Uuuuhg! Idle issues after head gasket replaced

[99disc]

Hi to all,

I purchased a 99 disc 1 about 6 weeks ago. It ran great, idled beautifully then blew the head gasket. It was replaced and ran good except for idleing.
It would die if the accelerator wasnt being touched. On the highway it ran great. Replaced the IAC and it started and idles on its own, but now it runs around 1500rpm when idleing in park. When driving around it runs around 1000. It used to idle around 700 +/- 50. I have the 4.0 engine any help would be great. Is there anything else I can do other than have the car flashed (I think thats what it was called) and does anyone know what that costs. I have searched all vacuum hoses I could find and all the coil and wires appear to be hooked up good.

Thanks in advance for any help this is a great site, has helped with several smaller issues.

Mike

[afirover]

mike is it a gems ?
does it have a black plunim?
have you adjusted the throtle cable ?
all this info will help us help you faster
afi

[Rovin4life]

you need to set the iac turn screw, its underneath that little cap.

[biggdoggs1]

Originally Posted by Rovin4life

you need to set the iac turn screw, its underneath that little cap.

I as reading one of your responses, and I have a problem kind of the same, I bought a 1996 Disco, yesterday and it seemed to be running great!!, then I felt kind of a flutter in the idle that seemed to go away with a little more gas, I took it to town, and when I got back in it to go home, it was a little hard to start. When I got home I adjusted the throttle up, and now it does not die but the check engine light is on???

[99disc]

i have the black plenum, also i didnt think there was a idle adj screw