Question about 1996 GMC Sonoma

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How to wire the two coils to match the plugs?

I want to change the plug wires and am not sure how to know if it is properly wired now as it sounds like it is only firing on three cylinders. I changed the two coils and spark plugs. The wires are next.

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The plug wires are likely bad causing this problem

Posted on Jul 31, 2009

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My 98 for explorer runs bad after I changed the spark plugs an wires and fuel filter and coil what now

You'll need to double check each item you replaced one by one to find the cause. I recommend (In the future) to replace wires, start & check engine. Replace fuel filter, start & check, coil then star & check.
For wires, make sure you have wires going to correct locations, check for possible damage to spark plugs (Cracks or breaks), and good connections.
Fuel filter, make sure it's in proper orientation as to flow direction as seen on the arrow stamped on the side, showing flow direction. and make sure you are not leaking fuel anywhere.
Coil... Again, check connections and proper wiring.
You might also wish to check for proper "Hot" (Bright Blueish spark) at the plugs.. Wear heavy insulated gloves or use well insulated grips to hold plugs against engine block to view spark.
A dimer orange spark = bad connection or faulty wire.
Also if you have a manual, they usually have detailed troubleshoot guides.
Best of luck on a speedy diagnosis!

Jun 22, 2014 | 1998 Ford Explorer

2 Answers

How do I replace the ignition coil in my 2002 ford taurus

Removal & Installation

3.0L (VIN S) Engine

  1. Disconnect the negative battery cable.
  2. Unplug the engine control sensor wiring connectors from the ignition coil and the radio ignition interference capacitor.
  3. Tag and disconnect the spark plug wires from the coil by squeezing the locking tabs, then twist the tab and pull upwards.
  4. Unfasten the four ignition coil retainers and remove the coil and the coil ground wire the radio ignition interference capacitor. Save the capacitor and coil ground wire for re-installation of the coil assembly.
  5. Wipe the coil towers with a clean cloth dampened with soap and water. Remove any soap film and dry with compressed air. Inspect the coil for cracks, carbon tracking, dirt or damage and replace as necessary.

    0996b43f802333d8.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Ignition coil assembly mounting-3.0L DOHC engines

To install:
  1. Place the coil, capacitor and the coil ground wire onto its mounting location on the right hand valve cover.
  2. Install the coil assembly retainers and tighten to 45-61 inch lbs. (5-7 Nm)..
  3. Apply dielectric compound D7AZ-19A331-A or its equivalent to the spark plug wire boots.
  4. Attach the spark plug wires to their proper terminals on the coil and make sure the boots are firmly seated so that the locking tabs engage.
  5. Attach the engine control wiring connectors to the ignition coil and the radio ignition interference capacitor.
  6. Connect the negative battery cable, start the vehicle and check for proper operation.

Dec 19, 2010 | 2002 Ford Taurus

1 Answer

I would like to know the firing order of my 1995 chevy 3500 so I can change the spark plugs and cables

I could look it up for you, but it doesn't really matter.
The easiest way when replacing plugs and wires is to replace each wire and plug one by one. You can then make sure they are all routed correctly and held in by the proper clips. Make sure you match the length of the old wire to the new wire so everything lays correctly.

Dec 07, 2010 | Chevrolet 3500 Cars & Trucks

1 Answer

How do you change spark plug wires on a 96 Buick Century 4 cyl. the moter sits sydwase.

start at each plug located on the cyclinder sure to do ONE at a you do not affect the firing order...remove the wire from the plug first and trace to the coil connection...measure length using the new wires to match one by one...also be sure when re-installing that you use some of the connector lubricant to properly seal and service the fresh connections...this lubricant is inexpensive and usually recommended by your Parts Store staff...

Nov 19, 2010 | 1990 Buick Riviera

1 Answer

Change spark plugs

Remove the plug wires or coil on plug from the spark plug,
Remove the plugs.
Gap new plugs to spec and tighten to proper torque replace wires or coils.
You should put anti seize compound on the threads of the plugs
be sure the plug wires get put back on the corrrect plug

Oct 11, 2010 | 2001 Mercury Sable

1 Answer

There is a misfire in my engine, changed plugs & wires. now it reads that the fuel leveling sensor is bad, will this help?

If there is a misfire, the cylinder that it is misfiring in will be recorded as a code in the computer.

Have the car scanned to determine which cylinder is bad. Then, replace the coil pack going to that cylinder.

Ignition Coil Pack Removal & Installation 2V Engine To Remove:
  1. Twist the spark plug wires off of the ignition coil towers. Mark the spark plug wire positions so they can be installed in their original positions.
  2. Disconnect the electrical connector from the ignition coil. CAUTION
    When removing the spark plug wires, a slight twisting motion will break the seal and ease removal.

  3. Remove the mounting screws and remove the ignition coil.
To Install:
  1. Position the ignition coil pack on engine.
  2. Install mounting screws and torque to 53 in-lbs. (6 Nm). coilbolt.gif

  3. Connect ignition coil pack electrical connector.
  4. Match previously marked spark plug wires to ignition coil and install.
4V Engine To Remove:
  1. Remove the RH cowl grille cowlpic.gif
  2. Remove the screws and the water shield
  3. Mark spark plug wire positions
  4. Disconnect the spark plug wires from the ignition coil CAUTION
    When removing the spark plug wires a slight twisting motion will break the seal and ease removal.
  5. Disconnect the ignition coil electrical connector coilconn.gif

  6. Remove the mounting screws and remove the ignition coil
To Install:
  1. Position ignition coil pack. Install mounting screws and torque to 56 in-lbs. (6Nm)

  2. Connect ignition coil pack electrical connector
  3. Match previously marked spark plug wires to ignition coil and install
  4. Position water shield and install screws
  5. Install RH cowl panel
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Aug 11, 2010 | 2002 Ford Taurus

4 Answers

Changed spark plugs and it is missing more now than it was what could be the prlobem?

58887048nissan has a coil on plug design, double check that you installed the factory recommended plug. Check each coil for arching against the head by looking at it for little electrical burn marks. These cars are also know to have bad harness connector problems at the injectors and coil plugs. Also, using an ohm meter, check the resistance of your injectors. Thay may or may not be operating properly.10 - 14 Ohms.

May 31, 2010 | 1993 Nissan 300ZX

1 Answer

Spark plug wiring diagram

If u can't see the diagram go to the link, just match up the numbers on the coil to the engine cylinder numbers.


Apr 05, 2010 | 1997 Pontiac Trans Sport

2 Answers

2002 Ford Focus 2.0l SOHC running on 3 cylinders

I had this problem too exept I have no clue what parts or blah b;ah blah. I just know that my coil pack was getting fried.burnt out because my wires were bad. The mechanic I went to was a moron because I took the car to him 3 times and he kept saying it was the coil ad kept replacing it. I took it to my uncle and he said my wires were in horrible shape and when this is the problem it fries your coil making your car run like a lawn mower! Well all i did was replace my wires and the car ran great! Well I hope this helped..

Jan 13, 2009 | 2002 Ford SVT Focus

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