Question about 1999 Oldsmobile Alero

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Missing on #1 cylinder

Changed spark plugs and wires ignition coil over #1 cylinder

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  • labutnew Nov 26, 2008

    did it

  • labutnew Nov 26, 2008

    leak vaccum , sensor

  • Anonymous Mar 26, 2014

    Replaced spark plug , cable , coil , Icm module, still the same problem , please help somone

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  • Expert
  • 341 Answers

Your next step is to check the compression and fuel. You could have low compression or a bad fuel injector or a Burnt valve

Posted on Nov 26, 2008

3 Suggested Answers

  • 373 Answers

SOURCE: 2001 hyundai santa fe 6

HI......
OK. just follow the number on the ignition coils.
And the number on the cylinders are.
The FIREWALL side are 1,3,5, Starting from the belts location.
The RADIATOR side are 2,4,6, Starting from the belts location.
The coil with number 1 go to cylinder 1. as the same way the rest of the coils and cylinders.

OK... I hope this solve your question .

THank you for use fixya.

Posted on Jul 25, 2008

  • 85 Answers

SOURCE: No fire from coil to #1 cylinder

Ok since you did all that if you want to swap around fuel injectors taking note where you put cylinder 1 injector. Lets say you swapped it with cylinder 4 . Now if you get a different code say P0304 which is for cylinder 4 misfire then you know it is your injector at fault. These are wear items and should be replaced every 100,000 miles.
Also i would suggest if you dont want to do that is get some good high octane gas when you are completely empty and fill to 1/4 tank now put in Lucas Oil fuel injector cleaner and run the car till empty. Now fill up tank with high octane gas in see if this helps. Clear code after your second tank of gas and see if the code comes back. if code does pop back up then i would do the swapping of injectors as i stated earlier. I hope this helps and good luck with the diagnosis.

Posted on Feb 21, 2009

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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3 Answers

Replaced coil pack on 3800 pontiac bonneville and its still missing what now?


First you need to determine what type of miss you have. Is it random on all cylinders, or is it restricted to one or two cylinders? Random misfire can be caused by crank or cam sensors that are starting to give out. Single cylinder misfires can be due to plugs, wires, coils (you already addressed those), as well as internal issues such as burnt or broken valves.

Oct 23, 2015 | 2000 Pontiac Bonneville

1 Answer

I have a 1996 chrysler concorde my car is running like it missing changed wires n spark plugs but my exhaust manifold is turning cherry red my car still missing any idea ? Please


It could be a bad coil. See which spark plug wires have spark when cranking the engine over, and which do not have spark. You have a coil pack with 3 ignition coils. So one coil supplies spark to two cylinders. You may find two cylinders not firing from one coil.

Jan 28, 2014 | Cars & Trucks

1 Answer

Replacement Spark Plugs Continually Misfiring for Cyl. #1


Locate the ignition coils - they are mounted on the ignition module. Remove the wide connector that goes to the module. You will have to unscrew it first. Spray some WD40 on the connector pins and try to scrub them with a tip of a small screwdriver. Be delicate not to brake or bend anything. Reconnect the connector. Start the engine and see if it still misses.
If it still does, try to touch/move each of the wires that go to the ignition module. BE VERY CAREFUL not to touch any of the moving parts of the engine as you have to do it with engine running.

If it still misses, do the following.
1. Engine off
2. Mark the ignition wires so that you reconnect them later in the same order
3. Locate the coil which gives spark for cyl 1
4. Switch locations of this coil with any of the two remaining coils
5. Reconnect the wires
6. Start the engine

If it now misses on another cylinder, you will have to buy a new coil.

Dec 05, 2013 | 2002 Buick LeSabre

1 Answer

Missing problem


Missing problem requires to check the following systems and components:
1. Fuel system. (Fuel pump, fuel filter, fuel injectors).
2. Ignition system. (Spark plugs, spark plug cords or wires, ignition coil, distributor (cars with distributor type ignition system, rotor, distributor cap, ignition amplifier), Coils On Plugs (COP) and correct sequence of the spark plug wires and or Igniter connectors.
3. Air leakage in the intake manifold.
4. Detached vacuum hose.
5. PCV Valve.
6. Servo brake booster pipe or diaphragm.
7. Valve clearance.
8. Cylinder compression.
9. Contaminated fuel.
10 . ECM.

Oct 06, 2013 | Toyota Corolla Cars & Trucks

1 Answer

Change spark plugs


  1. Disconnect the spark plug wire at each spark plug.
    • Twist each spark plug 1/2 turn.
    • Pull only on the boot in order to remove the wire from each spark plug.
  1. Disconnect the spark plug wire from the ignition coil.
    • Twist each spark plug boot 1/2 turn.
    • Pull only on the boot in order to remove the wires from the ignition coil
  • Install the spark plug wires at the ignition coil.
  • Install the spark plug wire to each spark plug.
  • Inspect the wires for proper installation:
  • Repeat above procedure for all 8 cylinders.
  • Jun 17, 2013 | 2003 Hummer H2

    3 Answers

    According to the obd code i am getting a misfire in the number one cyln and it kind of sputters what is causing it


    1. Bad or fouled Spark Plug at #1 Cylinder.
    2. Bad or misfiring Wire going from the #1 on the Distributor/Electronic Ignition Coil to the #1 Cylinder.
    3. Misfiring at the #1 on the Distributor/Electronic Iginition Coil.

