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PT Cruiser 4 cylinder (non turbo) rev limit

 
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Old 18 Feb 2008, 05:44 pm
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Default PT Cruiser 4 cylinder (non turbo) rev limit

Mechanically speaking:

Why is the PT Cruiser's 2.4l 4 cylinder's rev limit so low in park?

It goes to about 4k and backs off the fuel. Why is this??

I know Mazda's that can rev limit in park at about 6k, also four cylinders.


Just curious!

-DJ
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Old 18 Feb 2008, 06:03 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

So you don't blow the darn thing up when there's no load on the engine. Chrysler's looking out for the longevity of your engine for you.

Seriously, it's not a rumbling V8 that sounds great reving up when sitting at a cruise-in or Dairy Queen. It's a Cruiser.
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Old 18 Feb 2008, 09:40 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

I agree to that!

So those high revving Japanese motors are not looking out for the customer aye?
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Old 18 Feb 2008, 10:17 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

Normal so you don't blow it up.
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Old 18 Feb 2008, 10:21 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

Lets just say that Chrysler built the feature into the cruiser to not let the engine damage itself by over reving during a no-load activity. Most other manufacturers could care less if you damage the engine as they can probably tell if the damage was done by over reving. The computers these days store information that you'd probably be shocked to learn about.

Black boxes capture car-crash data, controversy - 5/12/2005 - EDN

Recording Automotive Crash Event Data
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Old 19 Feb 2008, 07:00 am
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

That stuff is really freakin cool.

Its smart that they would implement something like that into cars.

could help solve a ton of car crashes in the future, such as intentional suicides (such as going as fast as your car can go before hitting the rockwall) That has happened many times here

Alright, sounds good.

-DJ
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Old 19 Feb 2008, 05:58 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

My Chevy Cavalier with a 2.4 Quad 4 would only rev to 4k with the trans in park. So it's not only Chrysler that does this.
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Old 19 Feb 2008, 06:24 pm
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

Cool cool,

I knew it was so you dont blow the engine, im not that silly

Just comparing to other vehicles. Go Chrysler for protecting us!
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Old 27 Mar 2008, 10:44 am
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Default Re: PT Cruiser 4 cylinder (non turbo) rev limit

My 1998 Chevy Cavalier RS 2200 I4 does this too, but the weird thing of it is, it never used to, It would allow me to rev all the way to the actual red line of 6.5k and then back me off, now out of the blue for no apparent reason what so ever it wont go past 4k. This only started about a week ago, before then I could shift into N or P and free revved all the way to 6.5k.
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