High 2k idle(1988 Mustang GT 5.0 non maf)

[BurtHurts75]

Ive been scouring the internet to look for this issue, my mustang is idling at 2k rpm

Ive replaced the iac and tps and set them correctly, aswell as setting the idle screw and nothing has changed still idles at 2k

Came to get some help on what this issue could be

(BONE STOCK 88 Mustang GT 5.0)

 

[General karthief]

How long have you owned it?
The vast majority of high idle issues are vacuum related, more so with speed density computers.

 

[Mcmahst]

Maybe check the vacuum at idle?

 

[BurtHurts75]

How long have you owned it?
The vast majority of high idle issues are vacuum related, more so with speed density computers.

Owned it for about 5 years myself bought it off my grandad. Ill try checking the vacum when I get the time

 

[General karthief]

Pull the upper intake off, I bet a vacuum line is broken under there.
Check them all.

 

[BurtHurts75]

Pull the upper intake off, I bet a vacuum line is broken under there.
Check them all.

Got it thank you