Question about 2003 Pontiac Grand Prix

2 Answers

NOT GETTING GOOD GAS MILEAGE - 2003 Pontiac Grand Prix

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,201 Answers

If you haven't had a recent tune up done, it should be done.
Change the plugs, maybe plug wires,
fuel filter
air filter, that should help a little.

Posted on Jul 31, 2009

  • 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.

  • Master
  • 5,081 Answers

Here are a couple of different problems that will cause bad fuel mileage. first is air filter, still getting low mpg. then the pcv valve. clean fuel system. the cost of filter about $20 pcv was $12 and the fuel system cleaning and pcv is easy to do. when cleaning the fuel system,clean the injectors the fuel rail and the throttle body be sure that you have them change the oil or that you do it after they work on it. Notice whether the oil smelled like fuel then your engine needs platinum plugs for best spark they can run as much as $8 each.

Posted on Jul 31, 2009

3 Suggested Answers

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

landsend
  • 1066 Answers

SOURCE: Truck does not get good gas mileage

check your thermostat and the engine cooant sensor.

Posted on Mar 15, 2009

  • 7 Answers

SOURCE: not getting good gas mileage var has 50,000 on it

also, have the fuel filter replaced.

Posted on Feb 12, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Gas milage


What are you getting now? Engine size, and mileage? What have you tried so far?

Apr 23, 2013 | 2002 Chrysler PT Cruiser

1 Answer

Shouldn't a 2.0 liter engine be getting better gas Mileage than a 2.4 liter engine?


The size of the engine alone will not determine gas mileage. There are many other factors including vehicle weight, design of the motor, etc. So in answer to question 1, size isn't going to matter.

For question #2, make sure you change the oil, oil filter, air filter and keep the tires inflated to recommended specs. That might help you out a bit...

If you want to know more about you can visit :

May 09, 2012 | Cars & Trucks

1 Answer

I have a 1998 buick regal it has been recently tuned up was getting very good gas mileage and runnin well now it is burning more gasoline...no change in performance and no engine light codes


Good gas mileage on this car should be 19City 27Hwy. Gas mileage can be affected by many things. Assuming that the car has been recently tuned as you have indicated, I would: Check tire pressure first<-you'd be surprised what low tire pressure can do. Check for low oil level <-engine friction Cheap spark plugs. Let me know.

Jan 12, 2011 | 1998 Buick Regal

1 Answer

I had a tune up and now my 2001 century buick is not getting the gas mileage i am getting 2000 miles to a tank when i used to get 300 to 350


Have you changed your gas station? I am not getting good fuel mileage when I fuel at cheaper gas stations. Try Exxon or BP and see if that changes anything.

Dec 30, 2010 | 2001 Buick Century

1 Answer

Does the fuel filter affect gas mileage


there are lots of things that can affect gas mileage. if the spark plugs and wires are worn out, the air filter being dirty, dirty fuel filter, proper inflation of the tires, O2 sensors that are contaminated and performing poorly. the first thing to do would be that the engine is in good working order, as in no check engine light, no misfire, etc. a poorly running engine will put out terrible gas mileage. then you can start with the things i listed.

Feb 21, 2010 | 2002 Chrysler 300M

1 Answer

Losing gas mileage, how to solve.


Take it to Autozone or Oreillys for a free scan. Several parts like a Throttle Position Sensor or Oxygen sensors can greatly affect mileage.

If its not those parts a good solvent cleaner for the injectors can help. The gas you use can be a big factor. I bought some Walmart gas and dropped 1/3 of my normal mileage, vehicle ran like a slug.

Check your brakes for dragging, you could have sticking calipers. Try the usual cures, clean oil, clean air, tires at proper PSI.

Jan 01, 2010 | Ford F-150 Cars & Trucks

2 Answers

I want to know how much good is my gas mileage on my 1998 malibu LS


I have a 2000 malibu ls, and it gets about 27 in city to about 32-34 on open highway.

Nov 14, 2009 | 1998 Chevrolet Malibu

2 Answers

Truck does not get good gas mileage


check your thermostat and the engine cooant sensor.

Mar 15, 2009 | 1996 Toyota Tacoma

Not finding what you are looking for?
2003 Pontiac Grand Prix Logo

185 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8123 Answers

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

Answer questions

Manuals & User Guides

Loading...