Cooling fans restricting air flow 45 MPH and up !!!!
Ok I had my PCM tuned my ION@MADZ28 . Well i chose to have the cooling fans come on at a lower temp than stock . Well this is my problem ....
The car runs cool and just fine in town driving (anything 40 mph or below) . When the car is moving 41 MPH and up while the cooling fans are still on they (cooling fans) become a restriction to airflow causing the car to heat up more than usual . My Cooling fans are staying on at 41 mph and above because the PCM sees the coolant temp not dropping (caused by the fans on at highway speeds) . I need the fans to turn off while at highway speeds so the car doesnt heat up . Am I explaing myself correctly ? cuz my point is If the Cooling fans are on high at highway speeds they become a restriction to airflow getting to the radiator to cool the car down . |
You think theyre that much of a restriction? They're behind the radiator?
-b |
Yes because the fans can pull only so many cfm's while on the high
setting . There is more cfm's of air coming into your radiator at highway speeds than the fans can pull through . so the air doesnt get pulled through the radiator cuz the fans are acting like a wall keeping fresh air from getting through . |
How do you "know" they are a restriction? Maybe you have an air dam problem. That would be more common.
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Originally Posted by AZ2ENVY
(Post 4743215)
Ok I had my PCM tuned my ION@MADZ28 . Well i chose to have the cooling fans come on at a lower temp than stock . Well this is my problem ....
The car runs cool and just fine in town driving (anything 40 mph or below) . When the car is moving 41 MPH and up while the cooling fans are still on they (cooling fans) become a restriction to airflow causing the car to heat up more than usual . My Cooling fans are staying on at 41 mph and above because the PCM sees the coolant temp not dropping (caused by the fans on at highway speeds) . I need the fans to turn off while at highway speeds so the car doesnt heat up . Am I explaing myself correctly ? cuz my point is If the Cooling fans are on high at highway speeds they become a restriction to airflow getting to the radiator to cool the car down . |
I don't think the fans are your prob., be sure the AC condenser and front of radiator are not dirty, a plastic ice bag got me on the interstate once, don't take much to get too hot. Danny Mc
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Originally Posted by shoebox
(Post 4743243)
How do you "know" they are a restriction? Maybe you have an air dam problem. That would be more common.
see a temp difference when the fans arent on at highway speeds . |
Hey do you guys think this could be contributing to my highway
cooling issues ??? http://i2.photobucket.com/albums/y10...9698679004.jpg http://i2.photobucket.com/albums/y10...9698679003.jpg |
Here is the piece thats missing from the first pics i posted . This plastic
shroud encloses the radiator from the engine bay . I removed it and didnt put it back in thats why you can see the trans cooler and radiator when the hood is popped . http://i2.photobucket.com/albums/y10...9698679007.jpg http://i2.photobucket.com/albums/y10...9698679006.jpg |
Originally Posted by AZ2ENVY
(Post 4743322)
Hey do you guys think this could be contributing to my highway
cooling issues ??? http://i2.photobucket.com/albums/y10...9698679004.jpg http://i2.photobucket.com/albums/y10...9698679003.jpg |
Is there a gap for the trans cooler? Do you have an oil cooler up there too?
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Originally Posted by bdc95ta
(Post 4743369)
Is there a gap for the trans cooler? Do you have an oil cooler up there too?
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Originally Posted by speed_demon24
(Post 4743368)
Yes
Thank you :) |
See, it is not your fans at all. You removed an important piece that directs the air to the radiator. It's the same as removing the air dam.
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Originally Posted by shoebox
(Post 4743690)
See, it is not your fans at all. You removed an important piece that directs the air to the radiator. It's the same as removing the air dam.
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