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Spyder Overheating Cause of Fan?

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Tkzdsm

Proven Member
92
4
Sep 22, 2024
Henderson, Nevada
I live in Vegas and it’s getting to be in the triple digit degree weather. I haven’t had any overheating issues ever but now I’ve been seeing that my car overheats when I drive for about 20-25 minutes at a time in the 100 degree weather.

I replaced the thermostat since it wasn’t opening properly and it wasn’t burping the coolant system properly and now it is totally good and full of coolant but I still overheat when I drive for too long.

When I got home today I was starting to overheat a bit. I popped the hood and saw only one of my front radiator fans blowing. the one in front of the exhaust manifold wasn’t blowing. Would something simple as that be the cause to overheating? I heard that if you turn your A/C on then both fans should kick on for about 10-15 seconds but only one of them do.

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Hows it going do you have a FMIC ? if so do you have any ducting ? Back in the day I was able to drive my car to las vegas in the heat making 600 plus HP in my case it was all about the ducting. I had 2 fans one 2700 cfm and the other 1650 cfm.
Hope this helps also I was doing pulls and this is with a 160 thermostat
 
Hows it going do you have a FMIC ? if so do you have any ducting ? Back in the day I was able to drive my car to las vegas in the heat making 600 plus HP in my case it was all about the ducting. I had 2 fans one 2700 cfm and the other 1650 cfm.
Hope this helps also I was doing pulls and this is with a 160 thermostat
Frank would know he lives in that heat good guy to get you the right help 👍🏻

Yes only 1 fan in that kind of heat will cause it to OH.
Ya need 2 fans going in that kinda heat
 
Hows it going do you have a FMIC ? if so do you have any ducting ? Back in the day I was able to drive my car to las vegas in the heat making 600 plus HP in my case it was all about the ducting. I had 2 fans one 2700 cfm and the other 1650 cfm.
Hope this helps also I was doing pulls and this is with a 160 thermostat
Yes I have an FMIC, I’ve heard from other posts that the fmic+ bumper= not enough air to the radiator, what does your ducting look like? would anyone know any good aftermarket radiator fans?
 
Yes I have an FMIC, I’ve heard from other posts that the fmic+ bumper= not enough air to the radiator, what does your ducting look like? would anyone know any good aftermarket radiator fans?
I basically made sure the air has ducting between the FMIC and the radiador. I used sheet metal and Duct tape and checked my work buy adding a 1 dollar bill to the front of the intercooler and made sure it sticks to the intercooler whe the fans are on.
 
Yes I have an FMIC, I’ve heard from other posts that the fmic+ bumper= not enough air to the radiator, what does your ducting look like? would anyone know any good aftermarket radiator fans?
mishimoto or spal make good fans I would say go to fans that guys use don’t use cheap fans
 
If you don't have a need for a slim fan, the stock fan is the way to go. Before assuming the fan is bad, might want to test it first by applying 12v directly to it to see if it works. Check the relay also. You can also use a short length of wire to jump the relay to force the condensor fan to come on at the same time as the engine fan, regardless of whether or not the a/c is on and engine temp.

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Put voltage on fan connector (unplug first) to test fan. Note the stock fan speeds are not obtained by voltage on a unique specific wire pair but rather voltage on wire combinations (https://www.dsmtuners.com/threads/cooling-issue-plus-wiring-the-fans-up.273645/#post-151311484).

To test fan relays just swap the radiator fan lo relay {pass side fan} (engine fuse box lower row 3rd from right) with the condenser fan lo relay {drivers side fan} (engine fuse box lower row 1st from right) one.

[And if needed just FYI the radiator fan hi relay {pass side fan} (engine fuse box lower row 5th from right) with the condenser fan hi relay {drivers side fan} (engine fuse box lower row 2nd from right) one.]

All relays are the same part.
 
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