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Username Post: 2.2 ecotec surging rpms, lunging        (Topic#348709)
"6th Year" Silver Supporting Member
Posts: 3173
Age: 32
Loc: Rochester, New York
Reg: 02-23-14
12-15-17 07:30 PM - Post#2718069    

Hi guys

I am desperate for some help. My mom’s Saturn ION she got new in 03 (2004) is still a nice car but it idles high. Has for years. Lately, it’s been much higher. The other day, I was more or less K Turning it around in our driveway so she didn’t have to back out and when I put it in park it went up to 3,000+ rpms!!!

I am quite confortable working on modern cars - I did the front wheel drive v6 Honda timing belt in my wife’s van.... but when It comes to diagnostics, the codes actually help, as diagnosing isn’t my strong point. This doesn’t have an engine light on... my GUESS is throttle position sensor.

I really would like to understand this more before I dive into it



Andrew D. Carapella (Drew)

'50 Deluxe 4dr v8 auto


Rochester Street Rods - Est. 1970

CrossMembers Car Club - Hebrews 12:2


Posts: 53
Loc: Vernon, N. J.
Reg: 07-17-08
08-25-18 05:04 PM - Post#2744374    
    In response to drew1987

I had a 2004 Chevy Cavalier and I had issues with the IAC (Intake Air Control Module). It is a small stepper motor mounted in the throttle body. They cost about $100. You will need a Torx drive to replace it. My issue was that it would not idle properly. I suggest trying it first.

Frequent Contributor
Posts: 1765

Loc: Lake George, NY
Reg: 11-11-15
08-26-18 01:32 PM - Post#2744451    
    In response to drew1987

No check engine lite?


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