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I have 1998 isuzu hombre I went to the local auto zone and error code was p 0303 I checked spark plugs coil pack and they are still good any other suggestions? ?

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This code means that cylinder 3 is misfiring. If the coil pack is OK then check the spark plug or wire. If they are OK check the injectors. If they are OK check the oxygen sensor.

Posted on Nov 13, 2014

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1998 isuzu hombre will not start when temperature gets below 32 degrees


run fault codes and look for a faulty ambient temperature sensor as if it is faulty the ECM will not know to enrich the mixture ( like pulling on the choke)

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I failed the emission test and I also went to get an check engine light test from Auto Zone. I received the codes P0300, P0301, P0302, P0303, P0304 and the results that I received from Auto Zone was valve...


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.

Hope helps.

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Ihave a check engine light problem..i`ve changed the plugs wires-coil pack.nothing helps it`s gotten worse the car will start to backfire and stall...any suggestions?????don


Did you go to Auto Zone or another shop and have the fault codes read withe the code reader? This sounds like your ECM has switched to Limp mode which is designed for limited use to get you to a chop for repair. Most likely it is a Faulty O2 Sensor but the Fault codes will tell you for sure in most cases.

Oct 16, 2010 | 2003 Kia Rio

1 Answer

Where is the distribtor?


you have a DIS (direct ignition system) it consists of a coil pack,ignition module,crankshaft position sensor and ECM. there is 2 on your vehicle. if you have no spark check your crank sensor or ignition module. or goto local auto store and get a spark check for 5 bucks which plugs inline of the plug wires either at the coil or plugs.hope this helps

Jul 13, 2010 | 1996 Isuzu Hombre

1 Answer

Isuzu Hombre pickup, 2.2L Vortec, Won't Start.


You need four things for an engine to run. 1. fuel 2. spark 3. compression 4. timing (spark at the right time. By your post it seems you have fuel and spark and you probably have compression unless you blew a head gasket. That leaves the timing. Check the timing and/or the timing belt or chain whichever you have.

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