    a. Unplug the #1 Wire at the #1 on the Distributor/Electronic Ignition Coil.
    b. Using an Auto electrical testing: Probe, wire and ground clip electrical, stick the Probe into the opening at the #1 Distributor/Electronic Ignition Coil. Use the grounding clip - clipped to a portion on the engine.
    c. Start the Vehicle and check for rhythmic spark.
    d. If there is NOT rhythmic spark, the Distributor/Electronic Ignition Coil needs to be replaced.
    e. Turn off the engine.
    f. If there is rhythmic spark: Reconnect the #1 Wire at #1 on the Distrubutor/Electronic Igntion Coil.
    g. Disconnect the #1 Wire from the #1 Spark Plug.
    h. Again using an Auto electrical testing: Probe, wire and ground clip. Insert the Probe into the end of the #1 Wire and clip the ground clip onto the engine.
    i. Start the engine again.
    j. Again Check for rhythmic spark.
    k. If there is NOT rhythmic spark the #1 Wire needs to be replaced. (Replace all Wires as a Set).
    l. If there is rhythmic spark then the #1 Wire is fine.
    m. Turn off the engine,
    n. Remove and Inspect the #1 Spark Plug. Clean if necessary and Regap.
    o. Reinstall the Spark Plug and reconnect the #1 Wire.
    p. Restart the engine.
    q, If the code reappears:
    r. Replace all the Spark Plugs.
    Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.Com.

    Feb 09, 2010 | 2000 Lincoln Town Car

    1 Answer

    Tune up / does my car have wires or just spark plugs?


    No it does not have spark plug wire's, it only has ignition coil boots. Just replace spark plugs, if engine not running with a cylinder miss you'll be ok, if it is running with a cylinder miss you might want to check your ignition coil pack for spark.

    Jan 27, 2010 | 2003 Toyota Corolla

    2 Answers

    Miss fire in cylinder 1 and 4


    Problem could be as simple as a vacuum leak around either of those cylinders. A vacuum leak can create a lean fuel mixure condition resulting in a miss fire. One thing to rememeber is that depending on the style of ignition in use. The opposing cylinder's spark plug and wires act as the return path for the unused voltage from the coils firing which is why you are having seemingly unrelated misfires. If either has a problem then the symptoms are shown in both cylinders.

    Apr 23, 2009 | 2000 Ford Mustang

    1 Answer

    Timing the cams and crank with a belt


    1. Note: Electronic Ignition engine timing is entirely controlled by the PCM. Electronic Ignition engine timing is NOT adjustable. Do not attempt to check base timing. You will receive false readings.

    The CKP sensor is used to indicate crankshaft position and speed by sensing a missing tooth on a pulse wheel mounted to the crankshaft. The CMP sensor is used by the COP Integrated EI System to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
    1. The PCM uses the CKP signal to calculate a spark target and then fires the coil pack(s) to that target shown in Figure 51. The PCM uses the CMP sensor not shown in Figure 51 on COP Integrated EI Systems to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
    1. The coils and coil packs receive their signal from the PCM to fire at a calculated spark target. Each coil within the pack fires two spark plugs at the same time. The plugs are paired so that as one fires during the compression stroke the other fires during the exhaust stroke. The next time the coil is fired the situation is reversed. The COP system fires only one spark plug per coil and only on the compression stroke.

      The PCM acts as an electronic switch to ground in the coil primary circuit. When the switch is closed, battery positive voltage (B+) applied to the coil primary circuit builds a magnetic field around the primary coil. When the switch opens, the power is interrupted and the primary field collapses inducing the high voltage in the secondary coil windings and the spark plug is fired. A kickback voltage spike occurs when the primary field collapses. The PCM uses this voltage spike to generate an Ignition Diagnostic Monitor (IDM) signal. IDM communicates information by pulsewidth modulation in the PCM.
    1. The PCM processes the CKP signal and uses it to drive the tachometer as the Clean Tach Out (CTO) signal.

    2.5L V6

    The ignition system consists of an ignition coil, spark plug wires and spark plugs.
    The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by a pulse former within the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
    Ignition timing is determined by the powertrain control module in response to engine operating conditions based on stored data tables or maps. Once ignition timing has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
    The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 5, cylinders 4 and 3 and cylinders 2 and 6) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This ensures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
    ---------------------------------------------------------------
    2.0L 4 cynder

    The ignition system consists of an ignition coil, spark plug wires and spark plugs.
    The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
    Ignition angle is determined by the powertrain control module in response to engine operating conditions. Once ignition angle has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
    The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 4 and cylinders 3 and 2) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This make sures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
    ------------------------------------------------------------------------------------
    Integrated Electronic Ignition System The Integrated Electronic Ignition (EI) System consists of a crankshaft position (CKP) sensor, coil pack(s), connecting wiring, and PCM. The Coil On Plug (COP) Integrated EI System uses a separate coil for each spark plug and each coil is mounted directly onto the plug. The COP Integrated EI System eliminates the need for spark plug wires but does require input from the camshaft position (CMP) sensor.
    ----------------------------------------------------------------------------------------

    Apr 05, 2009 | 1998 Ford Contour

    1 Answer

    1998 Cavalier No Spark in cylinders 1 & 4


    ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

    Jan 13, 2009 | 1998 Chevrolet Cavalier

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