Firing order for coil packs for 1999 Chevrolet venture

The firing order is 1-2-3-4-5-6
Cyl #1 is front left when looking at engine front to back
left coil pack connects to cyls. 5-2
center coil pack connects to cyls. 3-6
right coil pack connects to cyls. 4-1
It doesn't matter which connector on the coil you use just that the cylinder is connected to the proper coil pack (the coil fires both plugs at the same time, twice per each full 4 stroke cycle)
1998 Chevrolet Lumina
3.1 liter V-6 VIN "M"

Yes if that plug he left in was bad or worse yet, if that plug that wasn't changed is actually missing. You need to check that all the plugs are actually installed first and also that the Spark plug wires are actually seated on each plug completely. Unfortunately a lot of "Shadetree" mechanics make the mistake of pulling on the wire itself to get them free and as a result damage the wires causing this problem. Another possibility is he has the coil wire loose or damaged or the firing order mixed up. The firing order is usually stamped on the intake manifold near where the air intake or carb are mounted to the manifold. The Distributor cap should have a mark indicating the number 1 position and the rest follow in clockwise fashion. The problem is this is the time frame that Chevy was switching between Distributors and Coil packs which are commonly square and a little more difficult to identify the actual position on. If you suspect the firing order and want to be sure beyond a doubt about what it is and which is which on a Coil pack I recommend you get a Haynes or Chilton's manual on your vehicle from Auto Zone or Advance Auto parts store, other Auto parts stores carry them as well anywhere from $12 to $20 dollars depending on your area.

Not sure if its a 3.1 or a 3.4 litre , but the coil should have numbers on it , and number 1 cylinder is the furthest to front of motor, I belive that will be by the fire wall closest to the passenger side of vehicle. !,@, and 3 against firewall and 4,5, and 6 in front bank near radiator .

incorrect firing order for the plug leads
low fuel pressure

Hello larrybaggio: My name is Roger and I will help you. The fire order is 1-2-3-4-5-6. I also attached a diagram of the wire placement on the coils. Should you need further help please just ask. Please rate the answer provided. Thank You for using Fix Ya. Roger

firing order for 3.1 lumina 1994 ans older with coil pack under exhoust monifold firing order is 146325
for 3.1 lumina 95 and newer with coil pack on top of engine firing order is 523641

For the 2000 Chevrolet Venture 3.4L V6:

Firing Order:
1-2-3-4-5-6

Cylinders:
.......(back).......
|...1....3....5...|
.......................
|...2....4....6...|
......(front)

Coil Connections:
.............(back)
..|.5..2.|..|.3..6.|..|.4..1.|
.............(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

The ignition module is located right below the coil packs toward the back of the engine. The coil packs are bolted to it. Many auto parts can test these for once they have been removed.

The firing order is 1,2,3,4,5,6.The front plugs are 2,4,6 and the rear are 1,3,5.The coils are numbered if they are the factory coils.They will be 5-2,6-3,1-4.Hope this helps.Good luck.

check fuel pump