Do I need a fan shroud ?

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i just put one on my car and it stopped me from overheating at idle...

if it cools at speed and not at idle your not pulling enuff air thru the rad at idle...

a shroud will make sure the air comes from the entire radiator, and that it will not " short cycle" - and pull air around the rad and not thru it... ( path of least resistance )
 
Also make sure that the rubber strip that goes on the underside of the hood that seals to the top of the radiator core support is there too.
 
Plus they help prevent getting your fingers into a spinning fan! Don't ask ;\
 
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