Question about 2001 Pontiac Grand Am SE

1 Answer

Surging while driving

While driving the car will surge, the rpm will go from 2000 to 2300 then back again, new plugs new fuel filter, my next step is changing the tranny fluid.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    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.

  • Expert
  • 80 Answers

There is a broken or diconected vacuum pipe, you can listen for air leakage with engine running and hood open, push pipes and note difference, goodluck.

Posted on Aug 02, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2000 Suzuki Esteem 1.8L.. I went to start my motor & turned it off right before started. I heard some kind of backfire. Then I started it and it's been idling high, the surging. Please help!!


scan it yet, a FULL OBD2 scan? why not?if not.
now is the time...


the 1.8L J18 engine, same as the older Sidekick sports used.
same engine , know it I do.
its the precursor to the J20, (j18 is under-stroked, j20 with many of the same parts. inside)
the back fire means explosion sound to rear end of tail pipe?
yes, that is rich raw fuel in the muffler. plus Air.
if there are exhaust cracks and then engine goes rich this can happen( a double failure)
if how ever BACK means, back to the Air cleaner, then that be different reasons, (timing)


engine now starts.?>
engine runs.? has full power, car drives ok.?
JUST?
SURGE,. you never said.

does engine get hot? 180F or more and holds (y/n)
ever get a full tuneup this decade,
most dont so i tell you, bad spark causes, misfire and raw fuel is wasted to the exhaust and sure can go boom.

surging usually means the ISC can not control idle
so it hunts, (a suzuki software engine on all 90s engines)
PCM errors, inside it. (dangerous too)
a modern car, if idle goes too high the ecu commands the ISC closed
and holds it there solid, (safe way , no hunting allowed now)]
so if this car surges, it's , lean engine.

some think flooding is surging.
and this is usually below 800 rpm,
almost stalls, then corrects, seems like a surge.

next time post rpm range of surge.?????

do not drive a surging engine, do not be like Toyota drivers. (over 800 rpm hot)

surge from 400 -800 rpm is class 1 surge.
surge from 800 to say 2000 RPM is class2, and very dangerous to some folks, (key off, get car fixed, tow it)

The ECU controls idle speeds. (hard coded servo controls)

Mar 18, 2016 | Suzuki Cars & Trucks

1 Answer

2003 protege surges in rpm


When you say " surges in rpm" you mean it surges when you give it gas, press down on the accelerator. It could any one of a dozen reasons for this; dirty air filter, dirty gas filter, foiled spark plugs, ignition problems, faulty fuel regulator faulty speed sensor, etc. Have the car's computer scanned for trouble codes which will identify where the problem is. Auto Zone and Advance Auto will do a scan.

Jun 12, 2014 | Mazda Protege Cars & Trucks

1 Answer

Surging and stalling


Get it check out call someone to do it for you

Jan 18, 2014 | 1999 Pontiac Grand Prix

2 Answers

1994 ranger problems


AHHH did you check the fuel filter, 80% of faulty fuel pumps that I have worked on have only been the filter

Jan 06, 2014 | Cars & Trucks

1 Answer

99 chevy tahoe idle surges and then dies


possible idle air control, will cause vehicle to surge and rpm fluctuate most call it iac

Nov 22, 2012 | Cars & Trucks

1 Answer

When you're idling or driving, there are short surges in power when the car just seems to take off. As you keep driving, it loses power to where you can only go 10 to 20 miles per hour. The next day we...


I would first check the fuel filter to see if it is clogged. If that is good, test the fuel pump to see if it is working properly. Next check the fuel injectors are not clogged.

Aug 18, 2010 | 1999 GMC Sierra 3500

1 Answer

2003 passat surging at idle and take off at low rpm's . NO surging at idle if in park.. only when car is in gear. major acceleration hesitation when starting up from stop lite... once rpm's up to 20k...


First clean the throttle intake butterfly with wd40 and a cotton rag and lightly brush wd40 onto the left and right bush(where the plate swivels on) this is the fat black pipe on the right of the engine in front.Are your spark plugs ok,air filter?.Dont forget the fuel filter at the back under the axle(covered with plastic undertray).

Feb 13, 2010 | 2003 Volkswagen Passat

1 Answer

2001 3400 engine idle hunting


Faulty injecters might be the problem. Pull a couple off and have someone turn the key to the on position and see if they are spraying properly

Nov 02, 2009 | 2001 Pontiac Grand Am SE

1 Answer

96 Jeep Cherokee RPM Surge While Driving


If the problem began before you changed the plugs that they are likely OK...Some engines "like" certain brand plugs better than others. You may have a weak ignition coil. Poor spark will generally show up at higher rpm's. Spark should be blue and have good "snap" to it and should easily bridge a 1/4" gap or better. If fuel was contaminated, it should show up at lower rpm's as well. System cleaners sometimes work but often are added far too late to do any good. (tank can hold up to a gallon of water without noticing it.) I use 3oz of acetone and one oz marvel oil per 10 gallons of fuel about once a month...cheaper and more effective than most cleaners. (and does not "melt" gaskets and seals as legend has it) The vehicle speed sensor can also give you problems but needs testing to determine if it's got any problems.
It's difficult to diagnose by remote control, but I hope you benefit form something here!

Jun 12, 2009 | 1996 Jeep Cherokee

1 Answer

Corolla 96 motot starts to cut and/surge in and out


firstly remove the inlet fuel line at the filter and and blow down line with a compressor ,removing fuel cap first,if this doesnt work then it could be fuel pump pressure of air flow meter ,but iam often wrong with this sort of thing and it turns out to be the radio,all joking aside try blowing out fuelline doesnt work??then take it to dealer for computer check

Nov 12, 2008 | 1996 Toyota Corolla

Not finding what you are looking for?
2001 Pontiac Grand Am SE Logo

486 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

60960 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...