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Whats the advantage of a cold air intake on a 2002 Chevrolet Silverado 1500 5.3L

I have a 2002 Chevrolet Silverado 1500 5.3L I'm thinking about installing a cold air intake but I wanna know what the ups and downs are on having 1 and I'm also thinking about installing an electric fan and doing away with the mechanical fan I'm looking for fuel Mileage not performance

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  • Terry Stu
    Terry Stu May 08, 2014

    This is actually a physics question, but I'll keep it simple. Cold air is denser. Once it enters inside the engine, it expands more than if the same volume was warmer. This equates to more power AND better economy. If you had an old carbureted truck, it would take a longer time to warm up and run good, but with your 02 with computerized injection...there really is no down side

  • George Davis May 08, 2014

    Ok kool deal but how about if I get rid of my mechanical fan and replace it with an electric fan is there any ups or downs about that I know somet race cars they say the less pulleys the more the power but if i'm to eliminate the strength of the mechanical fan with the clutch fan spring will that help me in in fuel mileage or what will the out come be if I do that

  • rexking2 May 09, 2014

    yes it will help in both aspects...anytime you lessen the work of the motor it will be more efficient

  • George Davis May 09, 2014

    Kool deal that's what I thought would be the out come but wasn't 100% sure on what the out come would be never really looked for fuel mileage before also I seen last night I can get a electric water pump for it never even thought of 1 before but would it be worth my wild to give it a try or would it be more of a issue in the long run



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Installing a cold air intake kit like a K&N or Airaid will actually do both, give you a horsepower gain and better fuel mileage. you will notice better throttle response and you will not need to give it as much throttle to go the same speed as before and therefore you should see an increase in gas mileage(if you dont go hotrodding around!).

Posted on May 08, 2014

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  • George Davis May 08, 2014

    any other tips on things to do or not to do to help with fuel mileage so far I have upgraded my exhaust to a dual exhaust and noticed a change in my mileage I'm thinking eliminate my mechanical fan and replace it with an electric fan will that help any or what will the out come be

  • khodges3 May 08, 2014

    For the cost and labor of replacing your mechanical fan with an electric fan, I dont think in the end it would be worth it. you wont see much of a mileage increase by doing that on a 5.3 L v8 engine

  • George Davis May 09, 2014

    I will be doing all the work myself I dnt like other ppl messing with my vehicles my fan actually cost less than the cold air intake I'm just seeking advice and ideas thank you very much for the info you have provided me with it has been very helpful



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Posted on Jan 02, 2017

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SOURCE: I want better gas mileage.

It's True. On my diesel it makes about a 3 miles/gal. difference. It probably wouldn't be as much on a gas. Maybe about 1 or two mpg if you take it easy, but you will love the power increase (up to 30hp+), which will make it hard to take it easy. It will also give you firmer shifts. You can get programmers/chips on EBAY or possibly at a local performance shop. The programmers just plug under the dash and once the desired program is installed then you can unplug til you wanna change it. They cost anywhere from 300 to 800 bucks depending on the brand or features. I would recommend Superchips, Bully Dog or Edge. Hope this helps.

Posted on Dec 15, 2008

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SOURCE: 1999 Chevrolet Silverado 1500 Fuel Pump

check the connector to the fuel pump for corrosion or loose pins, the fuel pumps of newer cars and trucks are designed to last at least 100,000 miles, when the new pumps quit did u verify they had power to them?

Posted on Mar 09, 2009

michigan man
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SOURCE: cold air intake for a mazda rx7

try to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

Posted on Mar 20, 2009

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SOURCE: Replace fuel rail

check fuel inlet and return lines for leaks.also check for leaks at fuel pressure regulator and fuel injectors.

Posted on Dec 13, 2009

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SOURCE: i have a 2003 Chevrolet Silverado with 140k miles.

Multiple misfires and timing over retarded can be a result of the MAF dirty or failing. I would suggest carefully cleaning it with a good carb cleaner (Berrymans Chemtool), erasing codes, then take for a drive. If that doesn't do it, get a new one.
It's a "throw parts at it" technique, but a new MAF is much cheaper than a timing chain, and timing chains are not as problematic as MAF's. Plus, the computer tries to compensate for a failing MAF by changing timing. And a MAF will cause engine misfires because it is not measuring the air flow correctly.

Posted on Dec 13, 2009

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about the only thing that will gain ya any fuel mileage is the cold air intake, as for how much ck the mfg package they ought to know how much , the other two ideas won't do ya no good just move the load from fan belt to alternator thats run from same belt , unless your planning to line your roof line in aerodynamic shape solar panels to run them, Now that might work ,but nevers been done that i know of so i have no data on mileage gain for that one

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If its a CAI, well youre kinda stuck, you need to get a chip and reprogram the computer. If it is because of an oiled air filter, it means you used too much oil, use less next time. You will need to find and clean your mass air flow sensor.
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After fighting with mine (2003 GMC 5.3 liter), I believe I have it solved. Mine was throwing P0171 and P0174. Also, there was an occasional p0101. I had a rough idle sometimes right when I started it, but usually after 5 minutes when the fuel system went in to closed loop mode (about 200 RPM swings at idle that slowly went away). Days below 10 degrees were much worse.

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