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Old 11-13-2012, 11:26 AM   #10
Ilovecars800490
Registered User
 
Join Date: Apr 2012
Location: Cambria county PA
Posts: 46
My Ride: 2003 330i sport 5spd
So what you guys are telling me is that i am not allowed to warm up my car on freezing mornings like this morning? IT was roughly 23 degrees F.

What about cold winter days when i need the defroster on?

Hot spots are caused by oil not moving around enough on cold starts. A high idle initially on cold starts fixes this problem.


Quote:
Originally Posted by lcoleman View Post
1800rpms? I think something was wrong with your G35. But yes, a cold idle should be ~300-400 rpms higher than a normal, hot idle.
Every single car i have ever owned a long with all the cars my fiance and my family owned, has always high idled on really cold starts roughly around 1500-1800 depending how cold it is.

2003 G35 6mt starts off at 1800 rpms, immediately drops to 1500 than slowly reaches idle speed when the car is completely warmed up. 189,000 miles no problems and still got 6000 dollar for it.

This bmw and my friends volkswagen jetta doesn't. Starts from1000-1200 rpms and immediately drops to near idle speeds before it even reaches quarter mark on the temp guage. Which leads me to believe that this must be an emission thing and common to german cars.

As long as it's normal i guess

Seems like many things that normally would be considered abnormal are deemed normal on these german cars.
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