Question about 1996 Pontiac Grand Am

2 Answers

Engine stumbles on acceleration

Does it more when fuel tank is full or engine is warm not cold

Posted by on

  • GoddessMaya1 May 19, 2009

    My 1996 Pontiac Grand Am SE stumbles upon exceleration as well..my check engine light comes on and I get a kind ofjerky pumping motion, like too much fuel is being umped in bursts. However I went to my local Advance Auto Parts store and they let me use their diagnostic machine for free. It told me that I had a misfire in the 4thcylinder and my O2 sensor is bad. The O2 sensor is what tells the car to pump and mix the fuel with air to run properly. If it doesnt work, the car wont pump fuel properly. Also, upon changing spark plugs discovered the nimwit that changed them last did not fully screw in the 4th plug and after replacement I now have an arc of electricity from the plug to the bundle of wires plugged into the end of the cover. That is an issue all it's own..I dont have a clue what to do about that. But that's some food for thought.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Fuel pump

Posted on Feb 11, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My 1987 mercury wangon runs fine and then it start to stumbles like its about to cut off.

Posted on May 17, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How to start this motor in cold weather?


Sounds like you need to check the fuel system .filter and pump

Oct 11, 2015 | Cars & Trucks

1 Answer

I have a 1996 dodge dakota 2wd took out the 5.2 and put a 5.9 in headers no cats no 02 sencers and my problem is when i start it cold idle is good but if i take it to 2,000rpm it will bog down then...


Without input from the O2's, the engine goes into fail-safe mode and runs in a full rich fuel trim. When the engine is cold the spark plugs are being "loaded up" with unburnt fuel, and engine stumbles. Hope this helps.

Mar 14, 2014 | 1996 Dodge Dakota

1 Answer

05 Pacifica stumbles during acceleration


check the manifold is not leaking on the intake side. also check and clean the intake top. carb clean helps to clean out all the muck out on to a cloth. also carb cleaner will help if you have a leak spray round the intake when engine is a temp. engine will cut out or speed up depending on carb cleaner used. were there is a leak.

Jan 19, 2014 | Chrysler Pacifica Cars & Trucks

1 Answer

Hello, my '90 corolla stumbles, misfires and has no smooth acceleration, i have replaced, plugs cap wires rotor fuel filter and performed compression check, also verfied timing marks @ tdc.. no check


How long has this been going on? Could be a bad tank of gas... do you fill up at good stations like Chevron or the cheap Mexican ones? Also if you filled up when the tanker truck was filling the station you may have ended up with a tank full of sediment; there's a lot of gunk in their underground tanks and when the tanker tops it off the filling action stirs up a lot of that ****. Try filling the tank with some high-quality 87 octane (91 will make it worse) after putting a bottle of fuel system cleaner in the tank. You should also try pulling the codes; some codes do not cause the check engine light to illuminate but are still stored by the PCM. If all else fails, go back to the basics... fuel, spark and pressure. If you can eliminate two you should be able to make your job easier.

Nov 17, 2011 | Toyota Corolla Cars & Trucks

1 Answer

After engine warm at idle in drive engine runs fine but slowly starts to loose rpm's and stumble. Sometimes will then serge above 1000rpm's. Also at cruising when giving a little gas engine will stumble to...


this is going to sound kinda stupid but i had the same problem with my 88 earlier this winter . It could be as simple as water in your fuel. the solution would be to put HEET in the tank. I prefer the red can unless you have a diesel. I live in interior alaska and if you let your tank get below a half it will condensate inside. This sounds to simple to be true, but if you live in a cold climate it makes a big differance. Water will make it run like ****.

Feb 11, 2011 | 1992 Chevrolet K1500

2 Answers

Vibration at idle


it may be idle control sensor or a bad mas air flow sensor--maf sensor in otherwords. or could be engine misfire at cold temp. start. only time when cold? or does run better when warm? try warming engine to operating temperature before driving,if problem removes it's self after warm up,up grade gas to 93 octane for 1 tank full. then see if problem goes away. it's cold where you are right? if so the fuel needs to be at least midgrade 89 octane fuel because 87 octane fuel will not start your honda correctly at cold temps. in cold weather 93 or super gas octane will start ,no problem,low octane fuel sometimes gels, or freezes at low temps. if in warm climate, change the fuel filter, add fuel injector cleaner to your fuel tank[preferablly lucas fuel treatment] this will lube your fuel injectors and give better fuel mileage. thank you for choosing fixya.com

Jan 04, 2011 | 2002 Honda Accord

1 Answer

98 Corolla stalls or stumbles when cold


It sounds like you may have picked up some small debris from the bottom of the gas tank when you ran it empty. You may need to run a fuel/injector cleaning solution through the next tank of gas to clear the debris and consider changing your fuel filter too. Sea Foam is a great fuel additive and I recomment trying it full strength. Hope this helps!

Oct 06, 2009 | 2001 Toyota Corolla

1 Answer

1994 Silverado stumbles on acceleration when cold


Is the check engine light on? If it is, take the truck to an autoparts store and have them use a scan tool to retrieve the fault code(s) stored in the computer. I would suspect a faulty throttle position sensor or bad EGR valve, but the code(s) should narrow the problem down. Sure hope this helped.

Jul 20, 2009 | 1999 Chevrolet Silverado 1500

Not finding what you are looking for?
1996 Pontiac Grand Am Logo

Related Topics:

689 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...