First post on here so hey guys, I recently bought another rx7, this one is a 1989 fc vert, overall the car is in good condition, previous owner did do a couple mods to it ( catback & aftermarket radiator and electric fan ) The only problem I'm running into is when I'm going up hills the temp gauge will slowly go up. Driving in the streets, downhill, and stop and go traffic i never run into this problem. A couple people I have talked to about it mentioned that my fan may just not have enough power to suck enough air through the radiator when pushing it up hills but i just wanted to see if anyone here has gone through this before and if so how they managed to fix this issue, thanks for the read and i hope to get some feedback !

 

The electric fan is probably the issue. Not a "fan" of electric fans. It's easy to go back to stock.

 

Do you actually know the temp Variation when you do this type of driving?
The Stock gauges are really just a nice thing Mazda stuck in the cluster to take up space.
they tell you absolutely nothing about temp!
You'd be helping yourself by purchasing and installing an Aftermarket gauge.

 

I don't know the exact temp of the car when driving, I was thinking of getting a gauge just for more of an accurate reading of the temp but just haven't had the time to go out and pick one up.

 

hmm, I may try this out. I was going to try out a high cfm electric fan but if I can get my hands on a stock set up I may try to run that.

 

Post pics if you can of the engine bay and particularly the rad/Shroud parts.
that is,IF you do have a shroud.

 

i agree, go back to the stock belt driven fan. it works great on my turbo II, never overheated and im even using a plastic radiator, no fancy aluminum radiators for me, also id check to see if your thermostat is stuck and might need to be changed out

 

I'll be able to upload photos tomorrow, just didn't have a good time today to take a photo of it lol

 

hmm, two for two on the stock fan ! Going to the local junk yard to see if i can find the whole set up, if not any recommendations on where I can find the whole set up ?

 

Ya,the reason why is that you can have a decent E-Fan on there but if the fan just sits there and has no shroud on it then it can't effectively suck air through the rad and cool the engine when it desperately needs it.
Mind you,it is normal you will see an increase in temp(slightly) when the car is working itself up hills.
The stock gauge will rise (S5 would be maybe about 2/3 of the gauge).
BUT then again I have never trusted Stock gauges on these cars and I toss an Aftermarket TEMP gauge on the fiorst chance I get.
The damn thing has saved me more than I can shake a stick at!