Question about 2003 Chevrolet S-10

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Poor gas mileage on 2001 S10 4x4 4.3 new filter rotor and cap

Also added injecter cleaner Truck has 60000 miles on. Mileage has been dropping last few months to less than 15 mpg. Converter feels loose like it has a high stall speed. Going to work in the am at 65 miles an hour, the tach is on 2400 untill about 3 miles and drops to 2100

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  • Anonymous Mar 30, 2014

    very poor MPG fuel ratings

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  • 22 Answers

Sounds like one of the shift silinoids in the trans is on it way out i had the same problem a few years ago

Posted on Dec 03, 2008

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1 Answer

Poor gas milage


Poor gas mileage can have many roots but the best way is always to start with the ignition system. Have a look at the sparkplugs, if you've got the I6 4.0 engine it is easy to check them. Spark plugs are cheap and easy to replace. Also check the spark plug wires, be sure the connections are tight and free from rust. Check the distributor cap and rotor and if they are rusty/greasy clean them up. After you've cleaned and checked the ignition items (spark plugs, wires, distributor cap and rotor) you can move on to the fuel injection system.
Replace the air filter, it is cheap and most people overlook that single item.

When was the last time you replaced the fuel filter? A clogged fuel filter reduces power drastically which in turn affects fuel mileage.

Jan 27, 2010 | 1994 Jeep Grand Cherokee

1 Answer

98 5.7 that "studders" under accelerating. new filter, new cap and rotor, 100,000 done 15,000 ago. Seemed to run fine after injector cleaner, but that lasted about 5 tanks of gas. Problem returned even...


Look inside the throttle body with a flashlight. If the intake manifold looks wet or is cleaned off inside, then the SFI fuel injectors are leaking. This will cause poor performance and poor fuel economy. If this is the problem, have the injectors replaced with an upgraded MFI assembly.
Also you did'nt mention spark plugs, check/replace if you have not already.

Dec 13, 2009 | 1997 Chevrolet K1500

3 Answers

2002 ford focus is geting poor gas milage


Tune Time.
1)new spark plugs properly gapped.
2)new air filter (check every 35000 miles)
3)new fuel filter (every 35000 miles)
4)1 bottle of STP fuel treatment (red bottle) 4x a year.
5) oil and filter change (castrol or another good quality oil every 3-4000 miles.
6)proper air pressure in tires (check every 2 months
7) service transmission every 40000 miles or less.

New oil and filter
8) new plug wires every 80000 miles.

Nov 07, 2009 | 2001 Ford Focus

3 Answers

Trying find out how to get better milage out of my 2001 5.9 ram pickup. it seems to be get worse. have new plugs coil wires cap rotor airfilter


Dont forget the fuel filter. An other thing you can do is have the catalitic converter replaced with a High Flow type.And there is always true duel exhaust.

Aug 29, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

POOR GAS MILEAGE


Have you changed the fuel filter? I know it sounds weird but a plugged filter will make a truck use more gas. The computer tries to compensate for less fuel by commanding the injectors to open longer. Also a plugged filter will cause excess back pressure on the fuel pump making it loud.. Good Luck.

May 29, 2009 | 2001 GMC Sonoma Extended Cab

1 Answer

Poor fuel mileage


what kind of exhaust do you got, the converter actually may help get better mileage. scan egr for errors in emmisions, get the timing checked mabe running rich, check pcv valves,test knock sensor, 02 sensor( scan might not pick up) lemme know how it goes

Mar 02, 2009 | 1996 GMC Sierra

1 Answer

Location of the PVC and gas filter on 4 cylinder 2003 Solara


The PCV and the fuel filter replacements are not going to increase you fuel mileage. What you should really consider is getting some good fuel injection cleaner into the tank, and get an "induction system cleaning". Those two items alone will address most of your mileage issues. The PCV does nothing for mileage, nor does the fuel filter. Also, for maximum fuel mileage, you should have the correct sparkplugs from Toyota in your car. "Aftermarket" plugs doe not perform very well at all.

Jan 10, 2009 | 2003 Toyota Camry Solara

1 Answer

Jeep liberty gas mileage


when was the last time you put in fuel injector cleaner? I put in Lucas Oil Injector cleaner every other or every oil change.

There are alot of factors affecting your gas mileage. Tire wear, tire pressure, wheel alignment, air filter, fuel filter, spark plugs, oxygen sensors, just to name a few. So to say what you need is just shooting in the dark without more information. I would probably start with your oxygen sensors, and then perform a tuneup. If your vehicle pulls to one side or the other when driving on the highway you need to stop into the shop for a wheel alignment.

Nov 24, 2008 | 2005 Jeep Liberty

2 Answers

Jeep liberty gas mileage


to increase gas mileage make sure you keep on top of tire air pressure you can also have your tires filled with nitrogen instead of air also a K&N air filter does wonders and is good for lifetime worth every penny. another smart move is to use a fuel system cleaner regularly Lucas makes great products for this try local parts store.

Nov 24, 2008 | 2005 Jeep Liberty

1 Answer

Gas consumption


My Answer:

Poor gas mileage can be a result of many many things.

First of all you need to find out what is the factory normal gas mileage for your model year Jeep SUV. It should have said on your window sticker if you bought it brand new. If you are a 2nd or 3rd owner then a Jeep dealer would have info. Google search will tell you as well, and only takes a couple minutes to find.

I did a quick Google search and for a 2003 Jeep Grand Cherokee with a (4.7L V8 engine) the average mileage is roughly 14 mpg.

Not sure what engine you have as to options, etc?

How you drive will greatly change that number up or down depending on a number of driving and driver variables.

A few being -

Driving habits?

Tire pressures?

Engine tuned up?

Lube & oil/filter changes (every 5,000-7,500 miles? Air filter changes (every 10,000-15,000 miles)? Read your auto manual for exact recommended intervals.

How many people in the SUV on average?

Are you towing anything?

Type gas you are burning - BRAND? (See injectors below)

Area you are driving in (hills and valleys verses flat out,
etc)

Jeeps in general don't have a good track record for great mileage, and rough engine idling is always a clue that your fuel injectors are dirty. Typical on all Jeeps with port fuel injection systems! On Jeeps with dirty fuel injectors your mileage will go way down accordingly. If your not putting at least a 12 oz bottle of say Walmart brand Super Tech Fuel Injector Cleaner (~ $1 each) in your gas tank religiously every logged 1000 miles, or every 2 tank fill ups, then you are just inviting dirty fuel injectors and POOR fuel economy!

My 1993 Ford XPLR with a 4L V-6 engine (and ~ 160,000 flawless driven miles) gets roughly 22 miles per gallon on the highway with cruise control on, and about 17 around town on average. I religiously put a 12 oz bottle of the above injector cleaner in my gas tank every 1000 miles!! Of course I do all my own tune-ups, general repairs, and suspension maintenance (shocks, O2 sensors, trans oil changes, lube & oil/filter changes, code reading and clearing, etc) myself and it shows! I don't trust repair shops except for say Tires and Balancing at SEARS.

Hope that helps ease your mind about gas mileage as it relates to your Jeep there.

Frank


Aug 01, 2008 | 2003 Jeep Grand Cherokee

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