derekhay316
Registered User
I have a slightly rough idle and only when I start my car cold i also have a high idle (goes up to about 2000 rpm) and then when I start moving it'll go back down to normal idle. I've recently replaced the motor mounts, fuel pump and filter, spark plugs and wires. I've heard a lot about the iac going bad? Would this cause the rough idle also? Any input? I'll check my vacuum reading tomorrow. I'm pretty sure its reading pretty normal or slightly off.