Question about 2001 Saturn S-Series

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I have a 2001 Saturn with a random misfire in cylinder 1. Replaced spark plugs, knock sensor, fuel injection service, new wire set, two new coil packs and a module, to the tune of $1500!! Check engine light just came back on just prior to inspection!! Help! In NY you need to have yearly inspections, and this will not pass until the problem is fixed!!

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One thing that i would check is the Crankshaft sensor...Pull off the wiring to the sensor and connect the leads of an ohmmeter to the terminals...Its resistance should be between 700 to 900 ohms.. I would not keep replacing the sensors at random....You will have more money in the car than its worth..A good meter and a Haynes manual will show you how to check the sensors....

Posted on Feb 12, 2010

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My 06 saturn ion check engine light is on with codes p0300 p1174 and idle roughly when stopped . Could it be the o2 sensor?


There is a technical service bulletin that states the correct procedure to repair this issue is to replace the injectors with updated units AND reprogram the pcm for the new injectors.

Jul 30, 2016 | Saturn Cars & Trucks

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WHERE IS CANSITER PURGE VALVE LOCATED FOR 2.2L SATURN ION 2006


code p0300 refers to random/ multiple cylinder misfires detected===causes spark plugs---HT leads---injector/s---ignition coils---low compression ---wiring. Have fuel pressure test done on the fuel manifold to check pump, fuel pressure regulator and filter (low pressure will cause injectors to not work when they should.) ensure that there is space between HT leads as they will cross jump

Dec 23, 2013 | Cars & Trucks

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2009 saturn aura random misfire cyl 1 codes p0014,p0201,p0300


okay there are a few things that need to be checked here, seems like you were testing the wrong things, lets start with the po300, this code is for a misfire a random one which means any cylinder at a certain time has misfired which is due to the next two codes listed, the po014 which is the exhasut camshaft postion sensor system performance and the po201 injecotr control circuit for cylinder #1.

Have the injector ohm ed and the connection and wiring checked, this problem may be a bad injector or wiring to cyl # 1 and the cam sensor needs to be tested also on bank 1exhaust side. good day

Sep 28, 2012 | 2009 Saturn Aura

2 Answers

Multiple misfire


Hi Jason:
A Random/Multiple Cylinder Misfire Detected unfortunately doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

A code Random/Multiple Cylinder Misfire Detected 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.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 26, 2012 | 2001 Pontiac Grand Am SE

2 Answers

Egr valve for 1997 cheve Blazer code is 0300 misfireing what could be the trouble


usually this code is followed by another number 1-4 or 1-6 or 1-8 depending on how many cylinders your vehicle has ,, what the code you got is a basic P0300 Random/Multiple Cylinder Misfire Detected 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
  • 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 ope

Jun 23, 2011 | 1997 Chevrolet Blazer

1 Answer

PO301 code on Hyundai Sonata. Replaced wires, plugs, coil packs, and mass air flow sensor.


P0301 - Cylinder 1 Misfire Detected.


Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder


Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Jan 17, 2011 | Hyundai Motor 2003 Sonata

1 Answer

Giving a 300 and a 301 code where do i start sounds fine when started and then when you put in gear it start misfiring


P0300 - Random / Multiple Cylinder Misfire Detected

Possible Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plugs
- Replaced Injectors
- Replaced Ignition Coils

P0301- Cylinder Number 1 Misfire Detected

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Most likely your issue is with cylinder number 1. Follow the info I have provided and you should be able to solve this issue.

Jan 14, 2011 | 2002 Toyota Tacoma

1 Answer

1998 Audi A4 Quattro, 2.8L, AHA, 75K miles, bought...


im a tech in the bronx and i dealt with the same code for the misfire. burt i realized that there wasnt any power to the coil of #2 cylinder. I replaced the sensor mounted on top of the air filter box, which solved this problem.

May 20, 2010 | Cars & Trucks

1 Answer

Check engine light on 2001 Saturn which then says random misfiring to cylinder 1.


Do basic ignition system diagnostics and inspect spark plug ,wire and terminal tension at coil tower. No green,powdery di-electrical dust should be on the coil tower. Hopefully it will be one of these simpler basic items like a plug wire for cylinder #1 which is the cylinder closest to the belt

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2 Answers

Random Cylinder Misfire


The cam sensor code is the part to concentrate on, also check the timing belt for excess play causing the camshaft to whip, this will cause a random miss.

Oct 30, 2008 | Saturn SL1 Cars & Trucks

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