Question about 1997 Chevrolet Blazer

1 Answer

A guy told the wife that we could make our1997 4.3 4x4 blazers gas mileage go from 15 to 25- 30 mpg by disconecting the 4x4,he even showed her where,but shes a true blonde and forgot,all she knows is that it was under the hood,it sounds like a vacuum line or a pump,is this really possible,if so where would this be,or do you think this guy was just trying to get his hands under the old-ladys HOOD?

Posted by on

  • yadayada
    yadayada May 28, 2010

    he is full of it.

  • wskssmy May 29, 2010

    I figured that he was full of it,because if your going to get 10 to 15 more miles per gallon then everybody would be disconeting there 4wl.drives every summer,he got the old-lady all excited, he probaly was trying to see if she had a hubby(ME) some people are dog's,hopefully we'll run into him again and i'll have him show me what to do and i'll tell him an expert said he's full of it!!!maybe i'll even disconect his vacuum line,especially if he doesn't show me anything,because now the wife just said the guy said your husband should know what to do,thank you,glad you responded so quick AND the wife totally understood your explaination



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 3,006 Answers

Disconnecting the 4x4 will lead to a small improvement but not as dramatic as has been suggested. All that is achieved using the idea mentioned is to prevent the driver from selecting 4WD.

It won't make any greater difference than by just leaving the vehicle in 2WD via the usual transmission controls: you'll still have the additional mechanical weight to lug around, the additional frictional and aerodynamic drag of the unused mechanism and on some surfaces the inability to engage 4WD will actually increase fuel consumption.

Total removal of the additional components to permanently convert to 2WD plus smaller wheels and tyres, a smaller capacity engine and a lowered suspension will make a real difference but will be far more expensive than simply buying a proper 2WD vehicle with a smaller engine. You'd also ruin the resale value of your Blazer. Don't forget that if you drop all the gas guzzling extras, you won't need a larger engine to haul it everywhere to start with, so your best bet is to just trade in for a road going vehicle with the interior room that you need.

You'll also make a large saving in fuel by driving appropriately, maintaining correct tyre type (road tyres for road use, mud and snow tyres for the mucky stuff) and correct tyre pressures and not permanently carrying around heavy loads, roof racks or roof boxes unless absolutely necessary. Regular vehicle servicing can also make a large difference to mpg.

Posted on May 28, 2010

Testimonial: "THANK YOU VERY MUCH,like i told her the day he told her,if it was true then why didn't anyone else do this!!I figured he was just trying to see if she had a hubby(ME),now she just said if you forget what to do,your husband SHOULD know what to do?Hopefully we run into him someday,cuz i REALLY know what i'm going to do, i'm going to have him show me,and if wherever he points out isn't related to the,he won't have to worry about gas mileage for a while,cuz it's kinda hard to drive with your eyes swollen shut,LOL,thanks for responding,we love our blazer the way it is,and we use it for pulling our camper,the old-lady is a penny-pincher,thats how this all came about,i'm going to write your name down for the future and for friends,i thought your answer was very professional,even the wife understood it,I THINK!"

  • Obertelli
    Obertelli May 29, 2010

    Happy to have been of assistance! Thanks for the testimonial :-)

    BTW: You may also see various "fuel saving" gadgets for sale which claim to use magnetism, catalyst covered pellets or multiple spark generators to improve mpg. All are usually backed up by testimonials, pseudo-scientific claims and are usually cleverly worded to avoid actually claiming they do anything at all when you examine the wording. Avoid them: they're all snake oil and you can be certain that manufacturers and legislators would have mandated their use long ago if they really worked.

    I have to be aware of how to cut consumption as where I live in the UK we have some of the world's highest fuel prices. Currently it's £1.22 per litre and when you convert that to US Gallons it works out at $6.68 per gallon. Recently it was as high as $7.23. Ouch! I love how cheap gasoline costs when I visit the USA.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Low gas mileage city and hiway @ 4-5 MPG below MSRP sticker data of 15 and 21MPG on a NEW 2013 Silverado. 2000 miles on odometer and mileage not improving.

is this calculated mileage or what the estimated mileage is showing on the dash. Have you checked to see what you get on just the freeway?

What are your driving habits like?

How is your tire pressure?

Do you make a lot of short trips?

Apr 11, 2013 | Cars & Trucks

1 Answer

Losses power going up hills poor gas milage

s-10 blazer getting very poor gas mileage 14 mpg is there any way to improve this ?

Dec 06, 2011 | 2002 Chevrolet Blazer

2 Answers

Buick regal 92 3.8L Horrible fuel mileage

Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Mar 16, 2010 | 1992 Buick Regal

1 Answer

What kind of gas mileage does a 1999 chevy blazer get

Depends...4wd will get about 14 MPG. The RWD Base gets about 16 MPG and the LS gets 17 MPG.

Mar 04, 2010 | 1998 Chevrolet Blazer

1 Answer

Hi, my Blazers is only getting about 8 MPG around town, just started recently. Other than that it runs fine

when the weather gets cold fuel mileage and power suffers due to idle time to warm the vehicle and also the fuel is mixed(blended) for the winter months one way to offset this is to use a block heater when parked for an extended amount of time,also use a higher octane gas,or even try a fuel/octane booster with injector cleaner and line antifreeze.hope this shed a bit of light on your problems good luck.

Jan 09, 2010 | 2000 Chevrolet Blazer

1 Answer

Please tell me the fuel capacity and expected mileage

fuel tank is 20 gallons, this means you can get about 18.5 gallons in the tank in the real world, the fuel mileage is about 10-12 MPG in town and 14-16 MPG on the hiway, the assumes it is a 4 wheel drive, they are heavier.

Nov 01, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Poor Gas Mileage

its on the fire wall yes it will help some i wouldnt expect a drastic change in fuel economy because acura dosent have a replacement schedule for fuel filters like most car companies. id check your air filter and if your check engine light is on it will seriously kill your mpg. hope this helps

Oct 01, 2009 | 1998 Acura CL

1 Answer

Gas Mileage/Tank on 1992 S-10 Blazer

I am finding that you have a 20.0 gallon fuel tank....2 or 4 dorr....doesn't matter.

Please don't forget to rate.

May 13, 2009 | 1992 Chevrolet S-10 Blazer

1 Answer

Poor Fuel Mileage 2006 Hyundai Sonata 2.4 motor

I don't know from where you bought the car but do you feel certain that typical causes such as fouled plugs or clogged air filters are not at fault?
Most dealers, even the shlocks don't normally skimp on the simple stuff but who knows about a private source?
That does seem low, especially the city numbers. I don't think Hyundai is any leader in gas mileage but they are better than what you are getting.  

Dec 24, 2008 | 2006 Hyundai Sonata

Not finding what you are looking for?
1997 Chevrolet Blazer Logo

133 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

78919 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides