Question about 1998 Nissan 200SX

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Service engine soon

Only have put 450 miles on car myself but odometer reads 115k
stumbles on acceleration and smells like eggs

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  • waynemineau Oct 02, 2008

    egr valve flow problem can i fix it or is replacement inevitable

  • waynemineau Oct 03, 2008

    i changed my plugs yesterday and there was oil dripping off them do you know why?

  • Anonymous Mar 31, 2014

    Car whines esp when accelerating or decelerating. Smells like something is burning after hour or so of driving, just had new tranny installed about 8000 miles ago

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  • 178 Answers

Hello it sounds like you might have a bad map sensor the smell your smelling is raw fuel being dumped and being burned in the exhaust test the map sensor to see if it within range ,if it checks out okay check your iac motor idle air control valve if the pintle gets stuck in the bore it will cause stumbling ,hesitation,even no start conditions,goodluck please rate

Posted on Oct 02, 2008

  • Robert Morales Oct 02, 2008

    hello again you should be able to this your self if its a factory one it should just install aftermarkets usaully have a different design usally comes with different size orfice washers they have different numbers marked on them you will have to match up oem numbers to paper they give install the washer it calls for goodluck please rate

  • Robert Morales Oct 03, 2008

    hello look at the valve cover the gasket probley is leaking and its collecting in the plug ports goodluck please rate

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1 Answer

Engine stumbles only in no load circumstances. Idles smoothly, and stumbles only in no


no miles stated, 400k miles> or 100 = 100k?
if any 95 has 100k miles that be like a new car. no ?
5k /year, wow...
trouble is i cant drive car. and see this effect.

the issue is acceleration, right? :called Hesitations !
and only happens on a hot engine , yes?
and never happens wide open throttle.? correct?
HAPPENS:
only when tipping in the throttle at cruise. (then self corrects )
THE TPS sensors does that.
The TPS is a demand sensor. it sees driver DEMAND
acceleration, and this is detected and the PCM goes to ENRICH mode. this is done or the engine goes LEAN until the MAP BARO READINGS, catch up and correct fueling.
that is my wild useless guess. (not driven and me not scanning the PCM while it fails.)

The TPS is a rate of change sensor.
This is because all air meters made are slow.
The TPS hides this fact. until bad.
there are other causes,but im not there with my scan tool..
and (box of gauges)

Aug 29, 2015 | 1995 Jeep Grand Cherokee

1 Answer

1993 LS 400. Starting out the car just is slow. It's not the tranny. Tranny shifts perfect including reverse. I smell gas. Old lady drove car the whole time. 118,000 miles


IF WHAT YOU SMELL IS RAW GAS THAT IS AN URGENT PROBLEM THAT SHOULD NOT BE PASSED OVER. IF YOU SMELL A ROTTEN EGG SMELL THEN YOU MIGHT HAVE A CATALYTIC CONVERTER PROBLEM THAT GIVES POOR ACCELERATION. CHECK FOR FUEL LEAKS AND CHECK FOR ENGINE VACUUM AT IDLE. MUST BE AT LEAST 19 INCHES,. IF NOT, YOUR CONVERTER IS PLUGGED.

Apr 09, 2015 | 1993 Lexus Ls 400

1 Answer

I have a 2005 chevy impala 3.4l v6. I am getting the code P0300 (multiple misfire).i recently changed the spark plugs/wires/coils and have checked all vacuum lines, but my car is still idling...


Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms Symptoms may include:
  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
Causes A code P0300 may mean that one or more of the following has happened:
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor (more than likely your culprit)
  • Defective computer
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

May 26, 2011 | 2005 Chevrolet Impala

2 Answers

I have a 2005 chevy impala 3.4l v6. I am getting the code P0300 (multiple misfire).i recently changed the spark plugs/wires/coils and have checked all vacuum lines, but my car is still idling...


Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms Symptoms may include:
  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
Causes A code P0300 may mean that one or more of the following has happened:
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor (more than likely your culprit)
  • Defective computer
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck

May 26, 2011 | 1997 Chevrolet Tahoe

1 Answer

I have a 1.6,2002 beatle,it is surging(revs up and down on its own,using more fuel than normal and smells of fuel and egg type of smell any clues?


For the car reving itself, it could be the throttle positon sensor (i dont know much about it). I've experianced this myself but it comes and goes. Usually allowing the car to reach normal temp before driving properly helps this.

As for the egg smell. It will most likely be something to do with your fuel/petrol. Your engine wont burning sulfur properly and then turning it into hydrogen sulfide which is supposed to smell like eggs.

A good service should fix this, oil change, air filter, oil filter etc.

Feb 28, 2011 | 2002 Volkswagen Beetle Turbo S

2 Answers

Why does my 2002 nissan altioma give me a burnt egg smell when i accelerate on the highway?


usually ,when using the egg discription it referred to as a rotten egg smell ,not burnt.. if this is the case you may have a catalytic converter that is in need of replacement..

Dec 10, 2010 | 2002 Nissan Altima

2 Answers

2001 Pontiac Grand Am


you probaly have a small pin hole in the evap system somewhere. Mechanics usually wont try to fix this problem because its a pain in rear end to locate the leak. This problem should not effect the performance of the car

Apr 14, 2010 | 2001 Pontiac Grand Am SE

1 Answer

Engine light on; slow acceleration; rotten egg smell 2000 vw passat 132,XXX miles


Hey there riddick,

That rotten egg smell is a problem with your catalytic converter. Too much back pressure is not allowing your engine to run normally.

I'll bet its been getting hot too.

Warning: For your own safety, until this is resolved, do not look under or stick your head under the car with the engine running. I've been in a vehicle when a converter with these same symptoms blew apart at the seam. Made my head hit the roof. If it happened a few minutes earlier I would've gotten a faceful of freshly flattened converter. So be careful.

To tell for sure about the problem, try to get it to an auto parts store that does free code readings from your On Board Diagnostics. There should be errors referencing the engine, O2 sensors and emissions. The exact diagnostic codes with determine your next course of action.

Be safe,
Mike

Sep 08, 2008 | 2000 Volkswagen Passat 4Motion

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