HOT engine area

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Oct 6, 2008 | 11:53 AM

chaneyjh

Thread Starter

New User

Joined: Oct 2008

Posts: 4

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HOT engine area

Have acouple questions the first being does anyone have any ideas how to cool the engine bay area more than it is cause sometimes it is super hot when i open it i just got done replacing my alt and battery as they killed each other. And does anyone know where i could find an AC Manifold tube for this truck as the dealership told me that is why AC system does not work. i could replace it here on the base i just need to find the part and then figure out how to replace it after i vent the system at the base Autohobby shop. any ideas i would appreciate it trying to get it done before next spring and ford wants $400 to do it without a recharge. Any help would be appreciated.
thanks
Jon

Oct 6, 2008 | 02:02 PM

JaySVX

Fleet Mechanic

Joined: Feb 2008

Posts: 1,955

Likes: 6

From: Eastern PA

A recharge is about $20, buy a can, and charge.

Depends on what line you are looking for. THere's the high pressure line, low pressure line, line from the pump to the condenser, and so forth. Overall, it'd probably be almost the same cost to have the dealership do it once, and do it right, as trial and error gets expensive rather quickly with stuff like that. Also, they can properly vacuum the system, which should be done if you break the seal on the AC system. It's more than just replacing a hose.

If you can get more details it'll be easier to make suggestions though.

Under the hood is supposed to be hot after the engine is running. It is making fire in there after all.

Oct 6, 2008 | 02:57 PM

chaneyjh

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Joined: Oct 2008

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There is hott then after 45 minutes of not running it is just as hot under that hood i understand that there is fire in the engine but i also understand there are ways to eleviate some of that heat from the electronic items in there that is what i'm trying to get ideas for and the cooler the air around the intake/airfilter areas the better my MPG/HP will be so it is a win win situation.

Oct 7, 2008 | 06:26 AM

davisenvy

Senior User

Joined: Jan 2005

Posts: 196

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From: Franklin, NC

Do you understand a complete sentence? Wrap your engine in a thermal blanket. Are you after your AC getting cooler or the engine. What engine? What year?

Oct 7, 2008 | 06:47 AM

chaneyjh

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Joined: Oct 2008

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The engine is the 5.4 the year is 2003. As for what i am trying to cool it is the engine so that there is cooler air in the area around the intake and Air filter. these are all just questions. if you cant give a simple answer then dont leave a ****** reply as all it does is **** off the guy askin the simple question.
thanks
Jon

Oct 7, 2008 | 08:58 AM

alloro

Fleet Owner

Joined: Apr 2008

Posts: 24,318

Likes: 5,128

From: 0,0,1

Short of installing an electric fan under the hood, or cutting some nice vents into the hood, there isn't much else you can do.

Oct 7, 2008 | 05:16 PM

cbradford

Fleet Owner

Joined: Dec 2006

Posts: 20,634

Likes: 37

From: Lost in Pa.

You could install a cowl Induction Hood.

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Oct 7, 2008 | 09:22 PM

heymrdj

Posting Guru

Joined: Aug 2007

Posts: 1,079

Likes: 2

From: Fort Wayne, IN

You don't want the engine bay to be cool. The Expedition has a sort of CAI (Cold Air Induction) that's already been proven by many members of this forum to be about as good as it can get, the air entering the engine itself is at ambient (surrounding temps). The engine bay itself is insulated. You want this truck engine to be at it's peak operating temperature, which off the top of my head I believe is 220 degrees on the heads, which yes, feels very hot. So don't screw with it, you won't do yourself any good, just waste your time. As long as your temp needle is in the middle as it's operating, you're good to go. Engines are thermal operators, they rely on heat to make motion. You don't want to burn gas to produce 800 degree temps, then use a coolant system to get that down to 70 degrees. You want every bit of that heat possible without melting something. In fact our current internal combustion restraints in efficiency is the materials we use, we could use much more of the energy available in gas if we could use block materials that could withstand 1,000 degree plus engine temps. The more usable heat, the better.