Running into some over heating issues. Anyone know how I can add a manual override? Can I just run a wire through a switch in the dash to ground?

 

How about fix the problem causing the overheating?

 

I already have done everything I could including replacing the thermostat, burping and flushing the coolant, the reason I think it's overheating is I'm using a half sized aluminum radiator because I had clearance issues with my turbo.

It is an eBay dual core radiator, had anyone else had issues with heating with the half sized radiators?

 

The Civic came with "half-sized" radiators. This isn't a Civic?

 

CRX, actually sorry. I also replaced the water pump too. Maybe I can try the OEM fan since I'm using this slim fan.

 

You need a shroud if you're rocking a slim fan. Ask me how I know.

 

This is the incorrect forum, no?

 

Lol now I'm curious, how do you know?

 

Because I run one. The OEM fan flows way less CFM and cool tons better than a simple slim fan. The only difference that matters is the shroud. Either get one or try and remount the OEM fan until you decide to.

 

I'll try to mount the OEM fan and report back

 

Car information is typically required for tech posts.

Thread has been moved to the proper CRX forum.

Glad you have been provided adequate feedback even with the lack of details provided about the vehicle.

 

To answer your original question:

Yes, you can run a wire from the fan switch, to a manual switch in the cabin, and then the other side goes to ground. Just tap into the fan switch power wire, T it off. Keep one going to the fan switch, then the other goes through the firewall, into the cabin to your switch. Run a wire from the other side of the switch to ground.

 

You can ghetto fab it 100% by just connecting the wires that go to the thermostat. It will run with the key in the ignition.

 

Thanks everyone, man I LOVE this forum you guys are all amazing help. I replaced the fan with the OEM fan and shroud and it seems to work much better than the slim fan and I still have plenty of room. The OEM fan and shroud seems to cover close to 95% of the radiator surface so I think it will suck air through the core much better than before.

I also ran a wire from the green/yellow wire to a ground switch on my dash so I can manually turn the fan on if needs be. Also FYI, the thermo-triggered switch works still so it does automatically go on at around 220F (According to my GlowShift Temp guage) Oddly enough the stock temp guage only starts climbing to the H when the temperature starts exceeding 240F which I want to avoid, can anyone confirm these temperatures and what optimal temperature/maximum temperatures would be?

So far looks OK, didn't take it out for a long drive but the temperature seemed under control around 200-210F.

QUESTION: Does anyone here know when the thermostat opens at, what temperature? I replaced the thermostat when I had the head off a few days ago just to be safe.

 

Your thermostat will open at what temperature the manufacturer specified. OEM spec thermostats should begin opening at 78*C (172*F) and be fully open at 90*C (194*F). Aftermarket thermostats usually open quicker (at a lower temperature).

The temperature switch should turn on the fan within the temperature range: 88.5-91.5*C (191-197*F) and cycle off once temperatures drop to within 83.5-86.5*C (182-188*F)

 

This would imply he is still running hot. OP, you may have air in your cooling system. It should keep the motor cooler than the temps you are seeing.

 

If the fan is cycling on and off, i would think his gauge is wrong.