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Rev limiter on 2002 STS


mywifests

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I had a 1999 Seville STS before and it was totalled, now I have a 2002 and i am noticing the minor changes here and there that aren't big enough to be mentioned in the "Seville Changes Year by Year". I noticed there is a mass flow air sensor now instead of the old little sensor in that plastic cage, and also that there is a rev limiter set at 4000 RPM. I was curious to know if there is a way of removing the rev limiter?

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I'm guessing you're talking about the 4K limit when the car is in Neutral?

In gear, the rev limiter is set for, I believe, 6,500 rpm.

Regards,

Warren

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There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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With the STS it might be 6,800 RPM and as Warren noted, in Neutral, its intentionally limited so that you don't end up with this

Hydrolock_UEC_into_intake_with_pool.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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As I understand, The STS is redlined at 6500 rpm, the SLS at 6300 rpm. Not sure about the firmware rev limiter application. It may well be slightly above the redline limit.

OTOH, I could be completely wrong.

Regards,

Warren

Posted Image

There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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I thought the redline was 6500 for an L37, and 6800 for the LD8, but I found this by the guru

6500 for an L37 and 6000 for an LD8

http://caddyinfo.ipbhost.com/index.php?sho...&hl=redline

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I guess its a good thing I didnt take my LD8 to 6500 RPM :lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The PCM is quite smart and will change the rev limiter based on engine operating condition...

If the engine is cold for example the limiter kicks in at about 5500.

caddy.jpg

Easin' down the highway in a new Cadillac,

I had a fine fox in front, I had three more in the back

ZZTOP, I'm Bad I'm Nationwide

Greg

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My L37... at WOT, shifts at 6500

And something tells me that you confirmed that, going down the road a piece! :lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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My L37... at WOT, shifts at 6500

And something tells me that you confirmed that, going down the road a piece! :lol:

Yep... at least once or twice. :lol::lol::lol:

No doubt :lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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At 6,500 rpm my eyeballs are nowheres near the tach. :yupi3ti::rolleyes: :rolleyes:

Regards,

Warren

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There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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Another cool thing about the computer controls.... you can't over rev it.

Even if you have the shifter in 1st... when you hit 6500.. it shifts to second. :D And then to third. It hits the 123 mph speed limiter in 3rd before it hits 6500... but I would ASSUME it would go ahead and shift to 4th at 6500 also.

Unlike my 2002 Ford Taurus... If you don't shift it in time... it hits the rev limiter and quits pulling.

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I am not a big fan of Ford transmissions, they seem so soft and indecisive.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Why in the world would you want to rev above 4K in neutral anyway?
Good POINT!

SEE, its a good thing there is a REV limiter of 4000 RPM in NEUTRAL,

this owner might have taken it up to 6500 or BEYOND in NEUTRAL and ended up with

THIS:>>>>Hydrolock_UEC_into_intake_with_pool.jpg:lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Why in the world would you want to rev above 4K in neutral anyway?

It's one way to do a "super-cool" burnout. Floor the gas feed in neutral, pull the gear selector into D, and see if you can destroy the crankshaft or transmission or drive axles.

Best done with "Daddy's car" rather than your own daily driver.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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