Hey guys, sorry its been awhile, but here's the deal, my truck, 1984 Ford Ranger 2.3L 4cylinder is having an EXTREMELY high idle, how do i lower this? please put it in terms a 19 year old with very little experience would understand lol

 

36 views and no response, maybe Ranger Station has a clue. I don't have a service manual for a 1984 Ranger. If you're a beginner I suggest you invest in one in order to save.

 

Is this problem that happened all at once or did it develop gradually over time? Did you, or someone else, do some work on your engine?
If I recall correctly, your engine has a carburetor. There are adjustments to it that can be made to reduce idle speed. A service manual, either Haynes or Chilton, should provide instructions on how to adjust the carb.

Do you know some one who is a mechanic that would help you deal with this problem. Given the age of your truck, you may have a dirty card. A fuel cleaner such as Techron, added to the gas tank may solve your problem.

 

With the vintage of your ride, it could be a number of things, as the guys have mentioned.

If it happened suddenly, maybe a loose, or dyrotted vacuum line, or vacuum operated accessory like the brake booster, in cabin heater/ac control, ect, would be good suspects.

If it's happened slowly over time & your not up to date on scheduled maintenance, maybe something like a clogged up stuck open PCV valve, or it's dryrotted rubber connection hose, varnished up sticking throttle plate, or binding throttle cable or linkage are some other things that come to mind for your suspect list.

As has been said, more clues, like how & when this began would be helpful to know.

If you have a family menber, neighbor, buddy, ect, that are known as good wrench turners, along with investing in a good repair guide, or one that you might find & check out at your local library, might help.

OR, if you have an auto vocational shop at school, or the loacal community collage, bet the instructor would like to have his class have a chance to apply/put their learned trouble shooting techniques to work, in diagnosing your problem & it would be supervised by a pro & likely be done right, at little or no cost.

Give us some more clues & maybe we can help you narrow it down some more & help you in beginning to learn how to diagnose a problem & turn your own wrenches if thats what you want to do.

It can be fun & save you a bunch of money over your lifetime!!!!

More thoughts for consideration.

 

I fixed the problem, i turned the screw down and it runs ALOT better now, buying a Haynes repair guide tomorrow, and I must say, this forum is awesome, you guys do a pretty good job at helping me out!

 

The 83-85 4cyl Rangers are very simple.......no TFI or feedback carbs, simple dura spark ign. I would be looking for binding of the throttle linkage at the carb., something physically stopping the throttle from coming back to curb idle, a big vacuum leak, or possibly a prev. owner has messed with the idle speed adjustment screw.