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E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 02-05-2013, 03:22 PM
austenjm90 austenjm90 is offline
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Location: Columbia SC
 
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Mein Auto: 1991 318is w/ M50 Engine
M50 engine overheating

I'm new to bmws, just bought a 91 318is with an M50 engine. Im not sure if this should go in the e30 or e36 thread..
Driving it home it would overheat while idling. After doing some research I realized my car doesn't have a fan on the front of the engine.
It does have one on the front of the radiator which I assume is the aux fan. Is it necessary to have the engine fan?
Thanks
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  #2  
Old 02-05-2013, 04:18 PM
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garagistic garagistic is offline
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Location: CALIFORNIA
 
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Mein Auto: e30
Quote:
Originally Posted by austenjm90 View Post
I'm new to bmws, just bought a 91 318is with an M50 engine. Im not sure if this should go in the e30 or e36 thread..
Driving it home it would overheat while idling. After doing some research I realized my car doesn't have a fan on the front of the engine.
It does have one on the front of the radiator which I assume is the aux fan. Is it necessary to have the engine fan?
Thanks
Yes with a m50 swap its needed. A spal puller fan is a great option. However, you can work the aux fan using the AC switch (the one with the snow flake on it) inside your car. If you press the button and the fan does not come on, you will need to check the aux fan/wiring.

Note: The aux fan may not be enough.

What radiator are you using? M42?
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  #3  
Old 02-05-2013, 05:12 PM
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downhiller downhiller is offline
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definitely look into another electric fan. that way, if the ac does work, you get good cooling for both the radiator and condenser coil
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  #4  
Old 02-05-2013, 05:41 PM
austenjm90 austenjm90 is offline
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Location: Columbia SC
 
Join Date: Feb 2013
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Mein Auto: 1991 318is w/ M50 Engine
Thanks for the quick replies!

Yup, it definitely looks like an m42 radiator.
It also looks like most of the ac components weren't carried over with the swap, missing the condenser and compressor.

I'm about to go out and see if the aux fan turns on...
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  #5  
Old 02-06-2013, 01:23 AM
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BMWFatherFigure BMWFatherFigure is offline
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Mein Auto: E23;E30;E38;E32;E34 +
Post the results of the fan tests.
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  #6  
Old 02-06-2013, 03:32 PM
austenjm90 austenjm90 is offline
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Location: Columbia SC
 
Join Date: Feb 2013
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Mein Auto: 1991 318is w/ M50 Engine
Aux fan turns on with the ac, I'll probably wire a manual switch to that.
After looking I'm not sure if its an m42 radiator or not. It barely fits in the car and is currently not attached to anything. Where it's at now there really isn't room between the engine and radiator to put a fan.
I might be headed to a junkyard this weekend, hopefully I can find parts to mount the radiator.
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  #7  
Old 02-06-2013, 05:29 PM
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BMWFatherFigure BMWFatherFigure is offline
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Mein Auto: E23;E30;E38;E32;E34 +
Depending on the weather, the fan you got running will keep you mobile in the short term.
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Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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