Question about 2000 Pontiac Grand Prix

1 Answer

Could my MAP sensor be faulty? My gas mileage has gone down to 10 mpg since I moved to Florida?

Posted by on

  • cindy_irwin Jun 29, 2009

    Thanks. Taking it in to be diagnosed, mechanic said it could be all of the above.

×

1 Answer

  • 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.

  • Pontiac Master
  • 14,036 Answers

Replace air filter .change spark plugs and wires.transmission slipping .check tranny fluid.if you got manual transmission.clutch could be slipping.low tire pressure.brake could be dragging.high speed driving and a lot short runs.stopping and going burn a lot of gas.scan it to check oxygen sensor.it will cause fuel consumption.

Posted on Jun 27, 2009

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

2010 5.7 liter. Does the dealer have to adjust anything to improve gas mileage?


to get an an out of paramaters setting for the air fuel mixture in the ECM I would consider a change in altitude of around 3000 feet would be necessary before the ECM would need re- programming
I would suggest that you run the fault codes as the MAP/BARO sensors may be faulty
also if the driving conditions have change ( flat to hilly) will account for lower fuel economy

Nov 24, 2015 | Dodge Ram Cars & Trucks

1 Answer

2000 Ford Expedition- used to get 18 mpg now all of sudden down to 12 mpg - what gives?


replace your air filter and spark plugs. clean maf or map sensor

Jun 02, 2017 | 2000 Ford Expedition

1 Answer

Poor fuel economy, 8 mpg


If the fuel pressure regulator vacuum lines smell of gas the I would suspect that and replace it. If the MAF sensor or O2 sensors are faulty then that would change the air-fuel ratios and give you poor mileage.

Sep 18, 2011 | 1983 Volvo GL

1 Answer

My Grand Voyager 3.3L is running really rough at the moment. For the past several months my gas mileage has dropped drastically. I have done a tune up (replacing the air filter, wires, plugs, fuel filter),...


POSSIBLE CAUSES COULD BE WATER IN GAS,FAULTY IDLE AIR CONTROL VALVE, OR FUEL PUMP COULD BE FAILING.CODE SCAN FOR EGR VALVE FAULT OR INTAKE AIR TEMPERATURE SENSOR.

Jul 10, 2011 | Plymouth Grand Voyager Cars & Trucks

1 Answer

1998 S10 4cyl. The check engine light came on this week and the truck will not idle accelerate smoothly. Mileage per gallon went from 27 mpg to 20 mpg. Could this be a problem with the oxygen sensor?


Yes it can be. Ive had this problem acouple of times. I had to keep my foot on the gas pedal when at stop signs to. Ran rich until I replaced o2 sensor.

Nov 21, 2010 | 1998 Chevrolet S-10 Pickup

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

Just moved from New Mexico to Florida and the gas mileage in my 2000 Grand Prix and dropped to about 10 to 12 mpg. Is it the change in elevation?


I just dealt with a similar issue.I moved from Florida to Missouri and yes there is a difference from elevation and the humidity in the air and gas mileage.

Jun 26, 2009 | 2000 Pontiac Grand Prix

1 Answer

Gas mileage has tanked on 2000 Grand Cherokee Laredo w/V8


I'm not sure I have a solution to this but the change in altitude should cause a change in mpg. However, the car was not put in a box and shipped there, it was driven...and should have adjusted gradually to the change. (computer should re-calibrate). The only item that may be affected would be the map sensor. Possibly, since it has always worked at one altitude, it may have worn in that area and is hanging up and unable to adjust.
If the trip was made quickly, the computer may not have re-calibrated itself yet (depending upon how long it's been in Alaska) You may want to try disconnecting the battery and then re-connecting it, or it may need to be manually re-calibrated using a scan tool. The computer likely is working properly though otherwise with that kind of mpg you should be blowing a bit of black smoke out the back. Only other thing I can think of is to check the air filter to make sure it's clean and not restricted.
as far as the brake thing goes, after that, I would shy away from the dealer unless it's for free warranty work...I could replace the entire system three times for that price (gold plated parts?)
Well, like I said, not a solution, but my thinking on paper!!
Good luck!!!

May 04, 2009 | 2000 Jeep Grand Cherokee

1 Answer

1996 Corolla DX runs cold


faulty thermostat. not closing to allowing coolant to stay in the engine till operating temperature is reached. replace thermostat.

Hope this helps

Mike

Jan 07, 2009 | 1996 Toyota Corolla

3 Answers

Poor acceleration, poor gas mileage


I have the same problem as talked about above. 2002 Hyundai accent gsi. HORRIBLE gas mileage. I only get about 320 km per full tank. My driving habits are good. i took it to the garage and they put it on the computer and no error codes showed up. Question: Can a MAP sensor be faulty but NOT show up on the computer diagnostic? I had my O2 sensor checked out and my exhaust, and changed the flex pipe. Car runs pretty good just horrible gas mileage and kinda crappy power. Changed fuel and air filter. Cleaned the fuel system entirely ($80 at garage not $4 bottle).

Anyone ever use a resistor in the MAP sensor?

Aug 18, 2008 | 2001 Hyundai Elantra

Not finding what you are looking for?
2000 Pontiac Grand Prix Logo

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8172 Answers

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

Answer questions

Manuals & User Guides

Loading...