Question about 1998 Lexus LS 400

1 Answer

When i remove any spark plug wires on the driver's side from the coil the engine does not slow down but in doing the same on the passanger side the engine almost stops.

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  • dmo1956 Jun 27, 2009

    the car is under power on take off. it is very slow getting up to speed

  • dmo1956 Jun 27, 2009

    very slow on take off build speed slowly idle is around 600rpm.

  • dmo1956 Jun 28, 2009

    when i remove the coil wire on the driver side it does not make any difference in engine. I think it is called the secondard coil. if i remove the coil wire on the passenger side it makes a great difference in the engine I have replaced the ingintion wires and spak plugs .

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  • Lexus Master
  • 2,200 Answers

Hi,

Before I provide any further feedback on this issue can you clarify the symptoms of the current running problem with the engine. Is the car low on power, missing, running poorly under normal driving conditions etc ?

Posted on Jun 27, 2009

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  • Radio Code Pro
    Radio Code Pro Jun 27, 2009

    Please use the comment button to clarify the issues. Thank You.

  • Radio Code Pro
    Radio Code Pro Jun 27, 2009

    Ok. It this definitely sounds like an electrical issue. It sounds as if the engine is only partfiring on some of the cylinders. This explains why the engine dies - when you remove the leads from the functioning cylinders you get this effect. When you remove the leads from the non functioning cylinders there is no effect because they are already non functioning - leads or no leads.



    This can be caused by



    a) faulty coil



    b) faulty plugs on that side of engine



    c) faulty plug leads



    Can you clarify exactly how many leads there is no effect when you remove them? Are you referring to the HT leads i.e one lead going to a coil on each side of the car?

  • Radio Code Pro
    Radio Code Pro Jun 29, 2009

    Ok if you have replace both coil wires already and also replaced all of the sparkplugs in the engine then you have a faulty coil.



    The coil that is faulty is the drivers side coil. You will need to replace it.



    Hope this helps. Please rate my answers accordingly.



    Thank you.

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Replace spark plugs in 1997 4 cyl. ford ranger


Hello, I will suggest you get these few tools before you with the replacement.
(1) Spark plug socket with rubber insert to hold plugs in place while inserting & removing.(2) 6inch extensions for your 3/8ths inch socket wrench,(1) Swivle Socket extension for your 3/8ths inch socket wrench.(1) 1/2inch socket for exhaust manifold screws. A little quantity of anti-sieze for the spark pluggs to be applied to the pluggs if they are proving difficult to get out.
Start with the 1st cylinder at the front of the engine on the passanger side.
STEP 1.
Twist & remove the spark plug boot from the existing plug.
STEP 2.
You have to use a very small flat edged screwdriver to open the clips that hold the plug wires together.
STEP 3.
Use a 6" extension & a 3" extension & your deep socket for the spark plug.
STEP 4.
Remove the first plug and replace the old plug with a new Bosch Platinum Plus 2 prong plug and use some anti-seize on the threads and tighten to the appropriate torque.
STEP 5.
Remove the old plug wire from the coil pack. It will be going to the 2nd coil pack (located to the rear of the first coil pack) and install the new plug wire in the coil pack.
STEP 6
Repeat steps 1-7 for plugs on 2 & 3.
STEP 7.
To remove Plug #4 which is the last plug on the passanger side,you have to remove the two (2) 1/2inch bolts that holds a bracket to the exhaust manifold. Make sure you spray the studs these bolts are on with some DW-40 or liquid wrench. The exhaust manifold studs might have a lot of rust & being difficult to turn nuts off without shearing off the stud. It has some sort of aluminum box ontop of this bracket with some sensor wires coming out of it, Slip the bracket off and simply lay it to the rear of the engine to provide better access to this last cylinder.

STEP 8.
Repeat steps 1-7 for plug #4 and then Remount bracket containing the aluminum box with sensor wires.

Upon completion of the passenger side,you now have to proceed to the driver side.
STEP 1. The first cylinder at the front of the engine the spark plug wire has a grey handle sticking up next to the A/C compressor. Using some pliers (needle nose plier) twist & pull this grey handle. The spark plug boot should pop out.

STEP 2.
With the help of the small flat edged screw driver, unhook the spark plug wire clips that hold the wires together. There are 3 - One just after the 1st coil pack located at the front of the engine, another just on the other side of the valve cover and a small 2 clip located about 1/2 way back on the valve cover under the intake manifold.
STEP 3.
Remove the spark plug wire from Cylinder #1 on the Drivers side
STEP 4.With the help of the small flat edged screw driver,press the 4 connection points on the grey handle that is attached to the wire,it will separate down the middle and allow you to remove the wire, Replace the wire with the new wire,you have to ensure you line up the rubber round plugs with the round holes in this grey handle & snap it back together with the new wire in place.

STEP 5.
Hold the spark plug socket in your left hand down near the plug,feed a 6" inch extension below the A/C Compressor line (black pipe) and the A/C Compressor with your right hand and attach the spark plug socket into the extension.
STEP 6.Slip the socket onto the plug,afterwards,attach an additional 3 or 6 inch extension to the existing extension & attach your socket wrench.
STEP 7.Remove the plug & proceed to replace it with a Bosch Platinum plug & anti-seize on the threads. Feed the new Spark Plug wire over to the 1st coil pack & replace it on the coil pack.

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Replacing spark plug wires for 2003 Buick Rendezvous


The front bank of plug wire is easy just remove them one at a time and trace them back to the coil pack. making sure you put them back in there clip harness. The rear bank of plug wire is much harder In the shop we have a tool the titls the engine a little foward and allows you to reach in over or around the engine to gain access to the rear bank of spark plug wire . this tool is sold by OTC , Snap on , Matco , Mac or you might try your local parts store to see if they have one for loan or rent . the firing order on your buick is coil nearest the drive side is 1/4 middle coil is 3/6 and the end coil nearest the passanger side is 2/5

passanger side l----l l----l l----l drivers side
2 5 3 6 4 1


front of truck
images?q=tbn:and9gcre0cc7dzsbbxxwaf8zy09qbxhdvsziswoemg1yft_nx-ylsoi_4w this is the firing order for a 3.4 v6 vin e

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Describe your how fix my pontiac 2000 montana Problem changing spark plugs



Inspection

Inspect for the correct routing of the spark plug wires. Improper routing may cause cross-firing. Inspect each wire for any signs of cranks or splits in the wire. Inspect each plug wire boot for tearing, piercing, arcing, carbon tracking or a corroded terminal.
If there is any corrosion, carbon tracking or arcing indicated on a plug wire boot or terminal, both the plug wire and component it was connected to should be replaced.


Removal & Installation

3.5L Engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the left side spark plug wires from the spark plugs.
  3. Remove the left side plug wires from the retaining clips.
  4. Rotate the engine for access as follows:
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    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. Remove the right side spark plug wires from the spark plugs.
  6. Remove the plug wires from the retaining clip.
  7. Remove the spark wires from the ignition coils.
  8. Remove the plug wire assembly from the engine.
    NOTE If you are replacing the spark plug wires, the spark plug wire conduit and retaining clips should be transferred to the replacement wires.

To install:
  1. Install the right side plug wires to the ignition coils and then the spark plugs.
  2. Install the spark plug wires to the retaining clip.
  3. Rotate the engine back to the original position.
  4. Install the left side spark plug wires to the ignition coils and then to the spark plugs.
  5. Install the spark plug wires to the retaining clips.

3.9L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the intake manifold cover.
  3. Remove the left side spark plug wires as follows:
    1. Disconnect the left side spark plug wires from the spark plugs.
    2. Disconnect the left side spark plug wires from the ignition coil.
    3. Remove the left side spark plug wire clips from the intake manifold and heater inlet and outlet pipe.
    4. Remove the left side spark plug wire assembly.

  4. If removing the right side spark plug wires, the engine must be rotated for access as follows:
    1. Set the parking brake.
    2. Shift the transaxle into neutral.
    3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
    4. Install the Engine Tilt Strap J-41131.
    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. After rotating the engine, remove the right side spark plug wires as follows:
    1. Disconnect the right side spark plug wires from the spark plugs and ignition coil.

  6. Remove the right side spark plug wire clip from the ignition coil bracket.
  7. Remove the right side spark plug wire assembly.

To install:
  1. Install the spark plug wire assembly.
  2. Install the right side spark plug wire clip at the ignition coil bracket.
  3. Connect the plug wires to the ignition coil and spark plugs.
  4. If the engine was rotated for access, return the engine to the original position.
  5. The remainder of the installation is the reverse order of removal.

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I need the diagram to put the spark plug cables


2003 Chevrolet Malibu 3.1L SFI OHV 6cyl
Spark Plug Wires - Removal & Installation

3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
    NOTE Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.
  2. Remove the intake manifold cover, if required.
  3. Disconnect the left side spark plug wires from the spark plugs.
  4. Disconnect the left side spark plug wires from the ignition coil.
  5. Remove the spark plug wire clips from the Manifold Absolute Pressure (MAP) sensor bracket and the heater inlet and outlet pipe tab.
  6. Remove the spark plug wire assembly.
  7. If replacing only one plug wire, open the retaining clips and remove the appropriate spark plug wire.
  8. Disconnect the right side spark plug wires from the spark plugs.
  9. Disconnect the right side spark plugs from the ignition coils.
  10. Remove the spark plug wire assembly.
  11. If replacing only one plug wire, open the retaining clip and remove the appropriate spark plug wire.
To install:
  1. Install the spark plug wire assembly.
  2. Connect the right side spark plugs to the ignition coils.
  3. Connect the right side spark plug wires to the spark plugs.
  4. If replacing only one plug wire, open the retaining clip and install the appropriate spark plug wire.
  5. Install the spark plug wire assembly.
  6. Connect the left side spark plug wires to the spark plugs.
  7. Connect the left side spark plug wires to the ignition coil.
  8. Install the spark plug wire clips to the MAP sensor bracket and the heater inlet and outlet pipe tab.
  9. If replacing only one plug wire, open the retaining clips and install the appropriate spark plug wire.
  10. Install the intake manifold cover, if required.

Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system
74d742b.jpg


Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
306b531.jpg


Fig. 3.5L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
9313fa7.jpg


Fig. 2.4L Engine Firing order: 1-3-4-2 Distributorless ignition system
2c9af72.jpg


Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system
d929c16.jpg


Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system
f357cd3.jpg

Fig. 3.5L & 3.9L Engines Firing order: 1-2-3-4-5-6 Distributorless ignition system
09e9db9.jpg

I really hope help you with this (remember rated this help) Good luck.

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OK.. I hope this help on your problem.
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