1997 S-10 Idles Rough

I Have Had Numerous Codes Come Up On This Truck. Now It Is Reading That The 4th Cylinder Is Mis-firing. I Now Have Power At Start Off And Thru All 5 Gears, But It Idles Rough

hey there i have a 1997 s-10 blazer with a 4.3 my service engine soon light came on and it said #4 missfire as well. I had a injector installed and it still came back on with a # 4 missfire. the engine does idles rough but on the open road its not noticeable . did you ever find out what was wrong with yours? thanks Brian

hey there i have a 1997 s-10 blazer with a 4.3 my service engine soon light came on and it said #4 missfire as well. I had a injector installed and it still came back on with a # 4 missfire. the engine does idles rough but on the open road its not noticeable . did you ever find out what was wrong with yours? thanks Brian

It's been a year and 8 months since the original post - and since his post count is 1, it's likely he will never see this and thus never respond.

I had a similar problem. I have rough idle when my air conditioner is on. Anyway! I pulled into McDonalds and my windows were fogged up/ I had my climate control on top vent. When I changed it from that setting to defrost my RPMs picked up, idle was much smoother. I know I now have a defective switch and need to make sure that when I turn of the air the compressor is disengaging. Weird thing about that was there was not cold air coming out of vents.:2cents:

I had a similar problem. I have rough idle when my air conditioner is on. Anyway! I pulled into McDonalds and my windows were fogged up/ I had my climate control on top vent. When I changed it from that setting to defrost my RPMs picked up, idle was much smoother. I know I now have a defective switch and need to make sure that when I turn of the air the compressor is disengaging. Weird thing about that was there was not cold air coming out of vents.:2cents:

This post is old and dead.:grinyes:
Always check the date on a post before posting to it.
Let old dogs sleep in peace.
If you wake up a sleeping dog you have a good chance of getting dog bite.:grinyes:

This post is old and dead.:grinyes:
Always check the date on a post before posting to it.
Let old dogs sleep in peace.
If you wake up a sleeping dog you have a good chance of getting dog bite.:grinyes:
:lol: ...thread locked