Top 10 1991 Chevrolet S-10 Questions & Answers

There is a vaccuum operated switch located on the transfer case that sends vaccum to the accuator that pulls a cable that locks the front end in. Check for vac coming in and out of this switch if no vac out replace it. This switch is a very common problem. You can find them at most parts stores in the help section #49315. please rate.

check the fuses, mine did the same thing, I replaced the fuse in the fuse panel and it works great now.. easy fix

problem is in replacement of O2 senser try again to put it.
take a help from a link>>

http://www.popularmechanics.com/automotive/how_to/4219927.html?page=2

happy to help u any time.
Thanks for using FixYa.

It really depends on the type and model of your radio. Below is the generic clock set proceedure for the most popular radio at that time.
Hope this works for you.
Regards,

To set the clock, just:
Press the SET button. The word SET will light up in the VF display.
Within 5 seconds, press and hold the SEEK button until the correct hour
appears on the display.
Then, press and hold the SCAN button until the correct minute appears
After you set the time, the word SET will remain in the VF display for a
on the display.
few seconds.

firing order 1342, distributor, clockwise rotation.

991 Chevy S10 firing order
The firing order for a Chevy s10 depends on which engine you have.
1.9L engine the firing order is: 1-3-4-2 . Distributor rotates counterclockwise.
2.0L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise.
2.5L engine the firing order is: 1-3-4-2 . Distributor rotates clockwise.
2.8L engine the firing order is: 1-2-3-4-5-6 . Distributor rotates clockwise.
4.3L engine the firing order is: 1-6-5-4-3-2 . Distributor rotates clockwise.

For the 1991 Chevrolet S10 Blazer 4.3 V6, Both: 2WD AND 4WD:

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

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

Distributor:
....(back)
(+).4...3
5...........2
..6...1..(+)-screw
.....(front)

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

Here is the firing order diagram for that vehicle and engine.

Mine is a 4 cyl & its 65k.. 94,,,,

I have a 93 s-10...think its the same...disconnect the neg terminal of the battery first...then crawl under the vehicle and look up near where the transmission and the engine connect together..on the passenger side should be the starter..there are two bolts holding the starter in...if you have enough room try to remove the positive battery cable first from the starter before trying to remove the mounting bolts..there should be a small wire that goes to the trigger lead on th solenoid...be sure to note where it goes..as this is the lead that hooks to the ignition switch to crank the starter