Need electrical wiring diagram for 1991 lumina car, 3.1 engine

1991 Chevrolet Lumina Workshop Service Repair Manual
Hi, try out this website it's really good to help you solve such repair problems easily and without help

THE TIMING MARKS ARE ON THE HARMONIC BALANCER WHEEL.

2000 Chevrolet Lumina 3.1 liter V-6 VIN "J"




Hope helps.

REMOVAL AND INSTALLATION
3.1L Engine
Besides regular hand tools, a special oil pressure sensor socket will be necessary to complete this operation.

1. Disconnect the negative battery cable.
2. Raise and support the vehicle safely.
3. Remove the A/C compressor brace (if equipped).
4. Extract the wiring harness from the retainer and position it out of the way.
5. Remove the cover from the starter wiring.
6. Remove the outer nut and disengage the wiring from the starter solenoid.
7. Disconnect the electrical connector from the oil pressure gauge sensor.
8. Using the special socket, remove the oil pressure gauge sensor.
9. Unbolt the starter from the engine. Retain any shims.

To install:

1. Install the starter to the engine, reuse any shims that were removed. Tighten to 32 ft. lbs. (43 Nm).
2. Connect the wiring to the solenoid and install the outer nut.
3. Place the cover over the starter wiring.
4. Replace the oil pressure gauge sensor using the special socket.
5. Plug the electrical connector onto the sensor.
6. Mount the harness to the retainer.
7. Install the A/C compressor brace (if equipped).
8. Lower the vehicle.
9. Connect the negative battery cable.

tuneup the engine. replace plugs, wires, oxygen sensor last. put fresh gas in and cruise on the highway.

If you are referring to a firing order diagram so that you can properly arrange your spark plug wires (ignition wires) then one of these diagrams should help out.

2.5 liter engine;



3.1 liter engine;



3.4 liter engine;


If this is not what you are looking for then you will need to be more specific as to exactly what wires that you are seeking information for.

http://www.mvreader.com/multiview/dayco/zoom.php?zoom_item=C0001J&l=&catalog=auto&category=2

The web link should take you to a diagram of the serpentine belt. Hope it helps!

Check www.autozone.com.

I believe you are mistaken, I own a 1992 Chevy lumina APV and it has a 3.8.