When I have it on it stays on high idle speed. When I push the auto idle it will not change the speed to normal. It idles at high speed all time.

replace the idle control module

The higher idle speed is part of the "cold start" sequence. It is controlled by the thermostat and a temperature sensor. You may need to change them both for faster action.

Hi Alexandra, Im AL the owner of Big As Auto Repair

There are several things that can cause high idle, but the 2 most common problems are as follows.

(1) You could have a vacuum leak somewhere on the engine. Here is how to check for that issue. Here's what I want you to do: Buy a can of CARB Cleaner and while the engine is running spray around the Intake Manifold, the manifold is the thing the throttle body sit on. Also spray around all the vacuum line as well. If while spraying there is a change in the idle speed then you have found your leak. If there is no change then move on to step 2.

(2) Sometimes when you have a high mileage vehicle parts begin to ware out or can also begin to stick in place. Here something you can check. Idle Air Control Motors can start sticking from corrosion build up and can cause a high idle issue. Here what I want you to do. Start the engine and let it idle, while its idling I want you to tap on the Idle Air Control Motor If it idles down to normal idle speed replace the motor. The motor mounts onto the throttle body and most of them are round. Once you replace it and start the engine you'll notice that its idling real high, :This Is Normal, just let it idle until the engine controller resets the idle speed to normal.

Hope this helps and should you need further help please visit my auto repair website. http://www.bigasautorepair.com/

you need to adjust the high idle screw on the carburator

Normally the engine has to idle faster because of the extra load of the brake lights when you press on the brakes.. Sounds like your idle speed is a little high. Have someone set your idle speed properly.

Hope this helps you


this is free help...Please take time to rate me

Replace the idle speed control valve.Very common on fords this fails.And what you are telling me are the same symtoms.Good luck m8.

Yes that is most likely normal for your car. But there you could be other factors playing into the potential high idle, for example if your timing is off the computer could be compensating by advancing spark. When was your last tune up done?

The problem is an air leak leaning the fuel mix. The idle speed starts going up a ramp until it is wide open. The valves no longer seating well is a possible cause as is carb manifold gaskets, rings and a cylinder head not torqued down tight.

Check your Ignition timing before anything
check your plugs see what color they are
red or orange means carb is to lean , black
or oil means to rich then you can go from there
and set mixture screws on carb , let me no how you make out .

hi how are you. your auto choke is bad will need to replace.depending on wich one you have it may only be the vacume choke diafram ( high idle cut off). or it is the electric choke