 19 replies 10 participants last post by  RJF  
#1 ·
Noticed today that my temp dropped off a fair bit whilst the motor wasn't under load. Yes it was baltic and the heater was on full chat to keep my hands and legs warm, but I think it's time to check the thermostat. I've seen folks mention different temps, and also pattern vs genuine Mazda. There is a wide spread of prices, from around £10 for the MX5Parts pattern item, to double that for a genuine one.

What is the definitive answer to which thermostat for an un-tuned 1.6 import NA?
 
Discussion starter · #12 ·
Thanks for the replies folks. Original one it is then. It's baltic today and on a 15 min journey the temp gauge didn't budge. Should I do full drain of the coolant or can I get away with a partial? The coolant's only 2 months old.
 
Discussion starter · #18 ·
MX5Parts sent a new genuine thermo out in super quick time, and today I popped it in. Made sure I soaked the bolts the day before in WD40, and they came right out with no fuss. The old one was a pattern item, and looked like it was stuck open to me. Cleaned the old gasket off the housings and put it altogether again. Fired it up and I had heaters in double quick time. By the ice on the windscreen I've timed this well. :thumb-up:
 
Mazda MX-5 Miata
posts
2.2M
members
33K
Since
2007
A forum community dedicated to Mazda MX-5 Miata owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
MX-5 / Roadster Forum Off Topic Lounge Members Rides General Car Chat Forced Induction & N/A Power Mods