Hood Open or Closed??
Posting Guru
Joined: Aug 2006
Posts: 1,199
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From: High Point, NC
I can remember when I was a paramedic, we use to get the hoods louvered to increase circulation around the engines. But we were also running 0-80 as fast as we could and had 2 alternators, 2 A/C compressors and a lot of electronics, plus when we stopped we had a hi-idle switch to runt he RPMs to about 2k to keep everything going. Overheating was a problem for us.
The cops and other support vehicles would also pop the hoods when at a scene for long periods to help reduce the heat.
I can't tell you how many times I've emergeny vehicles over heat... but that was back about 15 years ago. I think mfg's have done better jobs with cooling systems now, so I don't think its as necessary as before.
I have, when sitting in stop-go traffic with >100* temps popped the hood on my X, but that's just the old school in me - I don't think it really makes a difference.
The cops and other support vehicles would also pop the hoods when at a scene for long periods to help reduce the heat.
I can't tell you how many times I've emergeny vehicles over heat... but that was back about 15 years ago. I think mfg's have done better jobs with cooling systems now, so I don't think its as necessary as before.
I have, when sitting in stop-go traffic with >100* temps popped the hood on my X, but that's just the old school in me - I don't think it really makes a difference.
Senior User
Joined: Jul 2005
Posts: 353
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I don't think opening the hood after turning off the truck is helping or hurting anything. If you are really conserned then you should install a turbo timer. It will allow you to idle the truck for 1-5 minuets after you remove the key. Idling will keep the fan, water pump, and oil pump (and transfluid pump if you swing that way) going while the coolant and oil cools down.
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