Question about 1984 Ford Mustang

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How to set idle for 1984 mustang 3.8L, 6cyl

Car wont stay on/have messed with idle. how do i reset idle?

Posted by sandy ruiz on


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Technically the idle speed is not adjustable. The computer controls idle speed with the idle speed control motor.
Base idle is around 500 RPM with normal idle in park at 800.

Posted on Aug 18, 2012


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SOURCE: 96 mustang wont stay runnin

check/replace your idle air control valve.

Posted on Apr 26, 2011


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use a multi volt meter and check the reading on your tpi throttle position sensor it could be out of adjustment and also check your idle air solenoid and check the egr valve to make sure its not sticking.most likely one of the can find the volt setting for the throttle position sensor on you tube as well.hope this helps

Mar 25, 2014 | 1995 Ford Mustang

1 Answer

Need to set idle on 1984 carburator 3.8L

try to advance the timing a little!
with the distributer. 1 deg. should be good. get a timing light

Aug 17, 2012 | 1984 Ford Mustang

2 Answers

*UPDATE* 1984 Mustang Won't stay running


You need to check if the Idle control jets are set properly, these are the 2 screws near the base plate on this type of carburettor.

Screw them fully in, then on the primary side screw it out 2.5 turns.
On the secondary side screw this out 1.75 turns. This should get your idle up.

If this dosn't work then you have got problems with the idle jet system which means you need to pull the emulsion tubes out and jets out to clean them.

Also check that your Idle screw is screwed in enough to allow the throttle to be open enough to idle.

Hope this helps



Jul 15, 2010 | 1984 Ford Mustang

1 Answer

The 1984 Toyota 4x4 pickup truck will not idle

On a 1984 Toyota I would look for a screw to set the low speed idle on the carburetor, if so equipped. Turn the screw until the RPMs are reasonable.

If you can maintain a smooth idle by adjusting the screw your home free.

If not, then there could be other problems with your vehicle's emission, ignition, comprression, or fuel.

Jul 07, 2010 | 1984 Toyota Pickup Deluxe

1 Answer

1984 mustang overheats

You need to describe a bit more about the problem. How fast does it heat up? Does it only overheat when you are at idle or when driving? Any recent work done to the car.
Engine size?

May 16, 2010 | 1984 Ford Mustang

1 Answer

I put a new starter on a 1984 mustang i bought and solenoid but it cranks and wont turn over.

sounds like a fuel problem.

ensure there is gas and check to see in the fuel pump is working.

but your problem is deffiniately in the fuel system!

Feb 26, 2010 | 1984 Ford Mustang

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