1998 Nissan Pathfinder Logo
J
Jonathan Hunter Posted on May 07, 2014
Be the first to answer

1998 nissan pathfinder p0300 code loss of power at take off replaced wire plugs cap and rotor also tps and mass sensor and valve cover gaskets leaking and replaced all vacuum lines on vehicle what is wrong?

Answer This Question

5 Related Answers

Anonymous

  • 33 Answers
  • Posted on Feb 17, 2009

SOURCE: 1998 nissan sentra wont start

have you checked the timing belt?

Ad
johnjohn2

Johnny Brown

  • 5763 Answers
  • Posted on Nov 07, 2009

SOURCE: I have replaced EGR,pvc,plugs,wireset, cap

check aux air control valve , thats what controls the idle it may be bad,also with that kind of mileage i would replace the mass air flow sensor ,do that first, good luck , the mass air flow sensor has alot to do with your gas mileage .

JIMMY

  • 1374 Answers
  • Posted on Apr 19, 2010

SOURCE: leaking coolant from head gasket area and valve

Well the head gasket job will cover the valve cover gasket ( you have to do one to get to the other) Bring it to a repair shop its about a $1500 job.

kel1guy2002

Kelly

  • 3740 Answers
  • Posted on Jun 22, 2010

SOURCE: R&R EGR Valve 97 Nissan

It takes a 17 mm wrench to losen the tubing on both sides of the valve. Then it is a matter of unmounting the bracket and pulling off the vacuum line. Make sure that you losen both lines BEFORE unmounting the bracket or you will never get it off. Sometimes getting the tube fitting (flare nut) loose requires a flare nut spanner wrench. Some EGR vlaves on have one flare unt and have gasket under the EGR valve where it mates to the manifold. Make sure you replace the gasket if yours has one.

(flare nut spanner wrench)
http://t3.gstatic.com/images?q=tbn:JXlnPyZf9DSRLM:http://www.samstagsales.com/images/sw24-11x13.jpg

I also recommend that you use a long piece of solid copper wire #10 to push through the tubes to remove the carbon build up.

It really is a matter of time. The most difficult thing about changing an EGR valve is getting the flare nut(s) loose.

Thanks for using FixYa.

Kelly

Anonymous

  • 463 Answers
  • Posted on Feb 21, 2011

SOURCE: Vehicle: 1998 Nissan Pathfinder

Hello,
When the MAF on most vehicles reach a point of preventing the engine from starting, you can usually just unplug it and the engine will start. If that doesn't work-
You may want to try having the O2 sensor, ( Oxygen sensor ), checked. It works with other components of the emission system and can cause similar symptoms as the MAF, including preventing the engine from starting.

Donnie

Testimonial: "Other similar issues are the cam position sensor, which is located inside the distributor. It's easier to just replace the distributor."

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

What is code p0300?
P0300 - Random, Multiple Cylinder Misfire Detected Fault Code Definition
  • Random, Multiple Misfire Detected
Symptoms
  • Check Engine Light flashing
  • Rough running, hesitation, and/or jerking when accelerating
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger theP0300
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems
Read full answer
Jul 25, 2014 • 2000 Dodge Durango
0helpful
1answer

Why do i get a p0300 random minn code?
a small vacuum leak will cost that code to show up.so check your lines.
Read full answer
Sep 30, 2017 • 1998 Chevrolet Tahoe
5helpful
2answers

Why the loss of power and po300 code?
HARD TO SAY WITH OUT BEING THERE BUT THIS MIGHT HELP .
Crankshaft sensor Was the trouble with my 99 Chevy truck after replacing many components like coil cap rotor wires and so on .
http://www.obd-codes.com/p0102 Code P0300 Causes and Fixes Code p0300 is a code that is generated when your engine has a misfire that is not related to only one cylinder. Sometimes this code will be set in addition to other codes such as p0301 which means that there is a misfire on cylinder 1 (cylinder 1 is the number one cylinder when looking at the firing order. It is generally the forward most cylinder on the engine.). If these engine codes are present as well the you should diagnose those first as they are probably causing code p0300.
This code will set your check engine light and needs to be fixed as soon as possible. If it is not then you will probably need to replace your catalytic converter as well as the problem that is causing your misfire.
There are many causes for this obd code. Since it is a "random misfire" or "multiple misfire" this means that the misfire is on different cylinders and not just one all the time.
Common Causes
  • Low Fuel Pressure
  • Vacuum Leak
  • EGR system malfunction
  • Internal Engine Problems (such as low compression)
Less Common Causes
  • Faulty Coil
  • Faulty Spark Plugs and/or Wires
  • Camshaft or Crankshaft sensors
  • Ignition module
  • Computer
Read full answer
Jun 12, 2014 • 1998 Chevrolet Tahoe
1helpful
3answers

