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Old 11-28-2012, 04:49 PM   #15
michel
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yup, mine does the same thing.
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Old 11-28-2012, 05:39 PM   #16
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Originally Posted by lilfleck View Post
Whew, glad I'm not the only one. Thought I was imagining things.


Just like women.

I hear you on the headlight start up sequence. I love when they dance, but I can't make them dance when I want them. Damnit, even more like a woman.
Lmao so true. The worst part about it is its completely random. I've tried it in park, park with e-brake, drive, reverse, upside down, during a j turn. Nothing.
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Old 11-28-2012, 06:12 PM   #17
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my service reminder ding goes off when i start the car but if i start the car and quickly get out it wont beep until i get back in.
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I cut the tether off. When I get to the pump, I remove the cap and chuck it into the nearest bush, patch of trees, or some sort of wet lands. I pump gas. Then I spend anywhere from 5 to 165 minutes retrieving the cap. I screw it back on and drive away. I'm not letting it dangle against the paint and I don't know any better way.
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Old 11-28-2012, 06:50 PM   #18
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I recently started parking my car outside and I was wondering the same thing. Upon searching I came across this on golfmkv and golfmk6. Makes sense I suppose.

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Originally Posted by lextildeath View Post
To understand this you must first understand why the car is loud in the first place. Your ecu is programmed to start and hold a raised rpm at startup to warm up the cat quickly in order reduce startup emmissions. This is only on pzev cars.

The reason your car is not doing this anymore is because it is too cold out. The ecu won't allow raised rpms on startup below a certain temperature in order to reduce cold start piston wear.
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Originally Posted by tmw2442 View Post
When it is below a certain ambient temp, the ecu does not run the cat warm up cycle to minimize the cold start wear on the engine
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moding is like smoking, we all know its bad, expensive, and hurts your chances with some women...but its addiction
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Old 11-28-2012, 10:25 PM   #19
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I noticed that if I leave mine outside overnight and it's less than 32deg F in the morning, the secondary air pump doesn't run, and i get the normal 800rpm-ish idle immediately on cold start. Or so I thought...

This morning it was 43deg in my garage, and the pump didn't run. Or actually, after 10 seconds it kicked on for maybe half a second (dimmed the headlamps even) and then back off. I can't figure it out. I heard somewhere that under 32deg it won't run the pump in case there's moisture frozen inside it, which would kill it.

Also last week with a semi warm motor the SAI pump came on for 10sec as I was backing out of the garage but wasn't on immediately at startup.
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Old 11-28-2012, 10:51 PM   #20
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Originally Posted by lilfleck View Post
Intermittently, I will start the car (cold outside; NJ winter), and the car will idle at the normal RPM as if it were warm. Normally (even during the summer), our cars will rev to about 1200RPM for a solid 30-40 seconds before slowly leveling out.

Anyone else experience this?
When the temperature is low enough the ecu does not use the map to heat up the cat quickly for emissions. Instead it use the low rpm (warm) idle map to reduce cold start wear on the engine.
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Old 11-29-2012, 09:04 AM   #21
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This also started happening to me recently when the temperature here in NY dropped to below freezing in the morning.

I go to turn the car on and it turns on just fine but doesn't make all the noises and doesn't REV up to 1200 like it normally does. I thought it was something wrong with my car, but I see its happening to a number of people.
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Old 11-29-2012, 09:53 AM   #22
boosted27
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Happens to me! And I usually let the car run in the morning for that 40 seconds until it drops . I usually just figure its been good amount of time when this happens.
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Old 11-29-2012, 10:04 AM   #23
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Happens to me! And I usually let the car run in the morning for that 40 seconds until it drops . I usually just figure its been good amount of time when this happens.
The point in this thread is that the RPMs DONT rise upon cold starts. You crank the car and it stays at idle RPMs.

But yes. Always wait for the RPMs to drop before you take off.
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Old 11-29-2012, 10:19 AM   #24
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Yep.

Excuse the cel...

**Sorry for the large size, not sure how to resize easily**

Tapped and talked.

Last edited by lilfleck; 11-29-2012 at 10:40 AM.
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Old 11-29-2012, 11:29 AM   #25
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So, is it a bug if we all seem to have this happen or an intentional design?
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Old 11-29-2012, 12:03 PM   #26
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So, is it a bug if we all seem to have this happen or an intentional design?
It is intentional...read posts 18 & 20 on page 1 for explanation.
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Old 11-29-2012, 12:13 PM   #27
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Happened to me again this morning. I'm not too worried about it.
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Old 01-07-2015, 12:25 PM   #28
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My car hasn't ran cold start rpm for about a week now and I was very worried because I just installed a unitronic intake hoping that didn't screw with the ecu but after finding other members having this problem I feel much better
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