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Old 06-07-2010, 02:55 PM
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electric fan ?

hi guys i have a new 350 with a 14 in electric fan and a 195 stat with a switch that my fan goes on at 200 and off at 185 my problem is that once my fan goes on at 200 my temp is staying at 200 and my fan is not going off since it is staying at 200.
any ideas ?

let me know dan

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Old 06-07-2010, 03:08 PM
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I am sure you have checked this;

radiator full of coolant.
getting good air flow through the radiator.

Can you move the thermostat to a remote location so it can cool down? That way you can determine if the thermostat is faulty on the cool down cycle.

Good luck.

BT
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Old 06-07-2010, 03:28 PM
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Quote:
Originally Posted by Area_51
hi guys i have a new 350 with a 14 in electric fan and a 195 stat with a switch that my fan goes on at 200 and off at 185 my problem is that once my fan goes on at 200 my temp is staying at 200 and my fan is not going off since it is staying at 200.
any ideas ?

let me know dan
how can it go off @ 185 if you have a 195 stat?????
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Old 06-07-2010, 03:55 PM
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electric fan ?

well my stat is a 195 but my switch witch tells it when to go on and off tells it it to go on at 200 and off at 185
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Old 06-07-2010, 03:59 PM
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Quote:
Originally Posted by Area_51
well my stat is a 195 but my switch witch tells it when to go on and off tells it it to go on at 200 and off at 185
You need either a lower rating 'stat, or a higher "off" setting, like 406 bug alludes.
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Old 06-07-2010, 04:16 PM
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electric fan ?

i tried a 180 stat dose the same thing
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Old 06-07-2010, 04:49 PM
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If you fan is running and not bringing down the temp either your fan is not moving enough air or your radiator is a little to small.
Is is any better on the highway. If it cools down on the highway then most likely it is a fan (not enough cfm ) issue.
Is there a shroud for the fan.
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Old 06-07-2010, 04:51 PM
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14" electric fan is likely not big enough unless you build a custom shroud for it that covers the entire surface of the radiator. Just a 14" round fan stuck in the middle of the backside of the radiator isn't going to cut it, you are only using the 14" diameter circle in the center of the radiator to remove heat and not the total radiator surface.
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Old 06-07-2010, 05:57 PM
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electric fan ?

theits a puller fan so its on the grill side of the radiator
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Old 06-07-2010, 06:02 PM
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A "puller" should be on the engine side of radiator with a shroud going out to edges of radiator. If you have a "puller" fan on the grill side of radiator it is on backwards. You want to "pull" cool air from the front of radiator thru the radiator.
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Old 06-07-2010, 06:46 PM
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electric fan ?

sorry i ment pusher sorry
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Old 06-07-2010, 07:19 PM
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Using the fan as a "pusher" lowers its efficience something like 25%. It is a lot harder to push air through something than it is to pull it.
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Old 06-07-2010, 08:59 PM
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Hello Dan. Remove the electric fan and sell it to someone else who wants it worse than you do. Go to your local boneyard and rescue all the mechanical fan parts off your model car and install them. 18-inch, 7-blade fan, shroud and thermostatically-controlled fan clutch.

Chevrolet Division of General Motors spent millions of dollars figuring out how to cool these motors reliably and under all conditions. The parts the engineers used are as close as the nearest boneyard.
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Old 06-09-2010, 02:04 PM
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electric fan ?

i don't have the room for a mechanical fan i only have a fingers with between my pulleys and my radiator
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Old 06-09-2010, 02:21 PM
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a 350 needs lots of air to cool down.

3000 cfm would be about right. most fans do 1/2 that, so holding at 200 is a pretty good result. especially since the fan is being used as a pusher and there is no room between the pulleys and the radiator.

If the fan runs all the time then that is ok. 200 isn't that hot.

does the fan go off on the highway?

what car are you working on?
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