Question about 1996 Mercury Sable

2 Answers

Po402 Car putting bad gas mileage

Posted by on

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Mercury Master
  • 5,520 Answers

You need to clean the carbon out of the passages to the EGR valve. This will involve removing the airhorn and cleaning the EGR ports. You may need to clean the inlet valve on the EGR s well. Make sure , if using a decarbonizing chemical, that none gets to the egr diaphragm nd dissolves it.

Posted on Mar 25, 2014

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Mercury Master
  • 22,111 Answers

What do you mean?

Posted on Mar 25, 2014

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

WHY DO I GET SUCH POOR GAS MILAGE ON MY CAR


A vehicle like that won't give a poor gas milage for nothing. The dealer just don't want o deal with you. I own a 2009 Nissan Versa, which is one of the best gas milage car you can get, but right now is spending way too much gas. In my case the problem is the spark plug and the air filter, and it should be good to go. Have it diagnostic. Good luck.

Jan 29, 2015 | Honda Cars & Trucks

1 Answer

Burning gas


oxygen sensor faulty, engine out of time, crank or camshaft sensor.

Bad Gas Mileage Causes:
  • Having bad oxygen sensors and air filters can reduce your gas mileage by up to 20%. The oxygen sensors help keep the proper mixture of air and fuel, and having this off balance can be inefficient. The air filters can get clogged and simply need to be unclogged to fix the problem. Air filters need to be cleaned so that the engine can work at its peak performance.
  • Your spark plugs are responsible for sparking combustion in your engine. If they misfire, or are working poorly, this can effect your gas mileage in a negative way.
  • Having bad fuel injectors can cause bad mileage. This is because the fuel injectors are responsible for putting fuel into the engine. If there is a leak of some sort, then less fuel will make it to the engine, and then in turn make it run less efficiently.
  • Having your air conditioner on causes a lot of gas to be wasted in powering the system. If you can, turn off the air conditioner, and ride with your windows open. At higher speed, close the windows though to reduce drag.
  • A common cause of bad mileage is your own driving habits. If you are an aggressive driver, likely you accelerate to quickly. This causes more fuel to be used, and will use up more gas than you need. Same goes for revving your engine. It may sound cool, but it uses up gas for going nowhere.
  • Many people waste gas by idling. Idling is when you have your engine on, but you are parked and not moving. Common places where this occurs is when you are trying to warm up your car in the winter, or while you are waiting to pick someone up. Your car really doesn't need more than 30 seconds to warm up the engine. When it comes to waiting for someone, turn your car off or put it into neutral. Since you aren't moving, you might as well save gas and the environment.
  • The type of motor oil that you are using can also affect your gas mileage up to 12%. You want to use motor oils that are high in reducing friction. Either use asynthetic oil or the oil that the car's manual recommends.
  • The more revolutions per minute you make your engine do, the more gas you will use. The easy way to combat this is to just drive slower. Driving the speed limit of 55 miles per hour is much more fuel efficient than driving at 60, 65, 70, etc miles per hour.

Dec 17, 2013 | 1999 Buick Century

1 Answer

2002 DODGE STRATUS WITH BAD GAS MILEAGE


could very well be. alot of cars the light wont come on if the o2 sensor is bad. bad o2 can cause car to use alot of gas. may be more than one sensor.

Aug 12, 2012 | 2002 Dodge Stratus

1 Answer

Escort using tomuch gas


Is your check engine light on? Your escort is what is called an "OBD Compatible" vehicle. Any problem that would cause it to use way too much gas SHOULD be setting fault codes in your onboard computer system.

The next question is have you actually checked fuel mileage? If so, how much mileage are you getting?

The reason I ask is because some people do not understand fuel mileage. I had a lady bring her car in just a couple weeks ago saying that her car was getting "horrible fuel mileage". I checked it out and could not find anything wrong. When I questioned her about it, she said "I used to put $9.00 in it and it would last me all week. Now I am having to put $16.00 in it. I still drive the same way to work, and do not use my car for anything else." I had to explain to her that there was nothing I could do to the car that would fix the price at the pump. Fuel mileage is measured in miles per gallon, NOT miles per dollar.

Also, are you sure it is getting bad fuel mileage? Or are you maybe driving more miles than you used to?

