My car has a 2100 rpm idle.. Ill make this short and simple.. What is causing this high of a idle? I know it can't be anything small.. Because then it would be at like 1300 or so.. If it isn't a vacuum leak then what is it?

Ill make myself feel like a total dumbass right now because the idle was fine until i started messing around with all the hoses and stuff.. Maybe i could have put a hose in the wrong place? LMK some main places to check out.. maybe even some pictures of a carb'd 305 engine

 

Does it have ac? check the fast idle solenoid operation

 

vac line to the map sensor maybe

 

Wheres that at? That could be a problem actually.. I have 2 small tubes that have no connection..

I dont have an AC in this car.

 

firewall, near the heater box, on the passenger side...... some should have a pic and if needed i can find the vac line diagram

 

Yep.. Thats where 1 of the disconnected tubes are.. If you can get a picture.. that would be awesome

 

chack and make sure all of those stupid hard plastic vaccum lines are still good too, those things are notorious for becoming prittle and breaking.

 

ok im guessing and hope you have a carb motor, and not CFI

take the air cleaner off, look on the very back of the carb, you will see a small vac port (port "N" according to the book) run a line from it to the vac sensor (im sorry it looks like its on the left side in my book, sorry i said right ealier

check all your other ports, if they dont have a line hooked up plug em, or fix em,there is a total of 5 ports on the front it look like

look under the hood their may still be a emission hose routing sticker under there use it to help

 

Yeah.. Its carb'd

I went over everything today and got the idle down to about 1500 from the 2100 before.. Looks like im doing something right. lol.

Maybe i should mess around with the idle screw? I dont know where it is though. lol.

 

its got a plug that covers it, look where the screw is (the threded part that touches the throttle linkage) if you look where the head should be you will see an indention, use a center punch, wack it with a hammer and then pry it out, then you go access to the idle screw


you may have a few more vac leaks causing it to idle high, i would check all vac lines

 

Ill check it out when i get some sunlight.

What are the main vacuum lines? ill probably have to check them out and see whats up

 

Its going to hard to explain this.. ill take a pic tomorrow but.. I have 2 of these little tiny tiny tubes that have a 3-4 inch rubber tubing at the ends.. They are both free and i dont know where they go.. They are like little tiny plastic tubes. That could probably be a problem too. I got 1 going into the egr valve thats the same type and goes into the same place

 

yea i will post a pic to help as soon as i can

 

hope this helps