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1G FMIC Install: Low coolant temps driving but very high while stationary

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Ski Bum

15+ Year Contributor
231
3
Nov 17, 2005
Citrus Heights, California
I just recently installed a FMIC on my 1G. Along with it I installed a 14" SPAL fan and wired it into the factory harness so it comes on automatically like the factory fan. Also while the radiator was out I flushed it removing ALOT of gunk. I took out the A/C condenser as well. Fitment was a bit tight with the compressor outlet piping leading to the FMIC and the radiator but no problem.

What's happening now is my coolant temps will hit 230*+ while stopped and idling or after being parked for a bit then restarting. While driving the temps stay around 175-195*. These readings are from a dataloger, the factory gauge sits between 11 and 12 on a clock while driving and will reach within a few mm's of the second from the right tick on the gauge when stationary. The fan kicks on normally like the factory unit and draws much more air than it.

Any ideas on why the temps are so high now?
 
double check the relay and fuse for the fan. since it probably draws more power because it is a larger fan it may have poped a fuse. does the fan still turn on automatically like it should?
 
toomey200 said:
double check the relay and fuse for the fan. since it probably draws more power because it is a larger fan it may have poped a fuse. does the fan still turn on automatically like it should?

Yes, it still cycles on and off as the factory fan did.
 
230 is really high, I thought I had a problem with 21x's. Check your thermostat and coolant. I put in a 180, 70% distilled water 30% coolant and 1 bottle of water wetter. I have a fmic 24x12x3 and my temps stay around 203 right now in traffic with 1 fan always on (ordered the 2nd fan) Once I get my 2nd fan I'll make that always be on as well. I'm going to make some ducting of some sort as well. Anyways just some ideas good luck.

Also I'm not familiar with the spal fan's but maybe you have it on the low setting only?
 
its kind of a manditory anwser but try a bigger radiator, that or another fan on the other side of the radiator
 
Ski Bum said:
I just recently installed a FMIC on my 1G. Along with it I installed a 14" SPAL fan and wired it into the factory harness so it comes on automatically like the factory fan. Also while the radiator was out I flushed it removing ALOT of rust. I took out the A/C condenser as well. Fitment was a bit tight with the compressor outlet piping leading to the FMIC and the radiator but no problem.

What's happening now is my coolant temps will hit 230*+ while stopped and idling or after being parked for a bit then restarting. While driving the temps stay around 175-195*. These readings are from a dataloger and the factory gauge sits between 11 and 12 on a clock while driving and will reach within a few mm's of the second from the right tick on the gauge when stationary. The fan kicks on normally like the factory unit and draws much more air than it.

Any ideas on why the temps are so high now?

If you have the right amount of coolant/water in there and the fan is kicking on when its supposed to and the thermostat is opening you shouldnt have a problem no reason why it should get that high. FYI: oil breaks down @ 220*
 
The thermostat (160*) is only a couple thousand miles old.

As far as coolant I'm about 70% water and 30% coolant. I originally had some water wetter but forgot to tighten the lower hose and it blew off while idling after the install ROFL. I'm planing to add another bottle of the stuff and see if it helps at all.

The fan is mounted just to to the left (passenger) side of the radiator. I think another one will fit on the drivers side. The SPAL only has one speed setting.

Should both fans pull or one push and the other pull?
 
Depending on which side you mount the fans on will determine if they should push or pull. If they are mounted like the came from the factory then they need to pull, if you put them facing the motor then they will need to push.
 
playitlouddsm said:
Depending on which side you mount the fans on will determine if they should push or pull. If they are mounted like the came from the factory then they need to pull, if you put them facing the motor then they will need to push.


They are mounted inside the engine bay like the factory units.

Should the fan continue to run at all when the engine is shut off?
 
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