[Z06] Cold starting
Thread Starter
Instructor
Joined: Feb 2012
Posts: 118
Likes: 0
From: san antonio texas
Cold starting
Just recently replaced the spark plugs and wires on my 2003 z06. But when I cold start it the car turns off. It will idle very low and shut off unless I give it some gas till the motor warms up. Is there anything I can do so it won't happen?
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
Dude you're shooting from the hip. Coil packs should (but won't always) throw misfire codes. I honestly don't think it's your coil packs. The first time my truck saw -15F today, it fired and died. If your car dies, does it fire right back up and sort of figure itself out? My Z06 doesn't really do this at or below 0, but I'm more curious to hear about yours.
Thread Starter
Instructor
Joined: Feb 2012
Posts: 118
Likes: 0
From: san antonio texas
It fires right back up again at a really high rpm rate then drops to like 300 rpms and sounds like it wants to shut off untill I give it some gas. Once I get the motor warmed up she runs like a champ but it's a pain in the *** to always have to do this in cold weather
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
Odd. My TBI truck was kind of like that too. Is this a cold start on a warm day too? Or just a cold start now that temperatures are dropping? Have you tried blowing carb cleaner through the IACV? You can run the car with the MAF unplugged to do so.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
I have a hard time believing it's a retarded tune like my truck. Why don't you try cleaning the IACV? It's quick and easy. It may just be that the IACV is caked up in that region because it doesn't normally need to open up so far.
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
on my truck and my grand prix, it's just 2 torx screws iirc. forgot about removing, that's good too. my grand prix had a cruddy plunger and it would stick, causing a no high idle in the cold. sound familiar? 
that's even easier than what I was talking about earlier, which is blowing carb cleaner into the iacv intake. do the iacv removal first, I totally forgot my pontiac pulled the same crap.
that's even easier than what I was talking about earlier, which is blowing carb cleaner into the iacv intake. do the iacv removal first, I totally forgot my pontiac pulled the same crap.
Thread Starter
Instructor
Joined: Feb 2012
Posts: 118
Likes: 0
From: san antonio texas
Ok I took a part the throttle body and cleaned it, and I think I cleaned the IACV also lol not too sure about the IACV but I put everything back together and it still has a low idle but this time didn't take as long to warm up and get to a normal idle
