Throttle up after ignition?

[Gunbuster]

I've noticed a on a newish Cadilac and BMW that they throttle way up after start and make a hell of a racket. Is this new in "luxury" cars? Something to do with getting the A/C going?

On the caddy I was waiting for the 100 year old woman to put in in gear and shoot off into the side of a building.

 

[Vette73]

My CTS only goes to about the low to mid 1000 rpm range right after starting. Most cars do that so what do you mean by "throttle up"?

 

[CurseTheSky]

I've found a number of different cars rev up when accessories such as the AC are running at startup. They also tend to idle higher (and initially rev up higher) after a substantial temperature drop - for example, if it was 90F the day before, and only 65F later that night. It's probably the ECU going "WTF?!"

 

[LTC8K6]

They should only do that briefly on a cold start. Longer if it's really cold outside and the engine is cold.

 

[DivideBYZero]

Most German cars have a distinct 'cold cycle' mode. They run richer, idle higher and in the case of mine there is even a "Secondary air pump" that forces fresh air into the exhaust to speed up the heating of the Cats, just on the cold cycle.

 

[Safeway]

Or maybe they have a 'bad ass startup' mode intended to impress onlookers.

Err-err-err-ZVOOM-ZVOOM-bluh-bluh-bluh.

Maybe?

No?

Oh.

 

[Eli]

All engines ever made have a "cold start" sequence, whether it's a manual choke or computer controlled.

My Insight starts at 2,000RPM on a cold day, and drops slowly but steadily as it warms up.

 

[Zargon]

All engines ever made have a "cold start" sequence, whether it's a manual choke or computer controlled.

My Insight starts at 2,000RPM on a cold day, and drops slowly but steadily as it warms up.

this.

 

[KentState]

All engines ever made have a "cold start" sequence, whether it's a manual choke or computer controlled.

My Insight starts at 2,000RPM on a cold day, and drops slowly but steadily as it warms up.

Yep.

 

[AMCRambler]

The gto starts up and if it's cold idles around 1100-1000. After a minute or two it drops back to 700rpm idle.

Bluh bluh bluh...lol...tard

 

[Gunbuster]

I have not been in the cars. One is the neighbors and one was in a parking lot. I'm not talking about 1000RPM I'm talking at least 75% WOT.

 

[LTC8K6]

I have not been in the cars. One is the neighbors and one was in a parking lot. I'm not talking about 1000RPM I'm talking at least 75% WOT.

I believe you'd hear it bouncing off the rev limiter if they did that.

They are probably doing it to "warm it up".

 

[Vette73]

I believe you'd hear it bouncing off the rev limiter if they did that.

They are probably doing it to "warm it up".

Don't worry, its a lease.

I had a roommate that did things like that and that was his answer.