My idle just went..insane.

[Mywhite94]

Headin home from work the other day, and my 94 GT decided to now idle at about 3k spontaneously >< This is my first expedition into the world of computer controlled, SFI vehicles, everything else ive ever owned had carbs Im going to change the IAC first, it seems most likely to me. Has anyone else had this happen, and what fixed it for you? thanks in advance

 

[Michael Yount]

We could help more if we knew more about the vehicle - what make, model, year, engine......??? Sig with mods would be nice.

 

[Mywhite94]

course, was a little quick in my post i imagine 94 GT 5.0, mostly stock ( only had it a week ) CAI in it, but im very much doubting it has anything to do with this. Near as i can tell its down to a vaccum leak, ( checked, couldnt find one ) IAC, or computer ( really hope its nothing with that...) Was just looking for anyone who'd had the same experience, or anyone with a suggestion

 

[Michael Yount]

Always start by pulling the diagnostic codes out of the ecu. AutoZone or PepBoys will usually do it for free if you don't know how. WalMart usually sells a code scanner for about $20. Search for a post by Jrichker on the site - his sig has a link that tells how to pull the codes with a paper clip and a banana peel MacGyver style (seriously - you won't need a banana peel though).

When something goes totally whacky like your did - there'll almost always be a code that will point you in the right direction.

 

[dastang2]

does it stay there all the time now. i have a 95 and it backfired in the intake and melter the AIC valve open and would idle at 3000 and wouldn't go down. luckily i had a spare one and it fixed it.

 

[Mywhite94]

yeah, its stayin at about 3k rpms at idle. going to switch the IAC tomorrow, hopefully thatll do the trick