How to reset check engine light 1988 buick 3.8

A backfire in the exhaust system is usually the result of a rich mixture ( too much fuel ) being supplied to the engine. It can also be a result of a timing/ignition problem. Does the vehicle run ok at idle? Is the check engine light on? If so, have the codes scanned for any problem areas that may be causing a rich mixture

Does it seem to do it more once it runs for a bit? It could be a bad DIS module. They are known to fail once they get hot. Either that or the ignition switch located at the top of the base of the column.

ck fuzes brake lite switch shood have power on one side mash brakes shood be other side

You have to reset the check engine oil level light. The light is just a 3 month reminder that lets you know when to change your oil. You have to hold the reset button on your dash for more then 5 to 10 sec. The procedure is in the owners manual that came with the car.

You didn't post your engine size so please pick the correct one:



3.8L (VIN B and 3) Engines Firing Order: 1-6-5-4-3-2 Distributorless Ignition System



3.8L (VIN C, 1, L and K) Engines Firing Order: 1-6-5-4-3-2 Distributorless Ignition System



Buick-built 231, 252 V6Engine firing order: 1-6-5-4-3-2Distributor rotation: Clockwise



Olds-built 260, 307, 350, 400, 403, 455 V8Pontiac-built 265, 301, 350, 400, 455 V8Engine Firing Order: 1-8-4-3-6-5-7-2Distributor rotation: Counter-clockwise



Buick-built 350 V8Firing order: 1-8-4-3-6-5-7-2Distributor rotation: Clockwise



Chevrolet-built 267, 305, 350 V8Firing Order: 1-8-4-3-6-5-7-2Distributor rotation: clockwise



Chevrolet-built 262Firing order: 1-6-5-4-3-2Distributor rotation: clockwise

Check the fuel pressure,it is the fuel filter,or the fuel pump,most likely.

For 3.8L
Firing Order:
1-6-5-4-3-2
Cylinders:
(back of engine)
2-------4--------6
1-------3--------5
(front of engine)
Ignition Connectors: there is 3-official options:
Type I:
(back)
6...2...4
3...5...1
(front)
Type II: There are two (2) official layouts for this:
..........(back)
|.6..3.|.|.2..5.|.|.1..4.|
..........(front)
............OR
..........(back)
|.3..6.|.|.5..2.|.|.4..1.|
..........(front)

Let me know if this helped, or if you have additional information or questions.

your computer has a code

One way that always works is to disconnect the battery for at least ten minutes. If the cause of the check engine light turning on in the first place is not fixed, then the light will come on again pretty quickly after starting the car.
To reset your service light here are the steps.

1. Get in your car and shut the door.
2. Put your key in the ignition
3. Turn your ignition key to position 1
4. Push in your Odometer reset button and hold it in while holding it move the ignition key to position 2 while holding down the odometer reset button.
5. After couple of seconds of holding the button down and the key in position 2 your service light will start to blink once that happens let go of the reset button and start the car.

wow thermostat >>>> shucks i believe its evep emissions code like faulty gas cap ....you can reset any computer the chck eng light will come on in 50 to 100 miles if not fixed....