Jump to content

03 Mazdaspeed Protege, coolant question


TurboGoKart
 Share

Recommended Posts

For a friend. We replaced the stock fan with a slimline fan, he drove the car home, coolant was boiling. Neither of the fans were on. But, the temp gauge inside read normal. :confused:

 

I'm thinking that the thermostat is bad? The fuses for the fans are fine. Slimline fan was tested on a battery before it was installed and it worked fine. I just didn't understand how the coolant could boil and the temp gauge inside read normal. Unless it's just because it's a Mazda? Lol. Any ideas before I tear the thermostat out?

Link to comment
Share on other sites

Some aftermarket fans use their own temp probe in the radiator, but I guess the slimline you talk about doesn't. By fixing the fans, I meant to check to make sure that was set correctly.

 

Turn the A/C on while the car is running. If the fan is wired up correctly and the ECU is working properly, the fan should turn on. If this works then it is likely the Temp sending unit is bad.

 

The coolant could boil and the gauge still read close to normal if the coolant system isn't pressurizing. If that was happening you would likely notice a loss in coolant level though. So more likely the temp sending unit is bad.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...