What is the firing order for a 1990 buick regal 3.1

theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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Firing order:
1 - 6 - 5 - 4 - 3 - 2.
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Spark plug wire location on coil pack:
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Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
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Spark plug wire location on engine:
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drivers side, front to back of car: 1 - 3 - 5.
passenger side, front to back of car: 2 - 4 - 6.
.----and this link shows the coil pack to cylinders
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3 8 Buick Turbo Engine Coil Pack Firing Order Spark Plug Wire Location

For 1999 Buick Regal 3.8 liter V-6 VIN "K" check this diagram...



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1995 Buick Regal 3.8 liter V-6 VIN "L"




1995 Buick Regal 3.1 liter V-6 VIN "M"




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1988 Buick Regal 2.8 liter V-6 VIN "W"



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1-6-5-4-3-2 is for the 3.8 liter engine
1-2-3-4-5-6 is for 3.1 liter engine

For the 3.8L:
Firing Order:
1-6-5-4-3-2

Cylinders:
(back of engine)
2--------4---------6
1--------3---------5
Ignition Connections:
(back)
___
o-<-----6
___
o-<-----3
o-<-----2
___
o-<-----5
o-<-----4
___
o-<------1

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Firing Order:
1-2-3-4-5-6
Cylinders:
1--3--5
2--4--6
(front of veh)
Distributor Connections:
1-4 6-3 2-5
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

The firing order is 1-6-5-4-3-2 and number 1 piston is front driver's side. On the distributor number 1 is at 9 o'clock and rotation is clockwise. Hope this helps.

Hi,
The firing order is 123456
1-3-5 is in back and 2-4-6 is in front.
Hope this helps...

replace the computer,i know its expensive but,those cars are notorios for tha problem.if all those other parts didnt fix it ,thats the only other possibiltie.