If it is in fact getting bad gas mileage and the check engine light is not on, then the question would be: What kind of condition are your tires in? 50% of all the people I have coming into my shop complaining about bad fuel mileage are running around with tires that are badly worn and/or underinflated. In this case, the best money you could spend would be for a tire pressure gauge and maybe one of those portable air compressors that plug into your cigarette lighter. You can usually purchase a decent compressor for under $30. That way you can check your tires and inflate them yourself on the days when you are not working. Your tire pressures should be checked at least every two weeks.

Just some things to think about....

Jan 25, 2012 | 1997 Ford Escort

1 Answer

Just bought ford fiesta finesse 16 valve 03 1.2 am doing roughly 21mpg no leaks or drips this is round town and on motor way have not taken it above 65


Hi


As far as the review says the mileage should not falter since it is new as you said. However

These are the causes of a poor mileage in a car:-


Poorly Inflated Car Tires

Car tires that are improperly inflated create significant road resistance and drag on a moving car. A car engine has to work harder to propel a car forward due to this increased tire/road resistance. This resistance chips away at a car's gas mileage.


Dirty Air Filter

A dirty air filter impedes air flow into a car's engine, a process that disrupts normal engine combustion and makes it less efficient. This causes a reduction in both engine performance and gas mileage.


Bad Spark Plugs

Spark plugs are responsible for igniting a car's air/fuel mixture, an event that causes a mini explosion inside a car's engine cylinders. Bad or dysfunctional spark plugs don't fire, or ignite, properly; thus, they affect engine combustion negatively, which in turn negatively affects gas mileage.


Bad Oxygen Sensors

For a car to be at its most fuel efficient, its oxygen sensors, small and electronically operated, automatically adjust a car's air/fuel mixture and have to be functioning properly. Bad oxygen sensors cause abnormal air/fuel mixture ratios, a condition that results in poor gas mileage and poor vehicle performance.


Leaky Fuel Injectors

A car's fuel injection system is responsible for injecting precise amounts of fuel into a car's engine cylinders, where it is combined with air and ignited. For a car to perform properly, a specific amount of fuel has to be injected by each fuel injector into each engine cylinder. A leaky fuel injector wastes fuel by leaking it outside the engine and reducing the amount of fuel that makes it into the engine. This results in wasted fuel and reduced gas mileage.
It is suggested to start with a code scanner to find out if there are any stored fault codes in your car.

Also check this link for some helpful tips:-


http://www.wikihow.com/Increase-Fuel-Mileage-on-a-Car


Please get back to us if you have further query else please accept the suggestion.
Thank you for contacting fixya.com

Jul 18, 2011 | Ford Fiesta Cars & Trucks

2 Answers

I gotta 1997 toyota avalon its running rough i ran a scanner it threw two codes po441 an po402. i need help figuring out wat these codes are


Hi there osborne_shay,

Those codes refer to a problem with the drive train in your Avalon. Here is what the codes mean.


PO441-Evaporated Emission Control System / Incorrect Purge Flow
PO402-Excessive gas flow through the EGR valve

The cause for these issues are either that the components are faulty or they just need to be cleaned.

Mar 31, 2011 | Toyota Avalon Cars & Trucks

1 Answer

Just had a new fuel pump, fuel filter, spark plugs and coil pack put in, was getting 27miles to the gal, now I am getting 15!!!


possible problem is that you did not put ac delco plugs in the vehicle and now you are getting bad gas mileage.gmc vehicles only require that you put ac delco spark plugs any other type and you get bad gas mileage or poor performance

Feb 12, 2011 | 2003 Oldsmobile Alero

2 Answers

Bad gas mileage i filled my car with 91 octane i live in canada its $1.20 a liter right now and i got 274 kilometers to that tank is there something wrong with my car ?


If your car is at 80k miles or more, first change out the oxygen sensor. Their life-span is only 80-100K miles. (not sure what that is in KMs.

This is what provides feedback to the computer to fine-tune the air/fuel mixture. When this fails, you will run a rich mixture and get worse gas mileage (or literage as you might say)

Aug 03, 2010 | 1997 Ford Taurus

1 Answer

Obd2 codes


po402 is egr flow excessive, remove and clean carbon out of valve. or replace it.

Jan 28, 2009 | 2002 Nissan Frontier Crew Cab

Not finding what you are looking for?
1996 Mercury Sable Logo

47 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

fordexpert

Level 3 Expert

5520 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

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

Answer questions

Manuals & User Guides

Loading...