Question about 2000 Buick LeSabre

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MISFIRE ON ALL CYLINDERS

1997 2.2 CAVILIER REPLACED ALL WIRE PLUGS CAT FUEL FILTER AND ALL INJECTORS NOW MY ISSUE IS THE CAR WONT GO OVER 20MILES AN HOUR -I HAVE NOT CHECKED THE COILS OR CONTROL MODULE DO TO THE FACT IT HAS SPARK AND IT RAN GREAT FOR A DAY AFTER JUST REPLACING THE WIRES AND PLUGS IM AT A LOSS PLEASE ANY HELP THE MODULE COST A PRETTY PENNY AND ARE A PAIN IN THE REAR TO GET TO

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Check the fuel pressure. The tool is cheap but the fix is not.

Posted on Feb 13, 2009

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1997 4Runner Limited 4wd, auto, 6cyl. Engine running rough. Replaced plugs, wires, ignition coils, fuel filter, and computer .... big bucks and still running rough. I and the Technician need help! On my...


First the DTC P0304 is a misfire on number 4 cylinder which would be a sparkplug,plug wire,coil or a fuel injector and sense you've replaced three out of the four I would think you have a clogged or faulty injector.As for the DTC P0300 that is a random misfire detected which could co-inside with the bad injector.If it were me I would replace the injector and go from there and see if that fixes the problem.

Oct 06, 2013 | Cars & Trucks

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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

2 Answers

Engine cranks but wont start has an obd p 300 &p304 help me


P0300 Random/Multiple Cylinder Misfire Detected, the 304 is for cylinder number 4 any of these could be wrong 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

Jun 21, 2011 | 1996 Eagle Vision

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

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

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

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

1 Answer

Took my car to have check engine light checked. It said misfire cylinder 2. I replaced the spark plug wires and spark plugs and it still says misfire cylinder 2. What is the next step? Thanks Steve


In modern cars so much can go wrong to indicate an issue and a computer in the car can get confused as to what is really occurring. In most cars a misfire indicates either an incorrect firing order, shorted wires, bad plugs, or bad coil. Since you have replaced the wires and plugs we can rule those out. Im also assuming after the second engine code you pulled #2 plug and made sure it wasnt fouled with oil, was gapped correctly, and reinserted. To produce a sufficient spark for combustion the alternator sends power to a "Coil" which is in reality a storage point that then sends an amplified electrical current down the spark plug wire to the cylinder to fire the plug. If the car is truly misfiring you will notice a rough idle, fluctuating RPM's, and lack of acceleration. If you are experiencing any of these I would look at replacing the coil. If you arent experiencing any of these I would have the code cleared again and complete one drive cycle 100 miles and then have codes read again. If you still get a Misfire error some other causes known to occur with Rio's are fuel filter issues, gas caps, and fuel injector issues. Although rare, these can cause issues with the cars fuel delivery and emissions which can confuse the sensor in the ECU. I would try injector cleaner, replace the fuel filter, and gas cap . If funds are an issue then based on symptoms I would start with injector cleaner first $3, Filter $12, Gas cap $12, Coil $48 to $200+

Jun 06, 2010 | 2001 Kia Rio

1 Answer

1997 S-10 4.3 6 cyl, 5 speed, VIN X, 250,000 miles, Misfires under load, Fuel Pump and pressure good, Plugs, Cap, Wires and Coil replaced, Timing Chain replaced, Gets random multiple misfire code 0300 and...


Check the ohm's reading on the fuel injectors, they should each read around 14-16 ohm's cold for most 1997 GM engines, and if any fuel injectors are not within range replace them.

May 09, 2010 | 1997 Chevrolet S-10 Pickup

1 Answer

Multiple cylinder misfire detected


Thank you for all the information. I don't see how you made it worse unless the injectors were not installed correctly. If you remove them you are suppose to replace the o-ring on each of them and oil them (the o-rings) before installing them. I would check the air filter and the CAT (for excessive back pressure. Also check the rest of the exhaust for damage. If a pipe is kinked or flattened it would need repair. Also GM's are known for some issues with there e-vap systems. You may want to check it out. The gas cap, charcoal canister, vacuum lines. Well good luck.

Apr 16, 2009 | 1997 Chevrolet Lumina

1 Answer

MISFIRE ON ALL CYLINDERS


Hello, As you have probably already figured out , there are many things that can do this. here are some things you need to check.
Ck fuel pressure. It should be between 41-47 lbs
Ck coolant temp sensor. At operating temperature (194 degrees) it should be about 241 ohms, At 104 degrees about 1459 ohms
At 70 degrees, it should be about 3500 ohms.
If you want to ck the intake air temp sensor, you can use the same ohm readings as the coolant sensor.
The coil packs are certainly a good possibility. They do fail.
Ck your crankshaft position sensor. It should be 800-1200 ohms.
If you can't figure this out yourself, you may need to find someone that has a scanner. This may help you.diagnose this problem.
If you find this information to be correct would you please enter a "fixya" rating.
Thanks, Gator241

Feb 09, 2009 | 1997 Chevrolet Cavalier

3 Answers

1997 ford f150 cyliner 7 misfire


sme problem had to have it put on computer and codes reset

Feb 05, 2009 | 1998 Ford F150 Regular Cab

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