Question about 2000 Nissan Altima

1 Answer

Engine lopes while idling code 300 runs good driving

Posted by on

Ad

1 Answer

  • 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
  • 720 Answers

Hi there,

If your DTC code is correct, P0300 means: Random/Multiple Cylinder Misfire Detected.

As you have not indicated any codes from 301 - 306, then the computer has not been able to identify which cylinder misfired.

Therefore, you will need to begin checking for possibilities which could trigger the random (or multiple) misfire, which can be anything from:

- air leaks (this can disrupt readings on the engine's computer). Try spaying liquid around the inlet manifolds, check hoses etc for leaks.
- Bad coil (assuming engine has a coilpack)
- Bad or poor spark plugs
- Bad or poor condition HT leads (going to the spark plugs)
- Bad cylinder compression (compression test will confirm this)
- Leaking head gasket (this can also cause bad cylinder compression) - are you losing coolant from your cooling system?

These are just some possibilities...

Cheers,

Scott

Posted on Nov 12, 2009

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.
New users get to try the service completely Free afterwhich it costs $6 per call 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

Car lopes as soon as it warms up


idle air control is looking for base idle. throttle body base idle plate is dirty with carbon. cleaned out throttle plate with carb cleaner and tooth brush. use rags to catch black carbon.open plate.by some one hold throttle plate open with gas pedal. engine not running. after completed, start engine. run 1500 prm for a short time to clean out excess fluid. that should fix your problem..

Jan 18, 2013 | 1991 Chevrolet Corvette

1 Answer

1998 gmc 2500 4x4


check for vacom leak on engin intake

Mar 15, 2010 | 1998 GMC Sierra

1 Answer

Engine lopes at idle and check engine light on


In this case having the check-engine light is a good thing. Take the car to AutoZone and have them scan the computer for codes - they do it for free, whereas a shop will charge up to an hour's labor. Have them give you a printout of the codes, and post them here as a comment/reply. I can help you define them and see what needs to be done.

Dec 06, 2009 | Isuzu Rodeo Cars & Trucks

1 Answer

Loping when idling


Any time that the check engine light comes on, it indicates that the computer has found a condition serious enough to require service action. Rent a scanner, read the code(s), and pursue to repair(s). The scanner will clear the trouble light when the repairs are complete.

Oct 24, 2009 | 2003 Lincoln Navigator

1 Answer

2001 Forester, Rough idle and engine loping driving at low rpm


I had a similar problem on my 2002 Impreza RS 2.5 (same engine and engine control system). In my case it was the O2 sensor on the intake manifold. This happened at 34,xxx mi. so it was covered by the warranty. Replacing the part is very easy. (two bolts and a wiring harness). Obviously I would start simple and cheap and work your way to expensive and difficult.
From my understanding its all caused from the engine missfiring. If its been a while or never, I'd change the spark plugs first. (stick with the Subaru Parts plugs, I went after market and the dealer claimed the plugs were not the correct "temperature" and had to pay for the new plugs and install although they did it without my permition. Thats a whole nother story).
Could also be the manifold pressure sensor.
Either 02 or manifold pressure sensor may cause intermitent check engine light.
Where I live Brookline,MA , Autozone will run a free diagnostic on your car by hooking up to your ECU and will give you the trouble codes and possible remidies. Of course there are no guarentee's but it will point you in the right direction.
Good Luck

Jun 15, 2009 | 2001 Subaru Forester

4 Answers

5.3 L Missing and Rough Idle Intermittently


i have a 2001 chevy z-71 5.3L. I keep getting a random/multiple misfire code for cylinder 1 . I have replaced plugs, wires, coil pack(only on #1 cylinder)., and fuel pump. I still keep getting the cylinder 1 misfire code. I put truck on a scanner and watched the cylinders. # 1 misfires at idle but quickly stops misfiring at around 1000 rpms. you can here the engine miss at idle but truck runs great on road . anyone else ever had this problem?

May 05, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Rough idle and engine will shut off after warm.


Check the exhaust manifold gasket. I have a 2003 SVT Focus I had a problem with it loping at low RPMs. I had a free flow exhaust system. When I bought a new exhaust manifold I replaced the gasket and the problem went away.

Apr 07, 2009 | 2001 Ford Focus

1 Answer

Loping engine


try cleaning your idle control valve, make sure you dont have any codes in your computer, if you do address those codesl

Feb 01, 2009 | 2001 Chevrolet Silverado

Not finding what you are looking for?
2000 Nissan Altima Logo

729 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

726 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides

Loading...