cooljerk187

Hey guys, i am almost completed sorting out all of my problems with this car.. got my boost back, toubleshooted a few bad sensors, and got the thing running for more then 1 mile, thanks to your help. The thing now is, after that 1 or 2 miles of driving under load, the car will throw a code and die a few seconds later. Checking the code i have a code 09---- Thermostat... i have replaced it 800 miles ago, with no problems until now. My question is can the car be too hot causing the ECU to think the t-stat is not functioning? Or could the sensor be bad alltogether? Ways to check it?

obviousboy

i would have to think its the sensor being stupid.....

2a+RoN

Well, first off, check code 9 again. According to my sources, that is the water thermosensor not the thermostat. I had the same code thrown a while back. It's a little sensor on the back of the water pump housing. It's kind of a pain to replace but it's doable. Also you might want to look into replacing the stock thermosensor with a miata one as I think it changes the signal to the ECU so that the radiator fans kick on at a lower temp.

obviousboy

good point...theres no way you car can throw a CEL for an item like the thermostat..its mechanical

cewrx7r1

iTrader: (2)

Remove the themosensor and check it per the manual. If you have an aftermarket water temp gauge, and it reads normal, then there is your answer.

2a+RoN

After rereading your post, I am not sure what you were exactly refering to, so if you already knew it was the sensor, then do not take offense.

cooljerk187

I was calling it the thermostat code, due fact that the scuderani website calls it that... i checked the mazda manual on iluvmyrx7.... and got a good deal of things to check, sry about my confusion.