Cooling Fan

Just curious, I just bought a '90 LX 2.3L and the fan control is bypassed and the fan runs all the time.. would this cause the car to cool slowly? just curious before I replace the controller thanks, Terrance

Reply to
Terrance Chenard
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might cause engine to come to op temp just a little slower but shouldnt be too much difference

Reply to
Backyard Mechanic

As I recall, (maybe some expert mechanics can clarify) the thermostat is "closed" until the coolant reaches a specific temperature. It's only after the thermostat opens that flow through the radiator starts to occur. That being said, even if the fan runs continuously, "cooling" the radiator... until the engine reaches "operating temperature and the thermostat opens, the fan won't have any significant impact on the engine warm-up. so even if it runs continuously it won't make any noticable difference in warmup times

John

Reply to
nobody

Technically, the fan would move air under the hood and remove heat from the block and heads. In reality, I doubt if anyone would notice the difference.

Al

Reply to
Big Al

Thanks, guys for agreeing with me ...

But here's the clinker, if it's 0deg F ... forget it. Will make a helluva difference in warmup time.

Reply to
Backyard Mechanic

A "cold soaked engine at 0 F is going to take longer to warm up than an engine with a 40 or 50 F ambient temp. I agree it's going to be a longer warmup time from a cold start, but I question the impact a fan running behind the radiator is going to have on the warmup time as compared to 0 F air flowing through the radiator and across the engine while driving at 35 or 40 MPH during the warmup time...

I think that if it were my car, if the fan ran all the time, it'd bug the hell out of me until I fixed it. I just don't like "busted and "J-rigged" systems. After all, the bimetal switch that controls the fan only costs about $15. Small price to pay to not have to listen to the damned thing all the time.

Reply to
jj

you guys are totally right it is bugging the hell out of me... just curious if the controller seems to be screwed would I just change the relay on a 1990 Mustang LX or do i need a whole new controller from the "Yard"? Thanks Terrance

Reply to
Terrance Chenard

brings up the question as to whether it's the switch or the relay.

But it often turns out to be the c> but I question the impact a fan

So do I... but until the engine is doing some work, which means it's putting out more waste heat it IS going to take longer... ie; dont expect it to warm as fast, with fan running, while sitting in driveway at 0 deg and that applies to lower speeds as well.

Reply to
Backyard Mechanic

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