94atx RPM surge when stopped

[38SHO]

I have a 94atx. Just in the past couple days I have noticed that my car gets more throttle by its own when stopped at a light. You will see the RPM's shoot up to a good 1200-1400rpm... any thoughts on this?

cruise control fault? it doesn't even work should I just remove it? the cables going to the TB for that look pretty gnarly anyhow.... possible other problem? IAC maybe? anyone run into this problem before?

 

[Patgt501]

could be the IAC, it completely controls the idle speed. does it do it in all gears? Drive, park, neutral...?

 

[Patgt501]

try disconnecting the battery, and stepping on the brake pedal for about 30 seconds, to wipe the computer. that might help.

 

[tracy_s_1993_atx]

My 93ATX did the same thing until I changed the IAC valve. I purchased the IAC valve from Rockauto for around $60.

Problem solved.

Later,
Michael

 

[N3FOL]

My 93ATX did the same thing until I changed the IAC valve. I purchased the IAC valve from Rockauto for around $60.

Problem solved.

38SHO,

I have a similar situation on my 95 ATX two years ago. I replaced my IAC valve which I purchased from Ford Parts Network and I never had the problem since. Good Luck.