code 35
code 35
my car threw SES last night, first time it's ever thrown a code. pulled it this morning, code 35. my paper says 35 is an IAC fault. i've replaced my IAC before, and i just pulled and cleaned some carbon or wqhatever off it, and it looks like new (i know, that doesnt mean anything) but i was just wondering if a code 35 could mean anything else? or is there a way to test the IAC before i go blow another 20-30bucks?
Supreme Member

Joined: Aug 2001
Posts: 2,136
Likes: 2
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
According to https://www.thirdgen.org/newdesign/faq/thirdgen.shtml code 35 is an "Idle speed can not be set to desired RPM". Is your engine idling higher then normal, may be a vacuum leak.
Senior Member
Joined: Oct 2002
Posts: 603
Likes: 0
From: Ohio
Car: 1985 Iroc-z
Engine: 355 sbc
Transmission: 700r4
if you think you solved your problem then you should disconnect the ECM power source for 5 minutes to let the stored codes get cleared. Otherwise they will still remain, even if fixxed.
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