Question about 2003 Chevrolet Impala

1 Answer

My 2003 Impala 4.3 engine is running by itself down the road without even a foot on the gas feed and do 60 mile an hour.. Then will run like that idling too. Have replaced oxygen censor valve. No one has been able to figure out what is going on.

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 34 Answers

It might be your throttle position sensor or your map sensor

Posted on Jul 29, 2010

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My question: what can cause the car to do this?


I assume the car you are talking about is your 1968 Dodge Dart GTS with a 4-speed manual transmission. The engine has a special camshaft, Chrysler P/N 312044, which has a 60 degree overlap in the valve timing, since the engine is built to rev in excess of 6,000 RPM. The problem with your car is obviously a leaky accelerator pump. Why don't you get a car that (1) does not have to run on premium gas (because of its 10.5:1 compression ratio), and (2) uses fuel injectors instead of a wild 4 barrel carburetor made for 1/4 mile drag racing? I happen to know that that is the car you are referring to, because you did NOT say that it WASN'T!

Apr 29, 2017 | Cars & Trucks

1 Answer

I have a chevy s10 2.2 2003 truck and one day it ran about five miles. then stalled. it started back up idled fine but put it in gear. stalled again. had to get towed home replaced the fuel filter,truck...


When you press on the gas when the truck is running, does it rev up?

Did it die while driving down the road (foot on the accelerator) or when idle? - If so, try cranking it and get your RPMs up to 1500-2000 RPMs and put it in drive (with your other foot on the brake). See if it will continue running if you never take your foot off the gas.

Apr 06, 2013 | Cars & Trucks

1 Answer

Shaking sound like running over road strips


My Pajero does the same (Exactly) and I suspect wheelbearing rear. Will let u know once Ive stripped it down.

Jan 28, 2013 | Mitsubishi Cars & Trucks

1 Answer

Checking engine light maybe tranmission driving home all of a suddenly it shifts to may 1 gear going 20 milles hour. Then I stop and i put it in N I let it running then I put in ...


When you get a check engine light it means a fault has occurred and a fault code for that is in memory, now you need the fault codes or codes read to see what is going on and then troubleshoot the system.

Apr 13, 2017 | 2003 Honda CR-V

3 Answers

Engine shut down after 15miles then won't start for half hour


just went thru the same think wit a s 430 it was the crank position sensor . 60 bucks at auto zone and it took me 5min. 2 install if u need help feel free to call me 918 808 9706 chris

Feb 20, 2009 | 2000 Mercedes-Benz S-Class

1 Answer

My 1991 chevy s-10


when i start my 91 s10 blazer it try to stall so i have to give it gas to keep it running then when i leave out of the drive way and go down the road it has problem get the right amountof gas to go but once it hit 60 -70 mile an hour its fine

Dec 31, 2008 | 1991 Chevrolet S-10 Blazer

1 Answer

Car won't start


Your fuel pump is sticking and not pumping, this is common if you run the fuel down to less than 1/4 full, the fuel pump needs the gas to cool itself, below a 1/4 tank the pump is not getting cooled and after repeatably running low on fuel it overheats and fails. Running the car near 1/2 tank extends the pump life to many years more than running tank below a 1/4 full..

Aug 06, 2008 | 2003 Chevrolet Impala

Not finding what you are looking for?
2003 Chevrolet Impala Logo

126 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76132 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides

Loading...