Cylinder misfire p0300
START THE ENGINE AND LIFT THE IGNITION WIRE LISTEN FOR SPARKS.IF ONE OR MORE CYLINDERS DON'T CHANGE THE WAY IS RUNNING ,YOU GOT THE BAD CYLINDER. LOOK FOR BURN MARKS ON THE WIRE(BLUE/WHITE SPOT)IF SO REPLACE THE WIRE.SOME TIMES VALVE COVER LEAKING IN THE TUBE. REPLACE VALVE COVER GASKET,BLOW THE OIL OUT BEFORE REMOVE THE SPARK PLUGS.REMOVE THE SPARK PLUGS AND INSPECT THE ELECTRODE.GOOD ELECTRODE WILL BE WITH SHARP EDGE ,IF ROUND OR LIKE CONE REPLACE WITH DENSO OR NGK ORIGINAL EQUIPMENT . REMOVE THE DISTRIBUTOR CAP AND LOOK FOR OIL IN THE CAP. IF OIL INSIDE REPLACE DISTRIBUTOR. IF NO OIL INSPECT THE CAP AND ROTOR FOR THICK WHITE DEPOSIT OR ROTOR FOR BLACK BURN MARKS. REPLACE CAP AND ROTOR.IF EL.SYSTEM IS OK SPRAY CARB CLEANER ON INTAKE MANIFOLD AND LISTEN FOR RPM CHANGE.IF CHANGE THE RPM REPLACE MANIFOLD GASKET.
Read full answer
Mar 29, 2014 • 1998 Acura Integra Type R
0helpful
1answer

Truck at times seems to vapor lock
After all that the only thing I can think of is Mass Airflow Sensor. Should go get a codes reading, see if that helps, they're free at some autopart shops.
Read full answer
Dec 17, 2017 • 1997 Nissan Pickup
0helpful
5answers

2002 Nissan Xterra Supercharge 3.3L - problems we are having are trying to accelerate & just don't have any POWER going uphill steep or even a slight hill, at a dead stop or trying to change lanes...
COULD BE SUPERCHARGER BYPASS VALVE HOSE LEAKING OR BLOCKED CAUSING LOW POWER.
Read full answer
Jul 18, 2011 • 2002 Nissan Xterra
0helpful
1answer

I have a 2002 GMC Sierra 1500. 4.3 liter engine. I brought it to autozone and they put the gauge on it and got two codes P0140 and P0300. I had my distributor cap replaced, ignition rotor, plugs ,wires,...
Clean mass air flow sensor with a nonchlronated brake cleaner,install new air filter and check all vacuum lines for leaks then check for vacuum leak around or at intake manifold.Code P0140 is for mass air flow sensor code P0300 is a multiple misfire which more than likely is a vacuum leak possibly intake manifold gaskets leaking.
Read full answer
Apr 11, 2011 • 2002 GMC Sierra 1500
1helpful
2answers

P0305 code, new plugs, wires, cap, rotor, coil, fuel filter and still getting p0305 code any good ideas?
means misfire in #5 cylinder. found this for you. hope this helps
Common Problems That Trigger the P0305
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems
Common Misdiagnoses
  • Fuel Injectors
  • Oxygen Sensor(s)
  • Power Train/Drive Train problem
Read full answer
Jan 05, 2011 • 1999 Chevrolet Suburban
0helpful
1answer

Leaking coolant from head gasket area and valve
Well the head gasket job will cover the valve cover gasket ( you have to do one to get to the other) Bring it to a repair shop its about a $1500 job.
Read full answer
Apr 19, 2010 • 1998 Nissan Pathfinder
2helpful
1answer

96 olds ciera trouble codes p0122 p0300 missingthrough entire ran
A code P0122 may mean that one or more of the following has happened:
  • TPS not mounted securely
  • TPS circuit short to ground or another wire
  • Faulty TPS
  • Damaged computer (PCM)
Possible Solutions Some recommended troubleshooting and repair steps are:
  • Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
  • Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
  • If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
  • If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
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
  • 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.
Read full answer
Dec 13, 2009 • 1996 Oldsmobile Cutlass Ciera
Not finding what you are looking for?

View Most Popular

1998 Pathfinder

  • Cars & Trucks

Related Question

What is code p0300?

  • 2000 Dodge Durango

Related Topics

630 views

Ask a Question

Usually answered in minutes!

Popular Questions

How to replace a knock sensor on nissan pathfinder

1998 Nissan Pathfinder

Why does my Nissan Terrano 2.7 turbo diesel have no power?

1999 Nissan Pathfinder

Removel of altanator on 2001 nissan pathfinder

2001 Nissan Pathfinder

Nissan pathfinder rear door won't open

2001 Nissan Pathfinder

Remove and Install Starter for 2001 Pathfinder

2001 Nissan Pathfinder

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Nissan Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

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

Answer questions

Manuals & User Guides

Loading...