Ok everytime I start my car in the morning it idles faster than usual but once I drive it for a sec it goes back to normal and everytime I start it after its warm it idles normal. A neighbor heard my car start in the morning and it was idling fast like it always does on a morning startup alittle over 1000 rpm. He claims to be a mechanic and says I need new plugs and that Im killing my car and insist that I let him change the plugs today for a fee of course. Keep in mind the car only idles fast when the engine is cold on the very first start up and I barely know the guy. Is he just trying to get money out of me? Ive heard of other Z owners saying they have a fast idle in the mornings too. BTW its an 04 with 33k

 

mine is an 07 n it does the same thing, I used to have an 05 and it did the same thing. I think that its because the engine is cold, plus when I get home at night I park n immed. Shut off so it might be the revs where higher upon shut off, but I really think it just cause its cold!!

 

Yeah thats what I was thinking

 

Perfectly normal. All EFI-controlled engines have a high idle during warm-up mode. Even carbureted engines had a system to keep the idle speed up during warm-up.

That's one of the most incompetant diagnoses I have ever heard. Stay away from him.

bill

 

looks like it's time to move... now! If you see him near you car, shoot first, ask questions later.

 

That's the most amazing crap I've heard from a "mechanic" in a long time. bailey bill said it well. You are NOT killing your car... at least not with the idle speed, anyway.

On cold start, my 07 idles *well* north of 1000rpm. The manual says to let the car warm up for 30+ seconds before moving. I do. Usually I let it warm up until the idle speed comes down (on its own) to about 1200rpm, then I back out of the garage and ooze down my driveway and then up the gradual hill in front of my house. By the time I get to the main street corner, the idle speed is pretty normal.

HTH, and stay away from that neighbor.

 

This thread is great!

 

Like all the other wonderful threads around here.

 

My 07 also starts off high on a cold start but many times it's like in the 1750 rpm range which seems high to me. But after a couple secs it drops and I like the sound when it idle's that high so it doesn't bother me .
I also never drive the car till the idle's have dropped to at least a 1000 rpms. I would advise others to do the same to prevent unneccesary wear and damage to the car.